avancement

App.razor

@@ -1,12 +1,10 @@
-<Router AppAssembly="@typeof(App).Assembly">
+<CascadingBlazoredModal>
+<Router AppAssembly="@typeof(Program).Assembly">
     <Found Context="routeData">
         <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
-        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
     </Found>
     <NotFound>
-        <PageTitle>Not found</PageTitle>
-        <LayoutView Layout="@typeof(MainLayout)">
-            <p role="alert">Sorry, there's nothing at this address.</p>
-        </LayoutView>
+        <p>Sorry, there's nothing at this address.</p>
     </NotFound>
 </Router>
+</CascadingBlazoredModal>

Factories/ItemFactory.cs.cs

@@ -0,0 +1,48 @@
+using ProjetBlaser.Models;
+
+namespace ProjetBlaser.Factories
+{
+    public static class ItemFactory
+    {
+        public static ItemModel ToModel(Item item, byte[] imageContent)
+        {
+            return new ItemModel
+            {
+                Id = item.Id,
+                DisplayName = item.DisplayName,
+                Name = item.Name,
+                RepairWith = item.RepairWith,
+                EnchantCategories = item.EnchantCategories,
+                MaxDurability = item.MaxDurability,
+                StackSize = item.StackSize,
+                ImageContent = imageContent
+            };
+        }
+
+        public static Item Create(ItemModel model)
+        {
+            return new Item
+            {
+                Id = model.Id,
+                DisplayName = model.DisplayName,
+                Name = model.Name,
+                RepairWith = model.RepairWith,
+                EnchantCategories = model.EnchantCategories,
+                MaxDurability = model.MaxDurability,
+                StackSize = model.StackSize,
+                CreatedDate = DateTime.Now
+            };
+        }
+
+        public static void Update(Item item, ItemModel model)
+        {
+            item.DisplayName = model.DisplayName;
+            item.Name = model.Name;
+            item.RepairWith = model.RepairWith;
+            item.EnchantCategories = model.EnchantCategories;
+            item.MaxDurability = model.MaxDurability;
+            item.StackSize = model.StackSize;
+            item.UpdatedDate = DateTime.Now;
+        }
+    }
+}

Models/ItemModel.cs

@@ -0,0 +1,37 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace ProjetBlaser.Models
+{
+    public class ItemModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        [StringLength(50, ErrorMessage = "The display name must not exceed 50 characters.")]
+        public string DisplayName { get; set; }
+
+        [Required]
+        [StringLength(50, ErrorMessage = "The name must not exceed 50 characters.")]
+        [RegularExpression(@"^[a-z''-'\s]{1,40}$", ErrorMessage = "Only lowercase characters are accepted.")]
+        public string Name { get; set; }
+
+        [Required]
+        [Range(1, 64)]
+        public int StackSize { get; set; }
+
+        [Required]
+        [Range(1, 125)]
+        public int MaxDurability { get; set; }
+
+        public List<string> EnchantCategories { get; set; }
+
+        public List<string> RepairWith { get; set; }
+
+        [Required]
+        [Range(typeof(bool), "true", "true", ErrorMessage = "You must agree to the terms.")]
+        public bool AcceptCondition { get; set; }
+
+        [Required(ErrorMessage = "The image of the item is mandatory!")]
+        public byte[] ImageContent { get; set; }
+    }
+}

Models/PanelBody.cs

@@ -0,0 +1,8 @@
+namespace ProjetBlaser.Models
+{
+    public class PanelBody
+    {
+        public string? Text { get; set; }
+        public string? Style { get; set; }
+    }
+}

