Add clanker code

2026-02-17 15:33:05 +01:00
parent ced3cbfe6e
commit 9874f78329
24 changed files with 1884 additions and 31 deletions
--- a/NOTES.md
+++ b/NOTES.md
@@ -0,0 +1,131 @@
+# Pozn<7A>mky k projektu - Evidence Autobazaru
+
+## Spln<6C>n<EFBFBD> zad<61>n<EFBFBD>
+
+### ? Z<>kladn<64> po<70>adavky
+- [x] WPF aplikace
+- [x] Evidence autobazaru
+- [x] Serializace a deserializace (JSON)
+- [x] CRUD operace (Create, Read, Update, Delete)
+- [x] <20>ist<73> a organizovan<61> k<>d
+- [x] Separation of Concerns (SoC)
+
+### ? Model Auto (Vehicle)
+- [x] Zna<6E>ka
+- [x] Model
+- [x] SPZ
+- [x] Rok v<>roby
+- [x] Palivo (Benz<6E>n, Nafta, Elektro, Hybrid, LPG, CNG)
+- [x] N<>jezd v km
+- [x] Barva (s color pickerem)
+- [x] Fotografie (Base64)
+- [x] Cena
+
+### ? Model Vlastn<74>k (Owner)
+- [x] Jm<4A>no
+- [x] P<><50>jmen<65>
+- [x] Adresa
+- [x] Telefon
+- [x] Email
+- [x] Propojen<65> s autem
+
+### ? GUI Features
+- [x] Hlavn<76> okno se seznamem vozidel
+- [x] Zobrazen<65> z<>kladn<64>ch <20>daj<61> (SPZ, zna<6E>ka+model, barva, rok, palivo)
+- [x] Detail vozidla po kliknut<75> (double-click nebo tla<6C><61>tko)
+- [x] Okno pro p<>id<69>n<EFBFBD> vozidla
+- [x] Okno pro <20>pravu vozidla
+- [x] Okno s detaily vozidla
+- [x] V<>b<EFBFBD>r barvy pomoc<6F> Color Dialogu
+- [x] V<>b<EFBFBD>r fotografie
+
+## Technick<63> implementace
+
+### Serializace
+- Pou<6F>it **System.Text.Json** pro JSON serializaci
+- Data ulo<6C>ena v souboru `vehicles.json`
+- Automatick<63> na<6E>ten<65> p<>i startu aplikace
+- Automatick<63> ukl<6B>d<EFBFBD>n<EFBFBD> po ka<6B>d<EFBFBD> zm<7A>n<EFBFBD>
+
+### Validace
+- <20><>seln<6C> vstupy (rok, km, cena) - validace pomoc<6F> `PreviewTextInput`
+- SPZ - automatick<63> p<>evod na velk<6C> p<>smena
+- Obr<62>zky - o<>et<65>en<65> chyb p<>i na<6E><61>t<EFBFBD>n<EFBFBD>/ukl<6B>d<EFBFBD>n<EFBFBD>
+
+### Separation of Concerns
+```
+??? Models
+?   ??? Vehicle.cs         # Datov<6F> model vozidla
+?   ??? Owner.cs           # Datov<6F> model vlastn<74>ka
+??? Data
+?   ??? DataManager.cs     # Spr<70>va dat, serializace
+??? Views
+    ??? MainWindow.xaml/.cs            # Hlavn<76> okno
+    ??? AddVehicleWindow.xaml/.cs      # P<>id<69>n<EFBFBD> vozidla
+    ??? EditVehicleWindow.xaml/.cs     # <20>prava vozidla
+    ??? VehicleDetailWindow.xaml/.cs   # Detail vozidla
+```
+
+## Pou<6F>it<69> technologie
+- .NET 8.0
+- WPF (Windows Presentation Foundation)
+- System.Text.Json (JSON serializace)
+- Windows Forms ColorDialog (v<>b<EFBFBD>r barvy)
+- XAML pro UI design
+
+## Budouc<75> vylep<65>en<65> (pro roz<6F><7A><EFBFBD>en<65>)
+- [ ] Filtrov<6F>n<EFBFBD> a vyhled<65>v<EFBFBD>n<EFBFBD> vozidel
+- [ ] <20>azen<65> podle r<>zn<7A>ch sloupc<70>
+- [ ] Export do PDF/Excel
+- [ ] V<>ce obr<62>zk<7A> na vozidlo
+- [ ] Historie zm<7A>n vozidla
+- [ ] Statistiky (pr<70>m<EFBFBD>rn<72> cena, nejstar<61><72>/nejnov<6F>j<EFBFBD><6A> vozidlo, atd.)
+- [ ] Validace emailu a telefonn<6E>ho <20><>sla
+- [ ] Podpora pro v<>ce autobazar<61>
+- [ ] Cloudov<6F> synchronizace dat
+
+## Zn<5A>m<EFBFBD> limitace
+- Fotografie je ulo<6C>ena jako Base64 p<><70>mo v JSON (m<><6D>e zp<7A>sobit velk<6C> soubory)
+- Validace vstup<75> je pouze na UI <20>rovni
+- <20><>dn<64> autentizace/autorizace
+-?u<>ivatelsk<73> aplikace (bez datab<61>ze)
+
+## Testov<6F>n<EFBFBD>
+Pro testov<6F>n<EFBFBD> aplikace pou<6F>ijte uk<75>zkov<6F> soubor `vehicles.example.json`:
+1. P<>ejmenujte `vehicles.example.json` na `vehicles.json`
+2. Spus<75>te aplikaci
+3. Data se automaticky na<6E>tou
+
+## Klasifika<6B>n<EFBFBD> krit<69>ria
+
+### GUI (User Interface)
+- ? P<>ehledn<64> a intuitivn<76> rozhran<61>
+- ? Responsivn<76> design
+- ? Spr<70>vn<76> pou<6F>it<69> WPF kontrol
+- ? Color picker pro v<>b<EFBFBD>r barvy
+- ? N<>hled fotografi<66>
+
+### <20>istota k<>du
+- ? Jasn<73> pojmenov<6F>n<EFBFBD>
+- ? Odd<64>len<65> t<><74>dy pro r<>zn<7A> <20><>ely
+- ? Try-catch bloky pro o<>et<65>en<65> chyb
+- ? Koment<6E><74>e kde je to vhodn<64>
+- ? Konzistentn<74> styl k<>du
+
+### Funk<6E>nost
+- ? V<>echny CRUD operace funguj<75>
+- ? Serializace a deserializace funguje
+- ? Validace vstup<75>
+- ? O<>et<65>en<65> chyb
+- ? Aplikace nepad<61>
+
+### Separation of Concerns
+- ? Model (Vehicle, Owner)
+- ? Data Logic (DataManager)
+- ? View (XAML)
+- ? View Logic (Code-behind)
+
+## Autorstv<74>
+- **Autor**: Petr (23ib22_petr)
+- **P<>edm<64>t**: PTA25 - Programov<6F>n<EFBFBD> v C#
+- **Term<72>n odevzd<7A>n<EFBFBD>**: 1. 3. 2026
--- a/README.md
+++ b/README.md
@@ -0,0 +1,189 @@
+# Evidence Autobazaru - WPF Aplikace
+
+## Popis projektu
+WPF aplikace pro evidenci vozidel v autobazaru s mo<6D>nost<73> serializace a deserializace dat.
+
+## Funkce aplikace
+
+### ? Implementovan<61> funkce
+- **CRUD operace**
+  - Create (P<>id<69>n<EFBFBD> vozidla)
+  - Read (Zobrazen<65> seznamu a detail<69>)
+  - Update (<28>prava vozidel)
+  - Delete (Maz<61>n<EFBFBD> vozidel)
+
+- **Serializace a deserializace**
+  - Ukl<6B>d<EFBFBD>n<EFBFBD> dat do JSON souboru (`vehicles.json`)
+  - Automatick<63> na<6E><61>t<EFBFBD>n<EFBFBD> dat p<>i spu<70>t<EFBFBD>n<EFBFBD> aplikace
+
+- **Evidence vozidel**
+  - SPZ
+  - Zna<6E>ka (nap<61>. <20>koda, BMW, Audi)
+  - Model
+  - Rok v<>roby
+  - Palivo (Benz<6E>n, Nafta, Elektro, Hybrid, LPG, CNG)
+  - N<>jezd v km
+  - Cena v K<>
+  - Barva (s v<>b<EFBFBD>rem z Color Dialogu)
+  - Fotografie (ulo<6C>en<65> jako Base64)
+
+- **Evidence vlastn<74>k<EFBFBD>**
+  - Jm<4A>no
+  - P<><50>jmen<65>
+  - Adresa
+  - Telefon
+  - Email
+
+### ??? U<>ivatelsk<73> rozhran<61>
+
+#### Hlavn<76> okno (MainWindow)
+- Seznam v<>ech vozidel v p<>ehledn<64> tabulce
+- Zobrazen<65>: SPZ, Zna<6E>ka a Model, Barva, Rok, Palivo
+- Akce:
+  - **P<>idat vozidlo** - otev<65>e okno pro p<>id<69>n<EFBFBD> nov<6F>ho vozidla
+  - **Detail** - zobraz<61> detailn<6C> informace o vybran<61>m vozidle
+  - **Upravit** - umo<6D>n<EFBFBD> editaci vybran<61>ho vozidla
+  - **Smazat** - sma<6D>e vybran<61> vozidlo (s potvrzen<65>m)
+- **Double-click** na vozidlo otev<65>e detail
+
+#### Okno p<>id<69>n<EFBFBD> vozidla (AddVehicleWindow)
+- Formul<75><6C> pro zad<61>n<EFBFBD> v<>ech <20>daj<61> o vozidle
+- V<>b<EFBFBD>r barvy pomoc<6F> Color Dialogu
+- V<>b<EFBFBD>r paliva z ComboBoxu
+- Mo<4D>nost p<>idat fotografii
+- Sekce pro zad<61>n<EFBFBD> informac<61> o vlastn<74>kovi
+- Validace <20><>seln<6C>ch vstup<75>
+
+#### Okno <20>pravy vozidla (EditVehicleWindow)
+- P<>edvypln<6C>n<EFBFBD> <20>daje z vybran<61>ho vozidla
+- N<>hled aktu<74>ln<6C> fotografie
+- Mo<4D>nost zm<7A>ny v<>ech <20>daj<61> v<>etn<74> vlastn<74>ka
+- Stejn<6A> funkce jako v okn<6B> p<>id<69>n<EFBFBD>
+
+#### Okno detailu vozidla (VehicleDetailWindow)
+- Kompletn<74> zobrazen<65> v<>ech informac<61>
+- Zobrazen<65> fotografie vozidla
+- Informace o vlastn<74>kovi
+- Tla<6C><61>tka pro <20>pravu, smaz<61>n<EFBFBD> nebo zav<61>en<65>
+
+## Struktura projektu
+
+### T<><54>dy
+
+#### `Vehicle.cs`
+```csharp
+- Spz: string
+- Znacka: string
+- Model: string
+- Barva: string
+- RokVyroby: int?
+- Palivo: string
+- NajeteKm: int?
+- Cena: decimal?
+- Fotografie: string (Base64)
+- Vlastnik: Owner
+- ZnackaModel: string (computed property)
+```
+
+#### `Owner.cs`
+```csharp
+- Jmeno: string
+- Prijmeni: string
+- Adresa: string
+- Telefon: string
+- Email: string
+- CeleJmeno: string (computed property)
+```
+
+#### `DataManager.cs`
+```csharp
+- AddVehicle(Vehicle)
+- GetAllVehicles(): IEnumerable<Vehicle>
+- RemoveVehicle(Vehicle)
+- Save() - serializace do JSON
+- Load() - deserializace z JSON
+```
+
+## Technologie
+- **.NET 8.0**
+- **WPF (Windows Presentation Foundation)**
+- **System.Text.Json** - pro serializaci/deserializaci
+- **Windows Forms ColorDialog** - pro v<>b<EFBFBD>r barvy
+
+## Principy n<>vrhu
+
+### Separation of Concerns (SoC)
+- **Model** - `Vehicle.cs`, `Owner.cs`
+- **Data Logic** - `DataManager.cs`
+- **View** - XAML soubory (MainWindow, AddVehicleWindow, EditVehicleWindow, VehicleDetailWindow)
+- **View Logic** - Code-behind soubory (.xaml.cs)
+
+### <20>istota k<>du
+- Jasn<73> pojmenov<6F>n<EFBFBD> prom<6F>nn<6E>ch a metod
+- Validace vstup<75> (PreviewTextInput pro <20><>seln<6C> hodnoty)
+- O<>et<65>en<65> chyb (try-catch bloky p<>i pr<70>ci s obr<62>zky)
+- Odd<64>len<65> logiky od prezentace
+
+## Instalace a spu<70>t<EFBFBD>n<EFBFBD>
+
+1. Otev<65>ete projekt v **Visual Studio 2022** nebo nov<6F>j<EFBFBD><6A>m
+2. Ujist<73>te se, <20>e m<>te nainstalovan<61> **.NET 8.0 SDK**
+3. Stiskn<6B>te **F5** nebo klikn<6B>te na **Start** pro spu<70>t<EFBFBD>n<EFBFBD> aplikace
+4. Data se automaticky ukl<6B>daj<61> do souboru `vehicles.json` ve stejn<6A> slo<6C>ce jako aplikace
+
+## Ovl<76>d<EFBFBD>n<EFBFBD> aplikace
+
+### P<>id<69>n<EFBFBD> vozidla
+1. Klikn<6B>te na tla<6C><61>tko **"P<>idat vozidlo"**
+2. Vypl<70>te <20>daje o vozidle
+3. Vyberte barvu pomoc<6F> tla<6C><61>tka **"Vybrat barvu"**
+4. (Voliteln<6C>) Vyberte fotografii
+5. (Voliteln<6C>) Vypl<70>te <20>daje o vlastn<74>kovi
+6. Klikn<6B>te na **"Ulozit"**
+
+### Zobrazen<65> detailu
+- **Double-click** na vozidlo v seznamu, nebo
+- Vyberte vozidlo a klikn<6B>te na **"Detail"**
+
+### <20>prava vozidla
+1. Vyberte vozidlo v seznamu
+2. Klikn<6B>te na **"Upravit"**
+3. Zm<5A><6D>te po<70>adovan<61> <20>daje
+4. Klikn<6B>te na **"Ulozit"**
+
+### Smaz<61>n<EFBFBD> vozidla
+1. Vyberte vozidlo v seznamu
+2. Klikn<6B>te na **"Smazat"**
+3. Potvr<76>te smaz<61>n<EFBFBD>
+
+## Ukl<6B>d<EFBFBD>n<EFBFBD> dat
+
+Data jsou ulo<6C>ena v souboru **`vehicles.json`** ve form<72>tu:
+```json
+[
+  {
+    "Spz": "1A2 3456",
+    "Znacka": "Skoda",
+    "Model": "Octavia",
+    "Barva": "#FF0000",
+    "RokVyroby": 2020,
+    "Palivo": "Benz<6E>n",
+    "NajeteKm": 50000,
+    "Cena": 350000,
+    "Fotografie": "base64_string...",
+    "Vlastnik": {
+      "Jmeno": "Jan",
+      "Prijmeni": "Novak",
+      "Adresa": "Praha 1",
+      "Telefon": "+420123456789",
+      "Email": "jan.novak@email.cz"
+    }
+  }
+]
+```
+
+## Autor
+Vytvo<EFBFBD>eno pro p<>edm<64>t PTA25 - Programov<6F>n<EFBFBD> v C#
+
+## Term<72>n odevzd<7A>n<EFBFBD>
+**1. 3. 2026**
--- a/dealer/DataManager.cs
+++ b/dealer/DataManager.cs
@@ -9,7 +9,10 @@ namespace dealer
    public class DataManager
    {
        private List<Vehicle> vehicles = new List<Vehicle>();
+        private List<Owner> owners = new List<Owner>();
+        private List<Image> images = new List<Image>();

