无法列出所有角色

Question

我无法列出我的 asp.net 核心 6 mvc 网络应用程序中的所有角色。在浏览器中输入 url 路径时 https://Localhost:44319/Admin/Role 我收到 404 错误。我按照相同的步骤列出所有没有问题的用户，所以我很困惑为什么它不适用于角色。如果可以查看下面的代码，我们将不胜感激。

using System.ComponentModel.DataAnnotations;

namespace MyWebApp.Areas.Admin.ViewModels
{
    public class RoleVM
    {
        [Required]
        [Display(Name = "Role")]
        public string? RoleName { get; set; }
    }
}

namespace MyWebApp.Areas.Admin.Controllers
{
    public class RoleController : Controller
    {
        private readonly RoleManager<IdentityRole> _roleManager;
        
        public RoleController(RoleManager<IdentityRole> roleManager)
        {
            _roleManager = roleManager;
        }

        public IActionResult Index()
        {
            var roles = _roleManager.Roles;
            return View(roles);
        }
    }
}

@model IEnumerable<Microsoft.AspNetCore.Identity.IdentityRole>

@{
    ViewData["Title"] = "All Roles";
}

<div class="table-responsive">
    <table class="table table-hover text-secondary">
        <thead class="text-dark">
            <tr>
                <th>Role</th>
                <th></th>
            </tr>
        </thead>
        <tbody>
            @foreach (var role in Model)
            {
                <tr>
                    <td>@role</td>
                    <td>
                        <partial name="_RUDButtonsPartial" model="@role.Id">
                    </td>
                </tr>
            }
        </tbody>
    </table>
</div>

builder.Services.AddIdentity<ApplicationUser, IdentityRole>(options =>
{
    options.User.RequireUniqueEmail = true;
    options.Lockout.MaxFailedAccessAttempts = 5;
    options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(15);
}).AddEntityFrameworkStores<ApplicationDbContext>();

app.UseEndpoints(endpoints =>
{
    endpoints.MapControllerRoute(
      name: "Admin",
      pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}"
    );

    app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}"
    );

});

Answer 1

在 RoleController 中，添加 [Area("admin")]

[Area("admin")]
public class RoleController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}

结果：

无法列出所有角色

Unable to List all Roles

asp.net-mvc

asp.net-core

.net-core