Pages/Add.razor

@@ -0,0 +1,69 @@
+@page "/add"
+
+<h3>Add</h3>
+
+<EditForm Model="@itemModel" OnValidSubmit="@HandleValidSubmit">
+    <DataAnnotationsValidator />
+    <ValidationSummary />
+
+    <p>
+        <label for="display-name">
+            Display name:
+            <InputText id="display-name" @bind-Value="itemModel.DisplayName" />
+        </label>
+    </p>
+    <p>
+        <label for="name">
+            Name:
+            <InputText id="name" @bind-Value="itemModel.Name" />
+        </label>
+    </p>
+    <p>
+        <label for="stack-size">
+            Stack size:
+            <InputNumber id="stack-size" @bind-Value="itemModel.StackSize" />
+        </label>
+    </p>
+    <p>
+        <label for="max-durability">
+            Max durability:
+            <InputNumber id="max-durability" @bind-Value="itemModel.MaxDurability" />
+        </label>
+    </p>
+    <p>
+        Enchant categories:
+        <div>
+            @foreach (var item in enchantCategories)
+            {
+                <label>
+                    <input type="checkbox" @onchange="@(e => OnEnchantCategoriesChange(item, e.Value))" />@item
+                </label>
+            }
+        </div>
+    </p>
+    <p>
+        Repair with:
+        <div>
+            @foreach (var item in repairWith)
+            {
+                <label>
+                    <input type="checkbox" @onchange="@(e => OnRepairWithChange(item, e.Value))" />@item
+                </label>
+            }
+        </div>
+    </p>
+    <p>
+        <label>
+            Item image:
+            <InputFile OnChange="@LoadImage" accept=".png" />
+        </label>
+    </p>
+    <p>
+        <label>
+            Accept Condition:
+            <InputCheckbox @bind-Value="itemModel.AcceptCondition" />
+        </label>
+    </p>
+
+    <button type="submit">Submit</button>
+</EditForm>

Pages/Add.razor.cs

@@ -0,0 +1,89 @@
+using Blazored.LocalStorage;
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Forms;
+using ProjetBlaser.Models;
+using ProjetBlaser.Services;
+
+namespace ProjetBlaser.Pages
+{
+    public partial class Add
+    {
+        /// <summary>
+        /// The default enchant categories.
+        /// </summary>
+        private List<string> enchantCategories = new List<string>() { "armor", "armor_head", "armor_chest", "weapon", "digger", "breakable", "vanishable" };
+
+        /// <summary>
+        /// The current item model
+        /// </summary>
+        private ItemModel itemModel = new()
+        {
+            EnchantCategories = new List<string>(),
+            RepairWith = new List<string>()
+        };
+
+        /// <summary>
+        /// The default repair with.
+        /// </summary>
+        private List<string> repairWith = new List<string>() { "oak_planks", "spruce_planks", "birch_planks", "jungle_planks", "acacia_planks", "dark_oak_planks", "crimson_planks", "warped_planks" };
+
+        [Inject]
+        public IDataService DataService { get; set; }
+
+        [Inject]
+        public NavigationManager NavigationManager { get; set; }
+
+        private async void HandleValidSubmit()
+        {
+            await DataService.Add(itemModel);
+
+            NavigationManager.NavigateTo("list");
+        }
+
+        private async Task LoadImage(InputFileChangeEventArgs e)
+        {
+            // Set the content of the image to the model
+            using (var memoryStream = new MemoryStream())
+            {
+                await e.File.OpenReadStream().CopyToAsync(memoryStream);
+                itemModel.ImageContent = memoryStream.ToArray();
+            }
+        }
+
+        private void OnEnchantCategoriesChange(string item, object checkedValue)
+        {
+            if ((bool)checkedValue)
+            {
+                if (!itemModel.EnchantCategories.Contains(item))
+                {
+                    itemModel.EnchantCategories.Add(item);
+                }
+
+                return;
+            }
+
+            if (itemModel.EnchantCategories.Contains(item))
+            {
+                itemModel.EnchantCategories.Remove(item);
+            }
+        }
+
+        private void OnRepairWithChange(string item, object checkedValue)
+        {
+            if ((bool)checkedValue)
+            {
+                if (!itemModel.RepairWith.Contains(item))
+                {
+                    itemModel.RepairWith.Add(item);
+                }
+
+                return;
+            }
+
+            if (itemModel.RepairWith.Contains(item))
+            {
+                itemModel.RepairWith.Remove(item);
+            }
+        }
+    }
+}

Pages/BlazorRoute.razor

@@ -0,0 +1,3 @@
+@page "/BlazorRoute"
+@page "/DifferentBlazorRoute"
+<h3>BlazorRoute</h3>