+        // Vehicle CRUD
        public void AddVehicle(Vehicle vehicle)
        {
            vehicles.Add(vehicle);
@@ -25,23 +28,260 @@ namespace dealer
            vehicles.Remove(vehicle);
        }

+        // Owner CRUD
+        public void AddOwner(Owner owner)
+        {
+            owners.Add(owner);
+        }
+
+        public IEnumerable<Owner> GetAllOwners()
+        {
+            return owners;
+        }
+
+        public Owner? GetOwnerById(Guid? id)
+        {
+            if (id == null) return null;
+            return owners.FirstOrDefault(o => o.Id == id);
+        }
+
+        public void RemoveOwner(Owner owner)
+        {
+            // Remove owner reference from all vehicles
+            foreach (var vehicle in vehicles.Where(v => v.VlastnikId == owner.Id))
+            {
+                vehicle.VlastnikId = null;
+                vehicle.Vlastnik = null;
+            }
+            owners.Remove(owner);
+        }
+
+        public IEnumerable<Owner> SearchOwners(string searchText)
+        {
+            if (string.IsNullOrWhiteSpace(searchText))
+                return owners;
+
+            searchText = searchText.ToLower();
+            return owners.Where(o =>
+                (o.Jmeno?.ToLower().Contains(searchText) ?? false) ||
+                (o.Prijmeni?.ToLower().Contains(searchText) ?? false) ||
+                (o.Email?.ToLower().Contains(searchText) ?? false) ||
+                (o.Telefon?.Contains(searchText) ?? false) ||
+                (o.CeleJmeno?.ToLower().Contains(searchText) ?? false));
+        }
+
+        // Image CRUD
+        public void AddImage(Image image)
+        {
+            images.Add(image);
+        }
+
+        public IEnumerable<Image> GetAllImages()
+        {
+            return images;
+        }
+
+        public Image? GetImageById(Guid? id)
+        {
+            if (id == null) return null;
+            return images.FirstOrDefault(i => i.Id == id);
+        }
+
+        public void RemoveImage(Image image)
+        {
+            // Remove image reference from all vehicles
+            foreach (var vehicle in vehicles.Where(v => v.FotografieId == image.Id))
+            {
+                vehicle.FotografieId = null;
+                vehicle.Fotografie = null;
+            }
+            images.Remove(image);
+        }
+
+        // Link owners and images to vehicles after loading
+        private void LinkRelationsToVehicles()
+        {
+            foreach (var vehicle in vehicles)
+            {
+                if (vehicle.VlastnikId.HasValue)
+                {
+                    vehicle.Vlastnik = GetOwnerById(vehicle.VlastnikId);
+                }
+                if (vehicle.FotografieId.HasValue)
+                {
+                    vehicle.Fotografie = GetImageById(vehicle.FotografieId);
+                }
+            }
+        }
+
        public void Save()
        {
-            // Implementace ukládání dat do souboru - JSON
-            var json = System.Text.Json.JsonSerializer.Serialize(vehicles);
-            System.IO.File.WriteAllText("vehicles.json", json);
+            // Save vehicles
+            var vehiclesJson = System.Text.Json.JsonSerializer.Serialize(vehicles);
+            System.IO.File.WriteAllText("vehicles.json", vehiclesJson);
+
+            // Save owners
+            var ownersJson = System.Text.Json.JsonSerializer.Serialize(owners);
+            System.IO.File.WriteAllText("owners.json", ownersJson);
+
+            // Save images
+            var imagesJson = System.Text.Json.JsonSerializer.Serialize(images);
+            System.IO.File.WriteAllText("images.json", imagesJson);
        }

