Update C# code samples for correct namespace usages on Blazor

docs/en/tutorials/todo/layered/index.md

@@ -171,13 +171,13 @@ This application has a single [entity](../../../framework/architecture/domain-dr
 using System;
 using Volo.Abp.Domain.Entities;
 
-namespace TodoApp
+namespace TodoApp;
+
+public class TodoItem : BasicAggregateRoot<Guid>
 {
-    public class TodoItem : BasicAggregateRoot<Guid>
+    public string Text { get; set; } = string.Empty;
-    {
-        public string Text { get; set; } = string.Empty;
-    }
 }
+
 ````
 
 `BasicAggregateRoot` is the simplest base class to create root entities, and `Guid` is the primary key (`Id`) of the entity here.
@@ -281,15 +281,15 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using Volo.Abp.Application.Services;
 
-namespace TodoApp
+namespace TodoApp;
+
+public interface ITodoAppService : IApplicationService
 {
-    public interface ITodoAppService : IApplicationService
+    Task<List<TodoItemDto>> GetListAsync();
-    {
+    Task<TodoItemDto> CreateAsync(string text);
-        Task<List<TodoItemDto>> GetListAsync();
+    Task DeleteAsync(Guid id);
-        Task<TodoItemDto> CreateAsync(string text);
-        Task DeleteAsync(Guid id);
-    }
 }
+
 ````
 
 ### Data Transfer Object
@@ -299,14 +299,14 @@ namespace TodoApp
 ````csharp
 using System;
 
-namespace TodoApp
+namespace TodoApp;
+
+public class TodoItemDto
 {
-    public class TodoItemDto
+    public Guid Id { get; set; }
-    {
+    public string Text { get; set; } = string.Empty;
-        public Guid Id { get; set; }
-        public string Text { get; set; } = string.Empty;
-    }
 }
+
 ````
 
 This is a very simple DTO class that matches our `TodoItem` entity. We are ready to implement the `ITodoAppService`.
@@ -323,19 +323,18 @@ using System.Threading.Tasks;
 using Volo.Abp.Application.Services;
 using Volo.Abp.Domain.Repositories;
 
-namespace TodoApp
+namespace TodoApp;
+
+public class TodoAppService : ApplicationService, ITodoAppService
 {
-    public class TodoAppService : ApplicationService, ITodoAppService
+    private readonly IRepository<TodoItem, Guid> _todoItemRepository;
-    {
-        private readonly IRepository<TodoItem, Guid> _todoItemRepository;
 
-        public TodoAppService(IRepository<TodoItem, Guid> todoItemRepository)
+    public TodoAppService(IRepository<TodoItem, Guid> todoItemRepository)
-        {
+    {
-            _todoItemRepository = todoItemRepository;
+        _todoItemRepository = todoItemRepository;
-        }
-        
-        // TODO: Implement the methods here...
     }
+    
+    // TODO: Implement the methods here...
 }
 ````
 
@@ -412,8 +411,8 @@ Open the `Index.cshtml.cs` file in the `Pages` folder of the *TodoApp.Web* proje
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
-namespace TodoApp.Web.Pages
+namespace TodoApp.Web.Pages;
-{
+
     public class IndexModel : TodoAppPageModel
     {
         public List<TodoItemDto> TodoItems { get; set; }
@@ -430,7 +429,7 @@ namespace TodoApp.Web.Pages
             TodoItems = await _todoAppService.GetListAsync();
         }
     }
-}
+
 ````
 
 This class uses the `ITodoAppService` to get the list of todo items and assign the `TodoItems` property. We will use it to render the todo items on the razor page.
@@ -578,34 +577,41 @@ using Microsoft.AspNetCore.Components;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
-namespace TodoApp.Blazor.Pages
+{{if UI=="Blazor" || UI=="BlazorWebApp"}}
+namespace TodoApp.Blazor.Client.Pages;
+{{else if UI=="BlazorServer"}}
+namespace TodoApp.Blazor.Pages;
+{{else if UI=="MAUIBlazor"}}
+namespace TodoApp.MauiBlazor.Pages;
+{{end}}
+
+namespace TodoApp.Blazor.Pages;
+
+public partial class Index
 {
-    public partial class Index
+    [Inject]
-    {
+    private ITodoAppService TodoAppService { get; set; }
-        [Inject]
-        private ITodoAppService TodoAppService { get; set; }
 
-        private List<TodoItemDto> TodoItems { get; set; } = new List<TodoItemDto>();
+    private List<TodoItemDto> TodoItems { get; set; } = new List<TodoItemDto>();
-        private string NewTodoText { get; set; } = string.Empty;
+    private string NewTodoText { get; set; } = string.Empty;
 
-        protected override async Task OnInitializedAsync()
+    protected override async Task OnInitializedAsync()
-        {
+    {
-            TodoItems = await TodoAppService.GetListAsync();
+        TodoItems = await TodoAppService.GetListAsync();
-        }
+    }
-        
+    
-        private async Task Create()
+    private async Task Create()
-        {
+    {
-            var result = await TodoAppService.CreateAsync(NewTodoText);
+        var result = await TodoAppService.CreateAsync(NewTodoText);
-            TodoItems.Add(result);
+        TodoItems.Add(result);
-            NewTodoText = null;
+        NewTodoText = null;
-        }
+    }
 
-        private async Task Delete(TodoItemDto todoItem)
+    private async Task Delete(TodoItemDto todoItem)
-        {
+    {
-            await TodoAppService.DeleteAsync(todoItem.Id);
+        await TodoAppService.DeleteAsync(todoItem.Id);
-            await Notify.Info("Deleted the todo item.");
+        await Notify.Info("Deleted the todo item.");
-            TodoItems.Remove(todoItem);
+        TodoItems.Remove(todoItem);
-        }
     }
 }
 ```