Pages/Edit.razor

@@ -0,0 +1,82 @@
+@page "/edit/{Id:int}"
+
+<h3>Edit</h3>
+
+<EditForm Model="@itemModel" OnValidSubmit="@HandleValidSubmit">
+    <DataAnnotationsValidator />
+    <ValidationSummary />
+
+    <p>
+        <label for="display-name">
+            Display name:
+            <InputText id="display-name" @bind-Value="itemModel.DisplayName" />
+        </label>
+    </p>
+    <p>
+        <label for="name">
+            Name:
+            <InputText id="name" @bind-Value="itemModel.Name" />
+        </label>
+    </p>
+    <p>
+        <label for="stack-size">
+            Stack size:
+            <InputNumber id="stack-size" @bind-Value="itemModel.StackSize" />
+        </label>
+    </p>
+    <p>
+        <label for="max-durability">
+            Max durability:
+            <InputNumber id="max-durability" @bind-Value="itemModel.MaxDurability" />
+        </label>
+    </p>
+    <p>
+        Enchant categories:
+        <div>
+            @foreach (var item in enchantCategories)
+            {
+                <label>
+                    <input type="checkbox" @onchange="@(e => OnEnchantCategoriesChange(item, e.Value))" checked="@(itemModel.EnchantCategories.Contains(item) ? "checked" : null)" />@item
+                </label>
+            }
+        </div>
+    </p>
+    <p>
+        Repair with:
+        <div>
+            @foreach (var item in repairWith)
+            {
+                <label>
+                    <input type="checkbox" @onchange="@(e => OnRepairWithChange(item, e.Value))" checked="@(itemModel.RepairWith.Contains(item) ? "checked" : null)" />@item
+                </label>
+            }
+        </div>
+    </p>
+    <p>
+        <label>
+            Current Item image:
+            @if (File.Exists($"{WebHostEnvironment.WebRootPath}/images/{itemModel.Name}.png"))
+            {
+                <img src="images/@(itemModel.Name).png" class="img-thumbnail" title="@itemModel.DisplayName" alt="@itemModel.DisplayName" style="max-width: 150px"/>
+            }
+            else
+            {
+                <img src="images/default.png" class="img-thumbnail" title="@itemModel.DisplayName" alt="@itemModel.DisplayName" style="max-width: 150px"/>
+            }
+        </label>
+    </p>
+    <p>
+        <label>
+            Item image:
+            <InputFile OnChange="@LoadImage" accept=".png" />
+        </label>
+    </p>
+    <p>
+        <label>
+            Accept Condition:
+            <InputCheckbox @bind-Value="itemModel.AcceptCondition" />
+        </label>
+    </p>
+
+    <button type="submit">Submit</button>
+</EditForm>