        public void Load()
        {
-            string path = "vehicles.json";
-
-            // Implementace načítání dat ze souboru - JSON
-            if (System.IO.File.Exists(path))
+            // Load owners first
+            string ownersPath = "owners.json";
+            if (System.IO.File.Exists(ownersPath))
            {
-                var json = System.IO.File.ReadAllText(path);
+                var json = System.IO.File.ReadAllText(ownersPath);
+                owners = System.Text.Json.JsonSerializer.Deserialize<List<Owner>>(json) ?? new List<Owner>();
+            }
+
+            // Load images
+            string imagesPath = "images.json";
+            if (System.IO.File.Exists(imagesPath))
+            {
+                var json = System.IO.File.ReadAllText(imagesPath);
+                images = System.Text.Json.JsonSerializer.Deserialize<List<Image>>(json) ?? new List<Image>();
+            }
+
+            // Load vehicles
+            string vehiclesPath = "vehicles.json";
+            if (System.IO.File.Exists(vehiclesPath))
+            {
+                var json = System.IO.File.ReadAllText(vehiclesPath);
                vehicles = System.Text.Json.JsonSerializer.Deserialize<List<Vehicle>>(json) ?? new List<Vehicle>();
            }
+
+            // Link relations to vehicles
+            LinkRelationsToVehicles();
+
+            // If no data exists, seed with sample data
+            if (!vehicles.Any() && !owners.Any())
+            {
+                SeedData();
+            }
+        }
+
+        private void SeedData()
+        {
+            // Seed owners
+            var owner1 = new Owner
+            {
+                Id = Guid.NewGuid(),
+                Jmeno = "Jan",
+                Prijmeni = "Novak",
+                Adresa = "Praha 1, Vaclavske namesti 1",
+                Telefon = "+420 123 456 789",
+                Email = "jan.novak@email.cz"
+            };
+
+            var owner2 = new Owner
+            {
+                Id = Guid.NewGuid(),
+                Jmeno = "Marie",
+                Prijmeni = "Svobodova",
+                Adresa = "Brno, Husova 23",
+                Telefon = "+420 987 654 321",
+                Email = "marie.svobodova@email.cz"
+            };
+
+            var owner3 = new Owner
+            {
+                Id = Guid.NewGuid(),
+                Jmeno = "Petr",
+                Prijmeni = "Dvorak",
+                Adresa = "Ostrava, Hlavni 45",
+                Telefon = "+420 777 888 999",
+                Email = "petr.dvorak@email.cz"
+            };
+
+            owners.Add(owner1);
+            owners.Add(owner2);
+            owners.Add(owner3);
+
+            // Seed images (1x1 pixel placeholder images in different colors)
+            var image1 = new Image
+            {
+                Id = Guid.NewGuid(),
+                Data = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPj/HwADBwIAMCbHYQAAAABJRU5ErkJggg==",
+                FileName = "skoda_octavia.png",
+                ContentType = "image/png"
+            };
+
+            var image2 = new Image
+            {
+                Id = Guid.NewGuid(),
+                Data = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M/wHwAEBgIApD5fRAAAAABJRU5ErkJggg==",
+                FileName = "bmw_x5.png",
+                ContentType = "image/png"
+            };
+
+            var image3 = new Image
+            {
+                Id = Guid.NewGuid(),
+                Data = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8/5+hHgAHggJ/PchI7wAAAABJRU5ErkJggg==",
+                FileName = "tesla_model3.png",
+                ContentType = "image/png"
+            };
+
+            images.Add(image1);
+            images.Add(image2);
+            images.Add(image3);
+
+            // Seed vehicles
+            vehicles.Add(new Vehicle
+            {
+                Spz = "1A2 3456",
+                Znacka = "Skoda",
+                Model = "Octavia",
+                Barva = "#0055AA",
+                RokVyroby = 2020,
+                Palivo = "Benzín",
+                NajeteKm = 45000,
+                Cena = 350000,
+                VlastnikId = owner1.Id,
+                Vlastnik = owner1,
+                FotografieId = image1.Id,
+                Fotografie = image1
+            });
+
+            vehicles.Add(new Vehicle
+            {
+                Spz = "7B8 9012",
+                Znacka = "BMW",
+                Model = "X5",
+                Barva = "#000000",
+                RokVyroby = 2019,
+                Palivo = "Nafta",
+                NajeteKm = 78000,
+                Cena = 850000,
+                VlastnikId = owner2.Id,
+                Vlastnik = owner2,
+                FotografieId = image2.Id,
+                Fotografie = image2
+            });
+
+            vehicles.Add(new Vehicle
+            {
+                Spz = "3C4 5678",
+                Znacka = "Tesla",
+                Model = "Model 3",
+                Barva = "#FFFFFF",
+                RokVyroby = 2022,
+                Palivo = "Elektro",
+                NajeteKm = 15000,
+                Cena = 1200000,
+                VlastnikId = owner3.Id,
+                Vlastnik = owner3,
+                FotografieId = image3.Id,
+                Fotografie = image3
+            });
+
+            // Save the seeded data
+            Save();
        }
    }
 }
--- a/dealer/Image.cs
+++ b/dealer/Image.cs
@@ -0,0 +1,12 @@
+using System;
+
+namespace dealer
+{
+    public class Image
+    {
+        public Guid Id { get; set; } = Guid.NewGuid();
+        public string? Data { get; set; } // Base64 encoded image data or file path
+        public string? FileName { get; set; }
+        public string? ContentType { get; set; }
+    }
+}
--- a/dealer/Owner.cs
+++ b/dealer/Owner.cs
@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace dealer
+{
+    public class Owner
+    {
+        public Guid Id { get; set; } = Guid.NewGuid();
+        public string? Jmeno { get; set; }
+        public string? Prijmeni { get; set; }
+        public string? Adresa { get; set; }
+        public string? Telefon { get; set; }
+        public string? Email { get; set; }
+
+        public string CeleJmeno => $"{Jmeno} {Prijmeni}".Trim();
+        
+        public string DisplayText => string.IsNullOrEmpty(CeleJmeno) 
+            ? Email ?? Telefon ?? "Neznamy vlastnik" 
+            : CeleJmeno;
+
+        public override string ToString() => DisplayText;
+    }
+}
--- a/dealer/Vehicle.cs
+++ b/dealer/Vehicle.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Text.Json.Serialization;
 using System.Threading.Tasks;

 namespace dealer
@@ -9,11 +10,26 @@ namespace dealer
    public class Vehicle
    {
        public string? Spz { get; set; }
+        public string? Znacka { get; set; }
        public string? Model { get; set; }
        public string? Barva { get; set; }
        public int? RokVyroby { get; set; }
+        public string? Palivo { get; set; }
        public int? NajeteKm { get; set; }
        public decimal? Cena { get; set; }
-        public string? Fotografie { get; set; }
+        
+        public Guid? FotografieId { get; set; }
+        
+        [JsonIgnore]
+        public Image? Fotografie { get; set; }
+        
+        public Guid? VlastnikId { get; set; }
+        
+        [JsonIgnore]
+        public Owner? Vlastnik { get; set; }
+
+        public string ZnackaModel => !string.IsNullOrEmpty(Znacka) && !string.IsNullOrEmpty(Model) 
+            ? $"{Znacka} {Model}" 
+            : Model ?? Znacka ?? "Nezadano";
    }
 }
--- a/dealer/windows/AddOwnerWindow.xaml
+++ b/dealer/windows/AddOwnerWindow.xaml
@@ -0,0 +1,84 @@
+<Window x:Class="dealer.AddOwnerWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:local="clr-namespace:dealer"
+    mc:Ignorable="d"
+    Title="Pridat vlastnika" Height="400" Width="400"
+    WindowStartupLocation="CenterOwner"
+    ResizeMode="NoResize">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <ScrollViewer Grid.Row="0" VerticalScrollBarVisibility="Auto">
+            <StackPanel Margin="20">
+                <TextBlock Text="Novy vlastnik"
+                    FontSize="20"
+                    FontWeight="Bold"
+                    Margin="0,0,0,20"
+                    HorizontalAlignment="Center" />
+
+                <TextBlock Text="Jmeno:" FontSize="14" Margin="0,5" />
+                <TextBox Name="JmenoTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Prijmeni:" FontSize="14" Margin="0,5" />
+                <TextBox Name="PrijmeniTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Telefon:" FontSize="14" Margin="0,5" />
+                <TextBox Name="TelefonTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Email:" FontSize="14" Margin="0,5" />
+                <TextBox Name="EmailTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Adresa:" FontSize="14" Margin="0,5" />
+                <TextBox Name="AdresaTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    TextWrapping="Wrap"
+                    AcceptsReturn="True"
+                    Height="60"
+                    Margin="0,0,0,10" />
+            </StackPanel>
+        </ScrollViewer>
+
+        <Border Grid.Row="1"
+            BorderBrush="LightGray"
+            BorderThickness="0,1,0,0"
+            Background="WhiteSmoke">
+            <StackPanel Orientation="Horizontal"
+                HorizontalAlignment="Center"
+                Margin="0,15">
+                <Button Name="SaveButton"
+                    Content="Ulozit"
+                    Width="100"
+                    Height="35"
+                    Margin="5"
+                    FontSize="14"
+                    Click="SaveButton_Click" />
+                <Button Name="CancelButton"
+                    Content="Zrusit"
+                    Width="100"
+                    Height="35"
+                    Margin="5"
+                    FontSize="14"
+                    Click="CancelButton_Click" />
+            </StackPanel>
+        </Border>
+    </Grid>
+</Window>
--- a/dealer/windows/AddOwnerWindow.xaml.cs
+++ b/dealer/windows/AddOwnerWindow.xaml.cs
@@ -0,0 +1,49 @@
+using System.Windows;
+
+namespace dealer
+{
+    public partial class AddOwnerWindow : Window
+    {
+        private DataManager dataManager;
+
+        /// <summary>
+        /// Gets the owner that was created when the user saved, or null if cancelled.
+        /// </summary>
+        public Owner? CreatedOwner { get; private set; }
+
+        public AddOwnerWindow(DataManager dataManager)
+        {
+            InitializeComponent();
+            this.dataManager = dataManager;
+        }
+
+        private void SaveButton_Click(object sender, RoutedEventArgs e)
+        {
+            if (string.IsNullOrWhiteSpace(JmenoTextBox.Text) && string.IsNullOrWhiteSpace(PrijmeniTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte alespon jmeno nebo prijmeni.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            var owner = new Owner
+            {
+                Jmeno = JmenoTextBox.Text.Trim(),
+                Prijmeni = PrijmeniTextBox.Text.Trim(),
+                Telefon = TelefonTextBox.Text.Trim(),
+                Email = EmailTextBox.Text.Trim(),
+                Adresa = AdresaTextBox.Text.Trim()
+            };
+
+            dataManager.AddOwner(owner);
+            dataManager.Save();
+            CreatedOwner = owner;
+            this.DialogResult = true;
+            this.Close();
+        }
+
+        private void CancelButton_Click(object sender, RoutedEventArgs e)
+        {
+            this.Close();
+        }
+    }
+}
--- a/dealer/windows/AddVehicleWindow.xaml
+++ b/dealer/windows/AddVehicleWindow.xaml
@@ -5,7 +5,7 @@
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:dealer"
    mc:Ignorable="d"
-    Title="Pridat vozidlo" Height="550" Width="450"
+    Title="Pridat vozidlo" Height="700" Width="500"
    WindowStartupLocation="CenterOwner"
    ResizeMode="NoResize">
    <Grid>
@@ -30,6 +30,12 @@
                    CharacterCasing="Upper"
                    Margin="0,0,0,10" />

