Move role management to a code behind file

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor/Pages/RoleManagement.razor

@@ -3,7 +3,6 @@
 @using Volo.Abp.Identity
 @using Microsoft.AspNetCore.Authorization
 @using Microsoft.Extensions.Localization
-@using Volo.Abp.Application.Dtos
 @using Volo.Abp.Identity.Localization
 @inject IIdentityRoleAppService RoleAppService
 @inject IStringLocalizer<IdentityResource> L
@@ -11,9 +10,9 @@
 <h1>@L["Roles"]</h1>
 
 <DataGrid TItem="IdentityRoleDto"
-          Data="roles"
-          ReadData="OnReadGridData"
-          TotalItems="totalCount"
+          Data="_roles"
+          ReadData="OnDataGridReadAsync"
+          TotalItems="_totalCount"
           ShowPager="true">
     <DataGridColumn TItem="IdentityRoleDto" Field="@nameof(IdentityRoleDto.Name)" Caption="Name" />
 </DataGrid>
@@ -22,52 +21,4 @@
 
 <label>Name:</label>
 <input type="text" name="RoleName" @bind="_newRole.Name" />
-<button class="btn btn-primary" @onclick="CreateRoleAsync">Create!</button>
-
-@code {
-
-    async Task OnReadGridData(DataGridReadDataEventArgs<IdentityRoleDto> e)
-    {
-        currentPage = e.Page - 1;
-        await GetRolesAsync();
-        StateHasChanged();
-    }
-
-    private IdentityRoleCreateDto _newRole = new IdentityRoleCreateDto();
-
-    int currentPage = 0;
-    readonly int pageSize = LimitedResultRequestDto.DefaultMaxResultCount;
-    int? totalCount = 0;
-    IReadOnlyList<IdentityRoleDto> roles = Array.Empty<IdentityRoleDto>();
-
-    protected override async Task OnInitializedAsync()
-    {
-        await GetRolesAsync();
-    }
-
-    private async Task GetRolesAsync()
-    {
-        var result = await RoleAppService.GetListAsync(
-            new PagedAndSortedResultRequestDto
-            {
-                SkipCount = currentPage * pageSize,
-                MaxResultCount = pageSize
-            });
-
-        roles = result.Items;
-        totalCount = (int?)result.TotalCount;
-    }
-
-    private async Task CreateRoleAsync()
-    {
-        await RoleAppService.CreateAsync(_newRole);
-        _newRole = new IdentityRoleCreateDto();
-        await GetRolesAsync();
-    }
-
-    private async Task DeleteRoleAsync(Guid id)
-    {
-        await RoleAppService.DeleteAsync(id);
-        await GetRolesAsync();
-    }
-}
+<button class="btn btn-primary" @onclick="CreateRoleAsync">Create!</button>

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor/Pages/RoleManagement.razor.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Blazorise.DataGrid;
+using Volo.Abp.Application.Dtos;
+using Volo.Abp.Identity;
+
+namespace MyCompanyName.MyProjectName.Blazor.Pages
+{
+    //TODO: Idea: Can we create a base class to simplify all these, like CrudPage<...>..?
+
+    public partial class RoleManagement
+    {
+        private int _currentPage;
+        private int? _totalCount;
+        private IReadOnlyList<IdentityRoleDto> _roles;
+        private IdentityRoleCreateDto _newRole;
+
+        public RoleManagement()
+        {
+            _newRole = new IdentityRoleCreateDto();
+        }
+
+        protected override async Task OnInitializedAsync()
+        {
+            await GetRolesAsync();
+        }
+
+        private async Task GetRolesAsync()
+        {
+            var result = await RoleAppService.GetListAsync(
+                new PagedAndSortedResultRequestDto
+                {
+                    SkipCount = _currentPage * LimitedResultRequestDto.DefaultMaxResultCount,
+                    MaxResultCount = LimitedResultRequestDto.DefaultMaxResultCount
+                });
+
+            _roles = result.Items;
+            _totalCount = (int?)result.TotalCount;
+        }
+
+        private async Task OnDataGridReadAsync(DataGridReadDataEventArgs<IdentityRoleDto> e)
+        {
+            _currentPage = e.Page - 1;
+            await GetRolesAsync();
+            StateHasChanged();
+        }
+        
+        private async Task CreateRoleAsync()
+        {
+            await RoleAppService.CreateAsync(_newRole);
+            _newRole = new IdentityRoleCreateDto();
+            await GetRolesAsync();
+        }
+
+        private async Task DeleteRoleAsync(Guid id)
+        {
+            await RoleAppService.DeleteAsync(id);
+            await GetRolesAsync();
+        }
+    }
+}