Pages/Edit.razor.cs

@@ -0,0 +1,123 @@
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Forms;
+using ProjetBlaser.Factories;
+using ProjetBlaser.Models;
+using ProjetBlaser.Services;
+
+namespace ProjetBlaser.Pages
+{
+
+
+    public partial class Edit
+    {
+        [Parameter]
+        public int Id { get; set; }
+
+        /// <summary>
+        /// The default enchant categories.
+        /// </summary>
+        private List<string> enchantCategories = new List<string>() { "armor", "armor_head", "armor_chest", "weapon", "digger", "breakable", "vanishable" };
+
+        /// <summary>
+        /// The current item model
+        /// </summary>
+        private ItemModel itemModel = new()
+        {
+            EnchantCategories = new List<string>(),
+            RepairWith = new List<string>()
+        };
+
+        /// <summary>
+        /// The default repair with.
+        /// </summary>
+        private List<string> repairWith = new List<string>() { "oak_planks", "spruce_planks", "birch_planks", "jungle_planks", "acacia_planks", "dark_oak_planks", "crimson_planks", "warped_planks" };
+
+        [Inject]
+        public IDataService DataService { get; set; }
+
+        [Inject]
+        public NavigationManager NavigationManager { get; set; }
+
+        [Inject]
+        public IWebHostEnvironment WebHostEnvironment { get; set; }
+
+        protected override async Task OnInitializedAsync()
+        {
+            var item = await DataService.GetById(Id);
+
+            var fileContent = await File.ReadAllBytesAsync($"{WebHostEnvironment.WebRootPath}/images/default.png");
+
+            if (File.Exists($"{WebHostEnvironment.WebRootPath}/images/{itemModel.Name}.png"))
+            {
+                fileContent = await File.ReadAllBytesAsync($"{WebHostEnvironment.WebRootPath}/images/{item.Name}.png");
+            }
+
+            // Set the model with the item
+            itemModel = new ItemModel
+            {
+                Id = item.Id,
+                DisplayName = item.DisplayName,
+                Name = item.Name,
+                RepairWith = item.RepairWith,
+                EnchantCategories = item.EnchantCategories,
+                MaxDurability = item.MaxDurability,
+                StackSize = item.StackSize,
+                ImageContent = fileContent
+            };
+            itemModel = ItemFactory.ToModel(item, fileContent);
+        }
+
+        private async void HandleValidSubmit()
+        {
+            await DataService.Update(Id, itemModel);
+
+            NavigationManager.NavigateTo("list");
+        }
+
+        private async Task LoadImage(InputFileChangeEventArgs e)
+        {
+            // Set the content of the image to the model
+            using (var memoryStream = new MemoryStream())
+            {
+                await e.File.OpenReadStream().CopyToAsync(memoryStream);
+                itemModel.ImageContent = memoryStream.ToArray();
+            }
+        }
+
+        private void OnEnchantCategoriesChange(string item, object checkedValue)
+        {
+            if ((bool)checkedValue)
+            {
+                if (!itemModel.EnchantCategories.Contains(item))
+                {
+                    itemModel.EnchantCategories.Add(item);
+                }
+
+                return;
+            }
+
+            if (itemModel.EnchantCategories.Contains(item))
+            {
+                itemModel.EnchantCategories.Remove(item);
+            }
+        }
+
+        private void OnRepairWithChange(string item, object checkedValue)
+        {
+            if ((bool)checkedValue)
+            {
+                if (!itemModel.RepairWith.Contains(item))
+                {
+                    itemModel.RepairWith.Add(item);
+                }
+
+                return;
+            }
+
+            if (itemModel.RepairWith.Contains(item))
+            {
+                itemModel.RepairWith.Remove(item);
+            }
+        }
+    }
+}

Pages/List.razor

@@ -2,7 +2,11 @@
 @using ProjetBlaser.Models
 
 <h3>List</h3>
-
+<div>
+    <NavLink class="btn btn-primary" href="Add" Match="NavLinkMatch.All">
+        <i class="fa fa-plus"></i> Ajouter
+    </NavLink>
+</div>
 <DataGrid TItem="Item"
           Data="@items"
           ReadData="@OnReadData"
@@ -11,6 +15,18 @@
           ShowPager
           Responsive>
     <DataGridColumn TItem="Item" Field="@nameof(Item.Id)" Caption="#" />
+     <DataGridColumn TItem="Item" Field="@nameof(Item.Id)" Caption="Image">
+        <DisplayTemplate>
+            @if (File.Exists($"{WebHostEnvironment.WebRootPath}/images/{context.Name}.png"))
+            {
+                <img src="images/@(context.Name).png" class="img-thumbnail" title="@context.DisplayName" alt="@context.DisplayName" style="max-width: 150px"/>
+            }
+            else
+            {
+                <img src="images/default.png" class="img-thumbnail" title="@context.DisplayName" alt="@context.DisplayName" style="max-width: 150px"/>
+            }
+        </DisplayTemplate>
+    </DataGridColumn>
     <DataGridColumn TItem="Item" Field="@nameof(Item.DisplayName)" Caption="Display name" />
     <DataGridColumn TItem="Item" Field="@nameof(Item.StackSize)" Caption="Stack size" />
     <DataGridColumn TItem="Item" Field="@nameof(Item.MaxDurability)" Caption="Maximum durability" />
@@ -25,4 +41,10 @@
         </DisplayTemplate>
     </DataGridColumn>
     <DataGridColumn TItem="Item" Field="@nameof(Item.CreatedDate)" Caption="Created date" DisplayFormat="{0:d}" DisplayFormatProvider="@System.Globalization.CultureInfo.GetCultureInfo("fr-FR")" />
+    <DataGridColumn TItem="Item" Field="@nameof(Item.Id)" Caption="Action">
+        <DisplayTemplate>
+            <a href="Edit/@(context.Id)" class="btn btn-primary"><i class="fa fa-edit"></i> Editer</a>
+            <button type="button" class="btn btn-primary" @onclick="() => OnDelete(context.Id)"><i class="fa fa-trash"></i> Supprimer</button>
+        </DisplayTemplate>
+    </DataGridColumn>
 </DataGrid>