+                <TextBlock Text="Znacka:" FontSize="14" Margin="0,5" />
+                <TextBox Name="ZnackaTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
                <TextBlock Text="Model:" FontSize="14" Margin="0,5" />
                <TextBox Name="ModelTextBox"
                    FontSize="14"
@@ -66,6 +72,19 @@
                    PreviewTextInput="NumericOnly_PreviewTextInput"
                    Margin="0,0,0,10" />

+                <TextBlock Text="Palivo:" FontSize="14" Margin="0,5" />
+                <ComboBox Name="PalivoComboBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10">
+                    <ComboBoxItem Content="Benzin" />
+                    <ComboBoxItem Content="Nafta" />
+                    <ComboBoxItem Content="Elektro" />
+                    <ComboBoxItem Content="Hybrid" />
+                    <ComboBoxItem Content="LPG" />
+                    <ComboBoxItem Content="CNG" />
+                </ComboBox>
+
                <TextBlock Text="Najete km:" FontSize="14" Margin="0,5" />
                <TextBox Name="MileageTextBox"
                    FontSize="14"
@@ -94,6 +113,44 @@
                    Foreground="Gray"
                    Margin="0,0,0,10"
                    TextWrapping="Wrap" />
+
+                <Separator Margin="0,15,0,15" />
+
+                <TextBlock Text="Vlastnik" FontSize="16" FontWeight="Bold" Margin="0,0,0,10" />
+
+                <TextBlock Text="Vybrat vlastnika:" FontSize="14" Margin="0,5" />
+                <Grid Margin="0,0,0,10">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="Auto" />
+                    </Grid.ColumnDefinitions>
+                    <ComboBox Name="OwnerComboBox"
+                        FontSize="14"
+                        Padding="5"
+                        IsEditable="True"
+                        IsTextSearchEnabled="False"
+                        StaysOpenOnEdit="True"
+                        DisplayMemberPath="DisplayText"
+                        TextBoxBase.TextChanged="OwnerComboBox_TextChanged"
+                        SelectionChanged="OwnerComboBox_SelectionChanged" />
+                    <Button Name="AddNewOwnerButton"
+                        Grid.Column="1"
+                        Content="+"
+                        Width="35"
+                        Height="35"
+                        Margin="5,0,0,0"
+                        FontSize="18"
+                        FontWeight="Bold"
+                        ToolTip="Pridat noveho vlastnika"
+                        Click="AddNewOwnerButton_Click" />
+                </Grid>
+
+                <TextBlock Name="SelectedOwnerInfo"
+                    Text=""
+                    FontStyle="Italic"
+                    Foreground="Gray"
+                    TextWrapping="Wrap"
+                    Margin="0,0,0,10" />
            </StackPanel>
        </ScrollViewer>

--- a/dealer/windows/AddVehicleWindow.xaml.cs
+++ b/dealer/windows/AddVehicleWindow.xaml.cs
@@ -1,6 +1,8 @@
 using Microsoft.Win32;
 using System.IO;
+using System.Linq;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
 using WinForms = System.Windows.Forms;
@@ -13,12 +15,76 @@ namespace dealer
        public System.Windows.Media.Color SelectedColor { get; private set; } = Colors.White;

        private DataManager dataManager;
+        private Owner? selectedOwner;
+        private bool isUpdatingOwnerComboBox = false;

        public AddVehicleWindow(DataManager dataManager)
        {
            InitializeComponent();

            this.dataManager = dataManager;
+            LoadOwners();
+        }
+
+        private void LoadOwners()
+        {
+            OwnerComboBox.ItemsSource = dataManager.GetAllOwners().ToList();
+        }
+
+        private void OwnerComboBox_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            if (isUpdatingOwnerComboBox) return;
+
+            var comboBox = sender as System.Windows.Controls.ComboBox;
+            if (comboBox == null) return;
+
+            string searchText = comboBox.Text;
+            var filteredOwners = dataManager.SearchOwners(searchText).ToList();
+            
+            isUpdatingOwnerComboBox = true;
+            comboBox.ItemsSource = filteredOwners;
+            comboBox.IsDropDownOpen = true;
+            isUpdatingOwnerComboBox = false;
+        }
+
+        private void OwnerComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            selectedOwner = OwnerComboBox.SelectedItem as Owner;
+            UpdateSelectedOwnerInfo();
+        }
+
+        private void UpdateSelectedOwnerInfo()
+        {
+            if (selectedOwner != null)
+            {
+                var info = selectedOwner.CeleJmeno;
+                if (!string.IsNullOrEmpty(selectedOwner.Telefon))
+                    info += $"\nTel: {selectedOwner.Telefon}";
+                if (!string.IsNullOrEmpty(selectedOwner.Email))
+                    info += $"\nEmail: {selectedOwner.Email}";
+                if (!string.IsNullOrEmpty(selectedOwner.Adresa))
+                    info += $"\nAdresa: {selectedOwner.Adresa}";
+                SelectedOwnerInfo.Text = info;
+            }
+            else
+            {
+                SelectedOwnerInfo.Text = "";
+            }
+        }
+
+        private void AddNewOwnerButton_Click(object sender, RoutedEventArgs e)
+        {
+            var addOwnerWindow = new AddOwnerWindow(dataManager);
+            addOwnerWindow.Owner = this;
+            if (addOwnerWindow.ShowDialog() == true && addOwnerWindow.CreatedOwner != null)
+            {
+                LoadOwners();
+                OwnerComboBox.SelectedItem = dataManager.GetAllOwners().FirstOrDefault(o => o.Id == addOwnerWindow.CreatedOwner.Id);
+            }
+            else
+            {
+                LoadOwners();
+            }
        }

        private void SelectPhotoButton_Click(object sender, RoutedEventArgs e)
@@ -74,22 +140,75 @@ namespace dealer

        private void SaveButton_Click(object sender, RoutedEventArgs e)
        {
-            string? base64Image = null;
+            if (string.IsNullOrWhiteSpace(SpzTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte SPZ.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(ZnackaTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte znacku.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(ModelTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte model.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(YearTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte rok vyroby.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (PalivoComboBox.SelectedItem == null)
+            {
+                System.Windows.MessageBox.Show("Vyberte palivo.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (!string.IsNullOrWhiteSpace(MileageTextBox.Text) && (!int.TryParse(MileageTextBox.Text, out int mileageVal) || mileageVal < 0))
+            {
+                System.Windows.MessageBox.Show("Najete km musi byt nezaporne cele cislo.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (!string.IsNullOrWhiteSpace(PriceTextBox.Text) && (!decimal.TryParse(PriceTextBox.Text, out decimal priceVal) || priceVal < 0))
+            {
+                System.Windows.MessageBox.Show("Cena musi byt nezaporne cislo.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            Image? image = null;
            if (!string.IsNullOrEmpty(SelectedPhotoPath) && File.Exists(SelectedPhotoPath))
            {
                byte[] imageBytes = File.ReadAllBytes(SelectedPhotoPath);
-                base64Image = Convert.ToBase64String(imageBytes);
+                image = new Image
+                {
+                    Data = Convert.ToBase64String(imageBytes),
+                    FileName = System.IO.Path.GetFileName(SelectedPhotoPath),
+                    ContentType = GetContentType(SelectedPhotoPath)
+                };
+                this.dataManager.AddImage(image);
            }

            var vehicle = new Vehicle
            {
                Spz = SpzTextBox.Text,
+                Znacka = ZnackaTextBox.Text,
                Model = ModelTextBox.Text,
                Barva = $"#{SelectedColor.R:X2}{SelectedColor.G:X2}{SelectedColor.B:X2}",
                RokVyroby = int.TryParse(YearTextBox.Text, out int rok) ? rok : (int?)null,
+                Palivo = (PalivoComboBox.SelectedItem as System.Windows.Controls.ComboBoxItem)?.Content?.ToString(),
                NajeteKm = int.TryParse(MileageTextBox.Text, out int km) ? km : (int?)null,
                Cena = decimal.TryParse(PriceTextBox.Text, out decimal cena) ? cena : (decimal?)null,
-                Fotografie = base64Image
+                FotografieId = image?.Id,
+                Fotografie = image,
+                VlastnikId = selectedOwner?.Id,
+                Vlastnik = selectedOwner
            };

            this.dataManager.AddVehicle(vehicle);
@@ -102,5 +221,19 @@ namespace dealer
        {
            this.Close();
        }
+
+        private static string GetContentType(string filePath)
+        {
+            var extension = System.IO.Path.GetExtension(filePath)?.ToLowerInvariant();
+            return extension switch
+            {
+                ".jpg" or ".jpeg" => "image/jpeg",
+                ".png" => "image/png",
+                ".gif" => "image/gif",
+                ".bmp" => "image/bmp",
+                ".webp" => "image/webp",
+                _ => "application/octet-stream"
+            };
+        }
    }
 }
--- a/dealer/windows/EditOwnerWindow.xaml
+++ b/dealer/windows/EditOwnerWindow.xaml
@@ -0,0 +1,84 @@
+<Window x:Class="dealer.EditOwnerWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:local="clr-namespace:dealer"
+    mc:Ignorable="d"
+    Title="Upravit vlastnika" Height="400" Width="400"
+    WindowStartupLocation="CenterOwner"
+    ResizeMode="NoResize">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <ScrollViewer Grid.Row="0" VerticalScrollBarVisibility="Auto">
+            <StackPanel Margin="20">
+            <TextBlock Text="Upravit vlastnika"
+                FontSize="20"
+                FontWeight="Bold"
+                Margin="0,0,0,20"
+                HorizontalAlignment="Center" />
+
+            <TextBlock Text="Jmeno:" FontSize="14" Margin="0,5" />
+            <TextBox Name="JmenoTextBox"
+                FontSize="14"
+                Padding="5"
+                Margin="0,0,0,10" />
+
+            <TextBlock Text="Prijmeni:" FontSize="14" Margin="0,5" />
+            <TextBox Name="PrijmeniTextBox"
+                FontSize="14"
+                Padding="5"
+                Margin="0,0,0,10" />
+
+            <TextBlock Text="Telefon:" FontSize="14" Margin="0,5" />
+            <TextBox Name="TelefonTextBox"
+                FontSize="14"
+                Padding="5"
+                Margin="0,0,0,10" />
+
+            <TextBlock Text="Email:" FontSize="14" Margin="0,5" />
+            <TextBox Name="EmailTextBox"
+                FontSize="14"
+                Padding="5"
+                Margin="0,0,0,10" />
+
+            <TextBlock Text="Adresa:" FontSize="14" Margin="0,5" />
+            <TextBox Name="AdresaTextBox"
+                FontSize="14"
+                Padding="5"
+                TextWrapping="Wrap"
+                AcceptsReturn="True"
+                Height="60"
+                Margin="0,0,0,10" />
+            </StackPanel>
+        </ScrollViewer>
+
+        <Border Grid.Row="1"
+            BorderBrush="LightGray"
+            BorderThickness="0,1,0,0"
+            Background="WhiteSmoke">
+            <StackPanel Orientation="Horizontal"
+                HorizontalAlignment="Center"
+                Margin="0,15">
+                <Button Name="SaveButton"
+                    Content="Ulozit"
+                    Width="100"
+                    Height="35"
+                    Margin="5"
+                    FontSize="14"
+                    Click="SaveButton_Click" />
+                <Button Name="CancelButton"
+                    Content="Zrusit"
+                    Width="100"
+                    Height="35"
+                    Margin="5"
+                    FontSize="14"
+                    Click="CancelButton_Click" />
+            </StackPanel>
+        </Border>
+    </Grid>
+</Window>
--- a/dealer/windows/EditOwnerWindow.xaml.cs
+++ b/dealer/windows/EditOwnerWindow.xaml.cs
@@ -0,0 +1,74 @@
+using System.Windows;
+
+namespace dealer
+{
+    public partial class EditOwnerWindow : Window
+    {
+        private Owner owner;
+        private DataManager dataManager;
+
+        public EditOwnerWindow(Owner owner, DataManager dataManager)
+        {
+            InitializeComponent();
+            this.owner = owner;
+            this.dataManager = dataManager;
+            LoadOwnerData();
+        }
+
+        private void LoadOwnerData()
+        {
+            JmenoTextBox.Text = owner.Jmeno ?? "";
+            PrijmeniTextBox.Text = owner.Prijmeni ?? "";
+            TelefonTextBox.Text = owner.Telefon ?? "";
+            EmailTextBox.Text = owner.Email ?? "";
+            AdresaTextBox.Text = owner.Adresa ?? "";
+        }
+
+        private void SaveButton_Click(object sender, RoutedEventArgs e)
+        {
+            if (string.IsNullOrWhiteSpace(JmenoTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte jmeno.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(PrijmeniTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte prijmeni.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(TelefonTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte telefon.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(EmailTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte email.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(AdresaTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte adresu.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            owner.Jmeno = JmenoTextBox.Text.Trim();
+            owner.Prijmeni = PrijmeniTextBox.Text.Trim();
+            owner.Telefon = TelefonTextBox.Text.Trim();
+            owner.Email = EmailTextBox.Text.Trim();
+            owner.Adresa = AdresaTextBox.Text.Trim();
+
+            dataManager.Save();
+            this.Close();
+        }
+
+        private void CancelButton_Click(object sender, RoutedEventArgs e)
+        {
+            this.Close();
+        }
+    }
+}
--- a/dealer/windows/EditVehicleWindow.xaml
+++ b/dealer/windows/EditVehicleWindow.xaml
@@ -5,7 +5,7 @@
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:dealer"
    mc:Ignorable="d"
-    Title="Upravit vozidlo" Height="600" Width="450"
+    Title="Upravit vozidlo" Height="700" Width="500"
    WindowStartupLocation="CenterOwner"
    ResizeMode="NoResize">
    <Grid>
@@ -30,6 +30,12 @@
                    CharacterCasing="Upper"
                    Margin="0,0,0,10" />

+                <TextBlock Text="Znacka:" FontSize="14" Margin="0,5" />
+                <TextBox Name="ZnackaTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
                <TextBlock Text="Model:" FontSize="14" Margin="0,5" />
                <TextBox Name="ModelTextBox"
                    FontSize="14"
@@ -66,6 +72,19 @@
                    PreviewTextInput="NumericOnly_PreviewTextInput"
                    Margin="0,0,0,10" />

+                <TextBlock Text="Palivo:" FontSize="14" Margin="0,5" />
+                <ComboBox Name="PalivoComboBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10">
+                    <ComboBoxItem Content="Benzin" />
+                    <ComboBoxItem Content="Nafta" />
+                    <ComboBoxItem Content="Elektro" />
+                    <ComboBoxItem Content="Hybrid" />
+                    <ComboBoxItem Content="LPG" />
+                    <ComboBoxItem Content="CNG" />
+                </ComboBox>
+
                <TextBlock Text="Najete km:" FontSize="14" Margin="0,5" />
                <TextBox Name="MileageTextBox"
                    FontSize="14"
@@ -100,6 +119,44 @@
                    Foreground="Gray"
                    Margin="0,0,0,10"
                    TextWrapping="Wrap" />
+
+                <Separator Margin="0,15,0,15" />
+
+                <TextBlock Text="Vlastnik" FontSize="16" FontWeight="Bold" Margin="0,0,0,10" />
+
+                <TextBlock Text="Vybrat vlastnika:" FontSize="14" Margin="0,5" />
+                <Grid Margin="0,0,0,10">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="Auto" />
+                    </Grid.ColumnDefinitions>
+                    <ComboBox Name="OwnerComboBox"
+                        FontSize="14"
+                        Padding="5"
+                        IsEditable="True"
+                        IsTextSearchEnabled="False"
+                        StaysOpenOnEdit="True"
+                        DisplayMemberPath="DisplayText"
+                        TextBoxBase.TextChanged="OwnerComboBox_TextChanged"
+                        SelectionChanged="OwnerComboBox_SelectionChanged" />
+                    <Button Name="AddNewOwnerButton"
+                        Grid.Column="1"
+                        Content="+"
+                        Width="35"
+                        Height="35"
+                        Margin="5,0,0,0"
+                        FontSize="18"
+                        FontWeight="Bold"
+                        ToolTip="Pridat noveho vlastnika"
+                        Click="AddNewOwnerButton_Click" />
+                </Grid>
+
+                <TextBlock Name="SelectedOwnerInfo"
+                    Text=""
+                    FontStyle="Italic"
+                    Foreground="Gray"
+                    TextWrapping="Wrap"
+                    Margin="0,0,0,10" />
            </StackPanel>
        </ScrollViewer>

--- a/dealer/windows/EditVehicleWindow.xaml.cs
+++ b/dealer/windows/EditVehicleWindow.xaml.cs
@@ -1,7 +1,9 @@
 using Microsoft.Win32;
 using System;
 using System.IO;
+using System.Linq;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
@@ -18,6 +20,8 @@ namespace dealer
        private DataManager dataManager;
        private Vehicle vehicle;
        private bool photoChanged = false;
+        private Owner? selectedOwner;
+        private bool isUpdatingOwnerComboBox = false;

        public EditVehicleWindow(Vehicle vehicle, DataManager dataManager)
        {
@@ -26,14 +30,72 @@ namespace dealer
            this.dataManager = dataManager;
            this.vehicle = vehicle;

+            LoadOwners();
            LoadVehicleData();
        }

+        private void LoadOwners()
+        {
+            OwnerComboBox.ItemsSource = dataManager.GetAllOwners().ToList();
+        }
+
+        private void OwnerComboBox_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            if (isUpdatingOwnerComboBox) return;
+
+            var comboBox = sender as System.Windows.Controls.ComboBox;
+            if (comboBox == null) return;
+
+            string searchText = comboBox.Text;
+            var filteredOwners = dataManager.SearchOwners(searchText).ToList();
+            
+            isUpdatingOwnerComboBox = true;
+            comboBox.ItemsSource = filteredOwners;
+            comboBox.IsDropDownOpen = true;
+            isUpdatingOwnerComboBox = false;
+        }
+
+        private void OwnerComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            selectedOwner = OwnerComboBox.SelectedItem as Owner;
+            UpdateSelectedOwnerInfo();
+        }
+
+        private void UpdateSelectedOwnerInfo()
+        {
+            if (selectedOwner != null)
+            {
+                var info = selectedOwner.CeleJmeno;
+                if (!string.IsNullOrEmpty(selectedOwner.Telefon))
+                    info += $"\nTel: {selectedOwner.Telefon}";
+                if (!string.IsNullOrEmpty(selectedOwner.Email))
+                    info += $"\nEmail: {selectedOwner.Email}";
+                if (!string.IsNullOrEmpty(selectedOwner.Adresa))
+                    info += $"\nAdresa: {selectedOwner.Adresa}";
+                SelectedOwnerInfo.Text = info;
+            }
+            else
+            {
+                SelectedOwnerInfo.Text = "";
+            }
+        }
+
+        private void AddNewOwnerButton_Click(object sender, RoutedEventArgs e)
+        {
+            var addOwnerWindow = new AddOwnerWindow(dataManager);
+            addOwnerWindow.Owner = this;
+            addOwnerWindow.ShowDialog();
+            LoadOwners();
+        }
+
        private void LoadVehicleData()
        {
            // SPZ
            SpzTextBox.Text = vehicle.Spz ?? "";