Pages/List.razor.cs

@@ -2,6 +2,7 @@
 using Blazorise.DataGrid;
 using Microsoft.AspNetCore.Components;
 using ProjetBlaser.Models;
+using ProjetBlaser.Services;
 
 namespace ProjetBlaser.Pages
 {
@@ -12,32 +13,10 @@ namespace ProjetBlaser.Pages
         private int totalItem;
 
         [Inject]
-        public HttpClient Http { get; set; }
+        public IDataService DataService { get; set; }
 
         [Inject]
-        public ILocalStorageService LocalStorage { get; set; }
-
-        [Inject]
-        public NavigationManager NavigationManager { get; set; }
-
-        protected override async Task OnAfterRenderAsync(bool firstRender)
-        {
-            // Do not treat this action if is not the first render
-            if (!firstRender)
-            {
-                return;
-            }
-
-            var currentData = await LocalStorage.GetItemAsync<Item[]>("data");
-
-            // Check if data exist in the local storage
-            if (currentData == null)
-            {
-                // this code add in the local storage the fake data (we load the data sync for initialize the data before load the OnReadData method)
-                var originalData = Http.GetFromJsonAsync<Item[]>($"{NavigationManager.BaseUri}fake-data.json").Result;
-                await LocalStorage.SetItemAsync("data", originalData);
-            }
-        }
+        public IWebHostEnvironment WebHostEnvironment { get; set; }
 
         private async Task OnReadData(DataGridReadDataEventArgs<Item> e)
         {
@@ -46,15 +25,15 @@ namespace ProjetBlaser.Pages
                 return;
             }
 
-            // When you use a real API, we use this follow code
-            //var response = await Http.GetJsonAsync<Data[]>( $"http://my-api/api/data?page={e.Page}&pageSize={e.PageSize}" );
-            var response = (await LocalStorage.GetItemAsync<Item[]>("data")).Skip((e.Page - 1) * e.PageSize).Take(e.PageSize).ToList();
-
             if (!e.CancellationToken.IsCancellationRequested)
             {
-                totalItem = (await LocalStorage.GetItemAsync<List<Item>>("data")).Count;
-                items = new List<Item>(response); // an actual data for the current page
+                items = await DataService.List(e.Page, e.PageSize);
+                totalItem = await DataService.Count();
             }
         }
+        private void OnDelete(int id)
+        {
+
+        }
     }
 }

Pages/ParameterParen.razor

@@ -0,0 +1,10 @@
+@page "/parameter-parent"
+@using ProjetBlaser.Models
+
+<h1>Child component (without attribute values)</h1>
+
+<ParameterChild />
+
+<h1>Child component (with attribute values)</h1>
+
+<ParameterChild Title="Set by Parent" Body="@(new PanelBody() { Text = "Set by parent.", Style = "italic" })" />

Pages/RouteParameter.razor

@@ -0,0 +1,13 @@
+@page "/RouteParameter/{text?}"
+
+<h1>Blazor is @Text!</h1>
+
+@code {
+    [Parameter]
+    public string? Text { get; set; }
+
+    protected override void OnInitialized()
+    {
+        Text = Text ?? "fantastic";
+    }
+}

Pages/User.razor

@@ -0,0 +1,17 @@
+@page "/user/{Id:int}"
+
+<p>
+    Id: @Id
+</p>
+
+<p>
+    Option: @Option
+</p>
+
+@code {
+    [Parameter]
+    public int Id { get; set; }
+
+    [Parameter]
+    public bool Option { get; set; }
+}

Pages/_Layout.cshtml

@@ -29,7 +29,9 @@
 
     <script src="_framework/blazor.server.js"></script>
     <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.15.4/css/all.css">
+    <link href="_content/Blazored.Modal/blazored-modal.css" rel="stylesheet" />
     <link href="_content/Blazorise/blazorise.css" rel="stylesheet" />
     <link href="_content/Blazorise.Bootstrap/blazorise.bootstrap.css" rel="stylesheet" />
+    <script src="_content/Blazored.Modal/blazored.modal.js"></script>
 </body>
 </html>