+            // Zna<6E>ka
+            ZnackaTextBox.Text = vehicle.Znacka ?? "";
+
            // Model
            ModelTextBox.Text = vehicle.Model ?? "";

@@ -57,18 +119,42 @@ namespace dealer
            // Rok vyroby
            YearTextBox.Text = vehicle.RokVyroby?.ToString() ?? "";

+            // Palivo
+            if (!string.IsNullOrEmpty(vehicle.Palivo))
+            {
+                foreach (System.Windows.Controls.ComboBoxItem item in PalivoComboBox.Items)
+                {
+                    if (item.Content?.ToString() == vehicle.Palivo)
+                    {
+                        PalivoComboBox.SelectedItem = item;
+                        break;
+                    }
+                }
+            }
+
            // Najete km
            MileageTextBox.Text = vehicle.NajeteKm?.ToString() ?? "";

            // Cena
            PriceTextBox.Text = vehicle.Cena?.ToString() ?? "";

+            // Vlastnik - select from combobox
+            if (vehicle.VlastnikId.HasValue)
+            {
+                selectedOwner = dataManager.GetOwnerById(vehicle.VlastnikId);
+                if (selectedOwner != null)
+                {
+                    OwnerComboBox.SelectedItem = selectedOwner;
+                    UpdateSelectedOwnerInfo();
+                }
+            }
+
            // Fotografie (base64)
-            if (!string.IsNullOrEmpty(vehicle.Fotografie))
+            if (vehicle.Fotografie != null && !string.IsNullOrEmpty(vehicle.Fotografie.Data))
            {
                try
                {
-                    byte[] imageBytes = Convert.FromBase64String(vehicle.Fotografie);
+                    byte[] imageBytes = Convert.FromBase64String(vehicle.Fotografie.Data);
                    using (var ms = new MemoryStream(imageBytes))
                    {
                        var bitmap = new BitmapImage();
@@ -155,19 +241,75 @@ namespace dealer

        private void SaveButton_Click(object sender, RoutedEventArgs e)
        {
+            if (string.IsNullOrWhiteSpace(SpzTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte SPZ.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(ZnackaTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte znacku.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(ModelTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte model.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(YearTextBox.Text))
+            {
+                System.Windows.MessageBox.Show("Vyplnte rok vyroby.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (PalivoComboBox.SelectedItem == null)
+            {
+                System.Windows.MessageBox.Show("Vyberte palivo.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (!string.IsNullOrWhiteSpace(MileageTextBox.Text) && (!int.TryParse(MileageTextBox.Text, out int mileageVal) || mileageVal < 0))
+            {
+                System.Windows.MessageBox.Show("Najete km musi byt nezaporne cele cislo.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (!string.IsNullOrWhiteSpace(PriceTextBox.Text) && (!decimal.TryParse(PriceTextBox.Text, out decimal priceVal) || priceVal < 0))
+            {
+                System.Windows.MessageBox.Show("Cena musi byt nezaporne cislo.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
            // Update vehicle properties
            vehicle.Spz = SpzTextBox.Text;
+            vehicle.Znacka = ZnackaTextBox.Text;
            vehicle.Model = ModelTextBox.Text;
            vehicle.Barva = $"#{SelectedColor.R:X2}{SelectedColor.G:X2}{SelectedColor.B:X2}";
            vehicle.RokVyroby = int.TryParse(YearTextBox.Text, out int rok) ? rok : (int?)null;
+            vehicle.Palivo = (PalivoComboBox.SelectedItem as System.Windows.Controls.ComboBoxItem)?.Content?.ToString();
            vehicle.NajeteKm = int.TryParse(MileageTextBox.Text, out int km) ? km : (int?)null;
            vehicle.Cena = decimal.TryParse(PriceTextBox.Text, out decimal cena) ? cena : (decimal?)null;

+            // Update owner reference
+            vehicle.VlastnikId = selectedOwner?.Id;
+            vehicle.Vlastnik = selectedOwner;
+
            // Update photo only if changed
            if (photoChanged && !string.IsNullOrEmpty(SelectedPhotoPath) && File.Exists(SelectedPhotoPath))
            {
                byte[] imageBytes = File.ReadAllBytes(SelectedPhotoPath);
-                vehicle.Fotografie = Convert.ToBase64String(imageBytes);
+                var image = new Image
+                {
+                    Data = Convert.ToBase64String(imageBytes),
+                    FileName = System.IO.Path.GetFileName(SelectedPhotoPath),
+                    ContentType = GetContentType(SelectedPhotoPath)
+                };
+                this.dataManager.AddImage(image);
+                vehicle.FotografieId = image.Id;
+                vehicle.Fotografie = image;
            }

            this.dataManager.Save();
@@ -180,5 +322,19 @@ namespace dealer
        {
            this.Close();
        }
+
+        private static string GetContentType(string filePath)
+        {
+            var extension = System.IO.Path.GetExtension(filePath)?.ToLowerInvariant();
+            return extension switch
+            {
+                ".jpg" or ".jpeg" => "image/jpeg",
+                ".png" => "image/png",
+                ".gif" => "image/gif",
+                ".bmp" => "image/bmp",
+                ".webp" => "image/webp",
+                _ => "application/octet-stream"
+            };
+        }
    }
 }
--- a/dealer/windows/MainWindow.xaml
+++ b/dealer/windows/MainWindow.xaml
@@ -28,10 +28,10 @@
            MouseDoubleClick="VehiclesListView_MouseDoubleClick">
            <ListView.View>
                <GridView>
-                    <GridViewColumn Header="SPZ" Width="150" DisplayMemberBinding="{Binding Spz}" />
-                    <GridViewColumn Header="Model" Width="250"
-                        DisplayMemberBinding="{Binding Model}" />
-                    <GridViewColumn Header="Barva" Width="150">
+                    <GridViewColumn Header="SPZ" Width="120" DisplayMemberBinding="{Binding Spz}" />
+                    <GridViewColumn Header="Značka a Model" Width="200"
+                        DisplayMemberBinding="{Binding ZnackaModel}" />
+                    <GridViewColumn Header="Barva" Width="130">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal">
@@ -45,16 +45,18 @@
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
+                    <GridViewColumn Header="Rok" Width="70" DisplayMemberBinding="{Binding RokVyroby}" />
+                    <GridViewColumn Header="Palivo" Width="100" DisplayMemberBinding="{Binding Palivo}" />
                </GridView>
            </ListView.View>
        </ListView>

-        <!-- Tlačítka -->
+        <!-- Tlacitka -->
        <StackPanel Grid.Row="2"
            Orientation="Horizontal"
            HorizontalAlignment="Center">
            <Button Name="AddButton"
-                Content="Přidat vozidlo"
+                Content="Pridat vozidlo"
                Width="120"
                Height="35"
                Margin="5"
@@ -62,25 +64,33 @@
                Click="AddButton_Click" />
            <Button Name="DetailButton"
                Content="Detail"
-                Width="120"
+                Width="100"
                Height="35"
                Margin="5"
                FontSize="14"
                Click="DetailButton_Click" />
            <Button Name="EditButton"
                Content="Upravit"
-                Width="120"
+                Width="100"
                Height="35"
                Margin="5"
                FontSize="14"
                Click="EditButton_Click" />
            <Button Name="DeleteButton"
                Content="Smazat"
-                Width="120"
+                Width="100"
                Height="35"
                Margin="5"
                FontSize="14"
                Click="DeleteButton_Click" />
+            <Button Name="OwnersButton"
+                Content="Vlastnici"
+                Width="100"
+                Height="35"
+                Margin="5"
+                FontSize="14"
+                Background="#FFE0E0FF"
+                Click="OwnersButton_Click" />
        </StackPanel>
    </Grid>
 </Window>
--- a/dealer/windows/MainWindow.xaml.cs
+++ b/dealer/windows/MainWindow.xaml.cs
@@ -79,7 +79,7 @@ namespace dealer

            if (selectedVehicle == null)
            {
-                System.Windows.MessageBox.Show("Vyberte vozidlo, které chcete zobrazit.", "Upozornění", MessageBoxButton.OK, MessageBoxImage.Warning);
+                System.Windows.MessageBox.Show("Vyberte vozidlo, ktere chcete zobrazit.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }

@@ -99,13 +99,13 @@ namespace dealer

            if (selectedVehicle == null)
            {
-                System.Windows.MessageBox.Show("Vyberte vozidlo, které chcete smazat.", "Upozornění", MessageBoxButton.OK, MessageBoxImage.Warning);
+                System.Windows.MessageBox.Show("Vyberte vozidlo, ktere chcete smazat.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }

            var result = System.Windows.MessageBox.Show(
                $"Opravdu chcete smazat vozidlo {selectedVehicle.Model} (SPZ: {selectedVehicle.Spz})?",
-                "Potvrzení smazání",
+                "Potvrzeni smazani",
                MessageBoxButton.YesNo,
                MessageBoxImage.Question);

@@ -117,5 +117,16 @@ namespace dealer
                this.VehiclesListView.ItemsSource = this.dataManager.GetAllVehicles();
            }
        }
+
+        private void OwnersButton_Click(object sender, RoutedEventArgs e)
+        {
+            var ownersWindow = new OwnersWindow(this.dataManager);
+            ownersWindow.Owner = this;
+            ownersWindow.ShowDialog();
+            
+            // Refresh vehicles list to update owner references
+            this.VehiclesListView.ItemsSource = null;
+            this.VehiclesListView.ItemsSource = this.dataManager.GetAllVehicles();
+        }
    }
 }
--- a/dealer/windows/OwnersWindow.xaml
+++ b/dealer/windows/OwnersWindow.xaml
@@ -0,0 +1,85 @@
+<Window x:Class="dealer.OwnersWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:local="clr-namespace:dealer"
+    mc:Ignorable="d"
+    Title="Sprava vlastniku" Height="500" Width="700"
+    WindowStartupLocation="CenterOwner">
+    <Grid Margin="10">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <TextBlock Grid.Row="0"
+            Text="Evidence vlastniku"
+            FontSize="24"
+            FontWeight="Bold"
+            Margin="0,0,0,10"
+            HorizontalAlignment="Center" />
+
+        <Grid Grid.Row="1" Margin="0,0,0,10">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto" />
+                <ColumnDefinition Width="*" />
+            </Grid.ColumnDefinitions>
+            <TextBlock Text="Hledat:" VerticalAlignment="Center" Margin="0,0,10,0" />
+            <TextBox Name="SearchTextBox" 
+                Grid.Column="1" 
+                Padding="5"
+                TextChanged="SearchTextBox_TextChanged" />
+        </Grid>
+
+        <ListView Grid.Row="2"
+            Name="OwnersListView"
+            Margin="0,0,0,10"
+            MouseDoubleClick="OwnersListView_MouseDoubleClick">
+            <ListView.View>
+                <GridView>
+                    <GridViewColumn Header="Jmeno" Width="120" DisplayMemberBinding="{Binding Jmeno}" />
+                    <GridViewColumn Header="Prijmeni" Width="120" DisplayMemberBinding="{Binding Prijmeni}" />
+                    <GridViewColumn Header="Telefon" Width="120" DisplayMemberBinding="{Binding Telefon}" />
+                    <GridViewColumn Header="Email" Width="180" DisplayMemberBinding="{Binding Email}" />
+                    <GridViewColumn Header="Adresa" Width="150" DisplayMemberBinding="{Binding Adresa}" />
+                </GridView>
+            </ListView.View>
+        </ListView>
+
+        <StackPanel Grid.Row="3"
+            Orientation="Horizontal"
+            HorizontalAlignment="Center">
+            <Button Name="AddButton"
+                Content="Pridat vlastnika"
+                Width="130"
+                Height="35"
+                Margin="5"
+                FontSize="14"
+                Click="AddButton_Click" />
+            <Button Name="EditButton"
+                Content="Upravit"
+                Width="100"
+                Height="35"
+                Margin="5"
+                FontSize="14"
+                Click="EditButton_Click" />
+            <Button Name="DeleteButton"
+                Content="Smazat"
+                Width="100"
+                Height="35"
+                Margin="5"
+                FontSize="14"
+                Click="DeleteButton_Click" />
+            <Button Name="CloseButton"
+                Content="Zavrit"
+                Width="100"
+                Height="35"
+                Margin="5"
+                FontSize="14"
+                Click="CloseButton_Click" />
+        </StackPanel>
+    </Grid>
+</Window>
--- a/dealer/windows/OwnersWindow.xaml.cs
+++ b/dealer/windows/OwnersWindow.xaml.cs
@@ -0,0 +1,91 @@
+using System.Windows;
+using System.Windows.Input;
+
+namespace dealer
+{
+    public partial class OwnersWindow : Window
+    {
+        private DataManager dataManager;
+
+        public OwnersWindow(DataManager dataManager)
+        {
+            InitializeComponent();
+            this.dataManager = dataManager;
+            RefreshOwnersList();
+        }
+
+        private void RefreshOwnersList()
+        {
+            string searchText = SearchTextBox?.Text ?? "";
+            OwnersListView.ItemsSource = null;
+            OwnersListView.ItemsSource = dataManager.SearchOwners(searchText);
+        }
+
+        private void SearchTextBox_TextChanged(object sender, System.Windows.Controls.TextChangedEventArgs e)
+        {
+            RefreshOwnersList();
+        }
+
+        private void AddButton_Click(object sender, RoutedEventArgs e)
+        {
+            var addWindow = new AddOwnerWindow(dataManager);
+            addWindow.Owner = this;
+            addWindow.ShowDialog();
+            RefreshOwnersList();
+        }
+
+        private void EditButton_Click(object sender, RoutedEventArgs e)
+        {
+            var selectedOwner = OwnersListView.SelectedItem as Owner;
+            if (selectedOwner == null)
+            {
+                System.Windows.MessageBox.Show("Vyberte vlastnika, ktereho chcete upravit.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            var editWindow = new EditOwnerWindow(selectedOwner, dataManager);
+            editWindow.Owner = this;
+            editWindow.ShowDialog();
+            RefreshOwnersList();
+        }
+
+        private void DeleteButton_Click(object sender, RoutedEventArgs e)
+        {
+            var selectedOwner = OwnersListView.SelectedItem as Owner;
+            if (selectedOwner == null)
+            {
+                System.Windows.MessageBox.Show("Vyberte vlastnika, ktereho chcete smazat.", "Upozorneni", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            var result = System.Windows.MessageBox.Show(
+                $"Opravdu chcete smazat vlastnika {selectedOwner.CeleJmeno}?\n\nVozidla tohoto vlastnika zustanou, ale nebudou mit prirazeneho vlastnika.",
+                "Potvrzeni smazani",
+                MessageBoxButton.YesNo,
+                MessageBoxImage.Question);
+
+            if (result == MessageBoxResult.Yes)
+            {
+                dataManager.RemoveOwner(selectedOwner);
+                dataManager.Save();
+                RefreshOwnersList();
+            }
+        }
+
+        private void OwnersListView_MouseDoubleClick(object sender, MouseButtonEventArgs e)
+        {
+            var selectedOwner = OwnersListView.SelectedItem as Owner;
+            if (selectedOwner == null) return;
+
+            var editWindow = new EditOwnerWindow(selectedOwner, dataManager);
+            editWindow.Owner = this;
+            editWindow.ShowDialog();
+            RefreshOwnersList();
+        }
+
+        private void CloseButton_Click(object sender, RoutedEventArgs e)
+        {
+            this.Close();
+        }
+    }
+}
--- a/dealer/windows/VehicleDetailWindow.xaml
+++ b/dealer/windows/VehicleDetailWindow.xaml
@@ -47,6 +47,16 @@
                    <TextBlock Name="SpzTextBlock" Grid.Column="1" FontSize="14" />
                </Grid>

+                <!-- Znacka -->
+                <Grid Margin="0,5">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="120" />
+                        <ColumnDefinition Width="*" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock Text="Znacka:" FontSize="14" FontWeight="SemiBold" />
+                    <TextBlock Name="ZnackaTextBlock" Grid.Column="1" FontSize="14" />
+                </Grid>
+
                <!-- Model -->
                <Grid Margin="0,5">
                    <Grid.ColumnDefinitions>
@@ -85,6 +95,16 @@
                    <TextBlock Name="YearTextBlock" Grid.Column="1" FontSize="14" />
                </Grid>

+                <!-- Palivo -->
+                <Grid Margin="0,5">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="120" />
+                        <ColumnDefinition Width="*" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock Text="Palivo:" FontSize="14" FontWeight="SemiBold" />
+                    <TextBlock Name="PalivoTextBlock" Grid.Column="1" FontSize="14" />
+                </Grid>
+
                <!-- Najete km -->
                <Grid Margin="0,5">
                    <Grid.ColumnDefinitions>
@@ -104,6 +124,50 @@
                    <TextBlock Text="Cena:" FontSize="14" FontWeight="SemiBold" />
                    <TextBlock Name="PriceTextBlock" Grid.Column="1" FontSize="14" />
                </Grid>
+
+                <Separator Margin="0,15,0,15" />
+
+                <TextBlock Text="Vlastnik" FontSize="16" FontWeight="Bold" Margin="0,0,0,10" />
+
+                <!-- Vlastnik Jmeno -->
+                <Grid Margin="0,5">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="120" />
+                        <ColumnDefinition Width="*" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock Text="Jmeno a Prijmeni:" FontSize="14" FontWeight="SemiBold" />
+                    <TextBlock Name="OwnerNameTextBlock" Grid.Column="1" FontSize="14" />
+                </Grid>
+
+                <!-- Adresa -->
+                <Grid Margin="0,5">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="120" />
+                        <ColumnDefinition Width="*" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock Text="Adresa:" FontSize="14" FontWeight="SemiBold" />
+                    <TextBlock Name="AddressTextBlock" Grid.Column="1" FontSize="14" TextWrapping="Wrap" />
+                </Grid>
+
+                <!-- Telefon -->
+                <Grid Margin="0,5">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="120" />
+                        <ColumnDefinition Width="*" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock Text="Telefon:" FontSize="14" FontWeight="SemiBold" />
+                    <TextBlock Name="PhoneTextBlock" Grid.Column="1" FontSize="14" />
+                </Grid>
+
+                <!-- Email -->
+                <Grid Margin="0,5">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="120" />
+                        <ColumnDefinition Width="*" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock Text="Email:" FontSize="14" FontWeight="SemiBold" />
+                    <TextBlock Name="EmailTextBlock" Grid.Column="1" FontSize="14" />
+                </Grid>
            </StackPanel>
        </ScrollViewer>

@@ -139,3 +203,5 @@
        </Border>
    </Grid>
 </Window>
+
+
--- a/dealer/windows/VehicleDetailWindow.xaml.cs
+++ b/dealer/windows/VehicleDetailWindow.xaml.cs
@@ -29,6 +29,9 @@ namespace dealer
            // SPZ
            SpzTextBlock.Text = vehicle.Spz ?? "Nezadano";

+            // Znacka
+            ZnackaTextBlock.Text = vehicle.Znacka ?? "Nezadano";
+
            // Model
            ModelTextBlock.Text = vehicle.Model ?? "Nezadano";

@@ -50,6 +53,9 @@ namespace dealer
            // Rok vyroby
            YearTextBlock.Text = vehicle.RokVyroby?.ToString() ?? "Nezadano";

+            // Palivo
+            PalivoTextBlock.Text = vehicle.Palivo ?? "Nezadano";
+
            // Najete km
            if (vehicle.NajeteKm != null)
                MileageTextBlock.Text = vehicle.NajeteKm.Value.ToString("N0") + " km";
@@ -62,12 +68,28 @@ namespace dealer
            else
                PriceTextBlock.Text = "Nezadano";