Program.cs

@@ -5,6 +5,8 @@ using Blazorise.Icons.FontAwesome;
 using Microsoft.AspNetCore.Components;
 using Microsoft.AspNetCore.Components.Web;
 using ProjetBlaser.Data;
+using ProjetBlaser.Services;
+using Blazored.Modal;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -13,6 +15,8 @@ builder.Services.AddRazorPages();
 builder.Services.AddServerSideBlazor();
 builder.Services.AddSingleton<WeatherForecastService>();
 builder.Services.AddHttpClient();
+builder.Services.AddScoped<IDataService, DataLocalService>();
+builder.Services.AddBlazoredModal();
 builder.Services
    .AddBlazorise()
    .AddBootstrapProviders()

ProjetBlaser.csproj

@@ -8,9 +8,14 @@
 
   <ItemGroup>
     <PackageReference Include="Blazored.LocalStorage" Version="4.2.0" />
+    <PackageReference Include="Blazored.Modal" Version="7.1.0" />
     <PackageReference Include="Blazorise.Bootstrap" Version="1.1.2" />
     <PackageReference Include="Blazorise.DataGrid" Version="1.1.2" />
     <PackageReference Include="Blazorise.Icons.FontAwesome" Version="1.1.2" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Modals\" />
+  </ItemGroup>
+
 </Project>