+            // Vlastnik
+            if (vehicle.Vlastnik != null)
+            {
+                OwnerNameTextBlock.Text = vehicle.Vlastnik.CeleJmeno;
+                AddressTextBlock.Text = vehicle.Vlastnik.Adresa ?? "Nezadano";
+                PhoneTextBlock.Text = vehicle.Vlastnik.Telefon ?? "Nezadano";
+                EmailTextBlock.Text = vehicle.Vlastnik.Email ?? "Nezadano";
+            }
+            else
+            {
+                OwnerNameTextBlock.Text = "Nezadano";
+                AddressTextBlock.Text = "Nezadano";
+                PhoneTextBlock.Text = "Nezadano";
+                EmailTextBlock.Text = "Nezadano";
+            }
+
            // Fotografie (base64)
-            if (!string.IsNullOrEmpty(vehicle.Fotografie))
+            if (vehicle.Fotografie != null && !string.IsNullOrEmpty(vehicle.Fotografie.Data))
            {
                try
                {
-                    byte[] imageBytes = Convert.FromBase64String(vehicle.Fotografie);
+                    byte[] imageBytes = Convert.FromBase64String(vehicle.Fotografie.Data);
                    using (var ms = new MemoryStream(imageBytes))
                    {
                        var bitmap = new BitmapImage();
@@ -129,3 +151,4 @@ namespace dealer
        }
    }
 }
+
--- a/images.example.json
+++ b/images.example.json
--- a/owners.example.json
+++ b/owners.example.json
@@ -0,0 +1,26 @@
+[
+  {
+    "Id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
+    "Jmeno": "Jan",
+    "Prijmeni": "Novak",
+    "Adresa": "Praha 1, Vaclavske namesti 1",
+    "Telefon": "+420 123 456 789",
+    "Email": "jan.novak@email.cz"
+  },
+  {
+    "Id": "b2c3d4e5-f6a7-8901-bcde-f23456789012",
+    "Jmeno": "Marie",
+    "Prijmeni": "Svobodova",
+    "Adresa": "Brno, Husova 23",
+    "Telefon": "+420 987 654 321",
+    "Email": "marie.svobodova@email.cz"
+  },
+  {
+    "Id": "c3d4e5f6-a7b8-9012-cdef-345678901234",
+    "Jmeno": "Petr",
+    "Prijmeni": "Dvorak",
+    "Adresa": "Ostrava, Hlavni 45",
+    "Telefon": "+420 777 888 999",
+    "Email": "petr.dvorak@email.cz"
+  }
+]
--- a/temp_add.txt
+++ b/temp_add.txt
@@ -0,0 +1,181 @@
+<Window x:Class="dealer.AddVehicleWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:local="clr-namespace:dealer"
+    mc:Ignorable="d"
+    Title="Pridat vozidlo" Height="700" Width="500"
+    WindowStartupLocation="CenterOwner"
+    ResizeMode="NoResize">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <ScrollViewer Grid.Row="0" VerticalScrollBarVisibility="Auto">
+            <StackPanel Margin="20">
+                <TextBlock Text="Nove vozidlo"
+                    FontSize="20"
+                    FontWeight="Bold"
+                    Margin="0,0,0,20"
+                    HorizontalAlignment="Center" />
+
+                <TextBlock Text="SPZ:" FontSize="14" Margin="0,5" />
+                <TextBox Name="SpzTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    MaxLength="10"
+                    CharacterCasing="Upper"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Znacka:" FontSize="14" Margin="0,5" />
+                <TextBox Name="ZnackaTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Model:" FontSize="14" Margin="0,5" />
+                <TextBox Name="ModelTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Barva:" FontSize="14" Margin="0,5" />
+                <StackPanel Orientation="Horizontal" Margin="0,0,0,10">
+                    <Border Name="ColorPreviewBorder"
+                        Width="40"
+                        Height="32"
+                        BorderBrush="Gray"
+                        BorderThickness="1"
+                        Background="White"
+                        Margin="0,0,10,0" />
+                    <Button Name="SelectColorButton"
+                        Content="Vybrat barvu"
+                        Width="120"
+                        Height="32"
+                        Click="SelectColorButton_Click" />
+                    <TextBlock Name="ColorNameTextBlock"
+                        Text="Nevybrano"
+                        VerticalAlignment="Center"
+                        Margin="10,0,0,0"
+                        FontStyle="Italic"
+                        Foreground="Gray" />
+                </StackPanel>
+
+                <TextBlock Text="Rok vyroby:" FontSize="14" Margin="0,5" />
+                <TextBox Name="YearTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    MaxLength="4"
+                    PreviewTextInput="NumericOnly_PreviewTextInput"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Palivo:" FontSize="14" Margin="0,5" />
+                <ComboBox Name="PalivoComboBox"
+                    FontSize="14"
+                    Padding="5"
+                    Margin="0,0,0,10">
+                    <ComboBoxItem Content="Benz<6E>n" />
+                    <ComboBoxItem Content="Nafta" />
+                    <ComboBoxItem Content="Elektro" />
+                    <ComboBoxItem Content="Hybrid" />
+                    <ComboBoxItem Content="LPG" />
+                    <ComboBoxItem Content="CNG" />
+                </ComboBox>
+
+                <TextBlock Text="Najete km:" FontSize="14" Margin="0,5" />
+                <TextBox Name="MileageTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    PreviewTextInput="NumericOnly_PreviewTextInput"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Cena (Kc):" FontSize="14" Margin="0,5" />
+                <TextBox Name="PriceTextBox"
+                    FontSize="14"
+                    Padding="5"
+                    PreviewTextInput="DecimalOnly_PreviewTextInput"
+                    Margin="0,0,0,10" />
+
+                <TextBlock Text="Fotografie:" FontSize="14" Margin="0,15,0,5" />
+                <Button Name="SelectPhotoButton"
+                    Content="Vybrat fotografii"
+                    Width="150"
+                    Height="30"
+                    HorizontalAlignment="Left"
+                    Margin="0,0,0,5"
+                    Click="SelectPhotoButton_Click" />
+                <TextBlock Name="PhotoPathTextBlock"
+                    Text="Zadna fotografie nevybrana"
+                    FontStyle="Italic"
+                    Foreground="Gray"
+                    Margin="0,0,0,10"
+                    TextWrapping="Wrap" />
+
+                <Separator Margin="0,15,0,15" />
+
+                <TextBlock Text="Vlastnik" FontSize="16" FontWeight="Bold" Margin="0,0,0,10" />
+
+                <TextBlock Text="Vybrat vlastnika:" FontSize="14" Margin="0,5" />
+                <Grid Margin="0,0,0,10">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="Auto" />
+                    </Grid.ColumnDefinitions>
+                    <ComboBox Name="OwnerComboBox"
+                        FontSize="14"
+                        Padding="5"
+                        IsEditable="True"
+                        IsTextSearchEnabled="False"
+                        StaysOpenOnEdit="True"
+                        DisplayMemberPath="DisplayText"
+                        TextBoxBase.TextChanged="OwnerComboBox_TextChanged"
+                        SelectionChanged="OwnerComboBox_SelectionChanged" />
+                    <Button Name="AddNewOwnerButton"
+                        Grid.Column="1"
+                        Content="+"
+                        Width="35"
+                        Height="35"
+                        Margin="5,0,0,0"
+                        FontSize="18"
+                        FontWeight="Bold"
+                        ToolTip="Pridat noveho vlastnika"
+                        Click="AddNewOwnerButton_Click" />
+                </Grid>
+
+                <TextBlock Name="SelectedOwnerInfo"
+                    Text=""
+                    FontStyle="Italic"
+                    Foreground="Gray"
+                    TextWrapping="Wrap"
+                    Margin="0,0,0,10" />
+            </StackPanel>
+        </ScrollViewer>
+
+        <Border Grid.Row="1"
+            BorderBrush="LightGray"
+            BorderThickness="0,1,0,0"
+            Background="WhiteSmoke">
+            <StackPanel Orientation="Horizontal"
+                HorizontalAlignment="Center"
+                Margin="0,15">
+                <Button Name="SaveButton"
+                    Content="Ulozit"
+                    Width="100"
+                    Height="35"
+                    Margin="5"
+                    FontSize="14"
+                    Click="SaveButton_Click" />
+                <Button Name="CancelButton"
+                    Content="Zrusit"
+                    Width="100"
+                    Height="35"
+                    Margin="5"
+                    FontSize="14"
+                    Click="CancelButton_Click" />
+            </StackPanel>
+        </Border>
+    </Grid>
+</Window>
--- a/vehicles.example.json
+++ b/vehicles.example.json
@@ -0,0 +1,38 @@
+[
+  {
+    "Spz": "1A2 3456",
+    "Znacka": "Skoda",
+    "Model": "Octavia",
+    "Barva": "#0055AA",
+    "RokVyroby": 2020,
+    "Palivo": "Benz<6E>n",
+    "NajeteKm": 45000,
+    "Cena": 350000,
+    "FotografieId": null,
+    "VlastnikId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890"
+  },
+  {
+    "Spz": "7B8 9012",
+    "Znacka": "BMW",
+    "Model": "X5",
+    "Barva": "#000000",
+    "RokVyroby": 2019,
+    "Palivo": "Nafta",
+    "NajeteKm": 78000,
+    "Cena": 850000,
+    "FotografieId": "11111111-2222-3333-4444-555555555555",
+    "VlastnikId": "b2c3d4e5-f6a7-8901-bcde-f23456789012"
+  },
+  {
+    "Spz": "3C4 5678",
+    "Znacka": "Tesla",
+    "Model": "Model 3",
+    "Barva": "#FFFFFF",
+    "RokVyroby": 2022,
+    "Palivo": "Elektro",
+    "NajeteKm": 15000,
+    "Cena": 1200000,
+    "FotografieId": null,
+    "VlastnikId": "c3d4e5f6-a7b8-9012-cdef-345678901234"
+  }
+]