Services/DataLocalService.cs

@@ -0,0 +1,183 @@
+using Blazored.LocalStorage;
+using Microsoft.AspNetCore.Components;
+using ProjetBlaser.Factories;
+using ProjetBlaser.Models;
+
+namespace ProjetBlaser.Services
+{
+    public class DataLocalService : IDataService
+    {
+        private readonly HttpClient _http;
+        private readonly ILocalStorageService _localStorage;
+        private readonly NavigationManager _navigationManager;
+        private readonly IWebHostEnvironment _webHostEnvironment;
+
+        public DataLocalService(
+            ILocalStorageService localStorage,
+            HttpClient http,
+            IWebHostEnvironment webHostEnvironment,
+            NavigationManager navigationManager)
+        {
+            _localStorage = localStorage;
+            _http = http;
+            _webHostEnvironment = webHostEnvironment;
+            _navigationManager = navigationManager;
+        }
+
+        public async Task Add(ItemModel model)
+        {
+            // Get the current data
+            var currentData = await _localStorage.GetItemAsync<List<Item>>("data");
+
+            // Simulate the Id
+            model.Id = currentData.Max(s => s.Id) + 1;
+            currentData.Add(ItemFactory.Create(model));
+
+            // Add the item to the current data
+            currentData.Add(new Item
+            {
+                Id = model.Id,
+                DisplayName = model.DisplayName,
+                Name = model.Name,
+                RepairWith = model.RepairWith,
+                EnchantCategories = model.EnchantCategories,
+                MaxDurability = model.MaxDurability,
+                StackSize = model.StackSize,
+                CreatedDate = DateTime.Now
+            });
+
+            // Save the image
+            var imagePathInfo = new DirectoryInfo($"{_webHostEnvironment.WebRootPath}/images");
+
+            // Check if the folder "images" exist
+            if (!imagePathInfo.Exists)
+            {
+                imagePathInfo.Create();
+            }
+
+            // Determine the image name
+            var fileName = new FileInfo($"{imagePathInfo}/{model.Name}.png");
+
+            // Write the file content
+            await File.WriteAllBytesAsync(fileName.FullName, model.ImageContent);
+
+            // Save the data
+            await _localStorage.SetItemAsync("data", currentData);
+        }
+
+        public async Task<int> Count()
+        {
+            return (await _localStorage.GetItemAsync<Item[]>("data")).Length;
+        }
+
+        public async Task<List<Item>> List(int currentPage, int pageSize)
+        {
+            // Load data from the local storage
+            var currentData = await _localStorage.GetItemAsync<Item[]>("data");
+
+            // Check if data exist in the local storage
+            if (currentData == null)
+            {
+                // this code add in the local storage the fake data
+                var originalData = await _http.GetFromJsonAsync<Item[]>($"{_navigationManager.BaseUri}fake-data.json");
+                await _localStorage.SetItemAsync("data", originalData);
+            }
+
+            return (await _localStorage.GetItemAsync<Item[]>("data")).Skip((currentPage - 1) * pageSize).Take(pageSize).ToList();
+        }
+        public async Task<Item> GetById(int id)
+        {
+            // Get the current data
+            var currentData = await _localStorage.GetItemAsync<List<Item>>("data");
+
+            // Get the item int the list
+            var item = currentData.FirstOrDefault(w => w.Id == id);
+
+            // Check if item exist
+            if (item == null)
+            {
+                throw new Exception($"Unable to found the item with ID: {id}");
+            }
+
+            return item;
+        }
+
+        public async Task Update(int id, ItemModel model)
+        {
+            // Get the current data
+            var currentData = await _localStorage.GetItemAsync<List<Item>>("data");
+
+            // Get the item int the list
+            var item = currentData.FirstOrDefault(w => w.Id == id);
+            ItemFactory.Update(item, model);
+
+            // Check if item exist
+            if (item == null)
+            {
+                throw new Exception($"Unable to found the item with ID: {id}");
+            }
+
+            // Save the image
+            var imagePathInfo = new DirectoryInfo($"{_webHostEnvironment.WebRootPath}/images");
+
+            // Check if the folder "images" exist
+            if (!imagePathInfo.Exists)
+            {
+                imagePathInfo.Create();
+            }
+
+            // Delete the previous image
+            if (item.Name != model.Name)
+            {
+                var oldFileName = new FileInfo($"{imagePathInfo}/{item.Name}.png");
+
+                if (oldFileName.Exists)
+                {
+                    File.Delete(oldFileName.FullName);
+                }
+            }
+
+            // Determine the image name
+            var fileName = new FileInfo($"{imagePathInfo}/{model.Name}.png");
+
+            // Write the file content
+            await File.WriteAllBytesAsync(fileName.FullName, model.ImageContent);
+
+            // Modify the content of the item
+            item.DisplayName = model.DisplayName;
+            item.Name = model.Name;
+            item.RepairWith = model.RepairWith;
+            item.EnchantCategories = model.EnchantCategories;
+            item.MaxDurability = model.MaxDurability;
+            item.StackSize = model.StackSize;
+            item.UpdatedDate = DateTime.Now;
+
+            // Save the data
+            await _localStorage.SetItemAsync("data", currentData);
+        }
+
+        public async Task Delete(int id)
+        {
+            // Get the current data
+            var currentData = await _localStorage.GetItemAsync<List<Item>>("data");
+
+            // Get the item int the list
+            var item = currentData.FirstOrDefault(w => w.Id == id);
+
+            // Delete item in
+            currentData.Remove(item);
+
+            // Delete the image
+            var imagePathInfo = new DirectoryInfo($"{_webHostEnvironment.WebRootPath}/images");
+            var fileName = new FileInfo($"{imagePathInfo}/{item.Name}.png");
+
+            if (fileName.Exists)
+            {
+                File.Delete(fileName.FullName);
+            }
+
+            // Save the data
+            await _localStorage.SetItemAsync("data", currentData);
+        }
+    }
+}

Services/IDataService.cs

@@ -0,0 +1,18 @@
+using ProjetBlaser.Models;
+
+namespace ProjetBlaser.Services
+{
+    public interface IDataService
+    {
+        Task Add(ItemModel model);
+
+        Task<int> Count();
+
+        Task<List<Item>> List(int currentPage, int pageSize);
+
+        Task<Item> GetById(int id);
+
+        Task Update(int id, ItemModel model);
+        Task Delete(int id);
+    }
+}

Shared/ParameterChild.razor

@@ -0,0 +1,20 @@
+@using ProjetBlaser.Models
+<div class="card w-25" style="margin-bottom:15px">
+    <div class="card-header font-weight-bold">@Title</div>
+    <div class="card-body" style="font-style:@Body.Style">
+        @Body.Text
+    </div>
+</div>
+
+@code {
+    [Parameter]
+    public string Title { get; set; } = "Set By Child";
+
+    [Parameter]
+    public PanelBody Body { get; set; } =
+        new()
+        {
+            Text = "Set by child.",
+            Style = "normal"
+        };
+}