无法从ASP.NET Core 2.1控制器获取IdentityUser数据

Question

我正在ASP.NET Core 2.1中开发应用程序。 我正在将Identity与内置的用户帐户一起使用。 现在，我试图在此应用程序中开发一个用户维护模块。 我无法获取控制器内部的数据。 这是我的代码：

ApplicationDbContext.cs ：

public class ApplicationDbContext : IdentityDbContext
{
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
        : base(options)
    {
    }

    public DbSet<ApplicationUser> ApplicationUsers { get; set; }

}

Startup.cs ：

public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<CookiePolicyOptions>(options =>
        {
            // This lambda determines whether user consent for non-essential cookies is needed for a given request.
            options.CheckConsentNeeded = context => true;
            options.MinimumSameSitePolicy = SameSiteMode.None;
        });

        services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlServer(
                Configuration.GetConnectionString("DefaultConnection")));
        services.AddIdentity<IdentityUser,IdentityRole>(config => {
            config.SignIn.RequireConfirmedEmail = true;
        })
        .AddEntityFrameworkStores<ApplicationDbContext>()
        .AddDefaultUI()
        .AddDefaultTokenProviders();

        services.AddMemoryCache();
        services.AddSession();

        services.AddMvc()
            .SetCompatibilityVersion(CompatibilityVersion.Version_2_1)
            .AddSessionStateTempDataProvider();

        services.AddSingleton<IEmailSender, EmailSender>();
    }

ApplicationUser.cs ：

public class ApplicationUser : IdentityUser
{
    [Required]
    public string FirstName { get; set; }

    [Required]
    public string Name { get; set; }
}

Index.cshtml ：

@model IEnumerable<TestIdentity.Models.ApplicationUser>
@{
    ViewData["Title"] = "Index";
}
<h2>Application users</h2>
@foreach (var item in Model)
{
    <p>@item.Name</p>
}

ApplicationUsersController.cs ：：

public class ApplicationUsersController : Controller
{
    private readonly ApplicationDbContext _context;

    public ApplicationUsersController(ApplicationDbContext context)
    {
        _context = context;
    }

    // GET: Administrator/ApplicationUsers
    public async Task<IActionResult> Index()
    {
        return View(await _context.ApplicationUsers.ToListAsync());
    }
}

_context.ApplicationUsers.ToListAsync()不返回任何结果，尽管我的AspNetUsers表中有数据。

Answer 1

如果您想使用自定义ApplicationUser作为Identity而不是默认IdentityUser需要在声明模型后进行一些更改。

1.在dbContext中：

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>

2，在startup.cs中

services.AddIdentity<ApplicationUser,IdentityRole>(config => {
        config.SignIn.RequireConfirmedEmail = true;
    })
...

3.在您的/Shared/_LoginPartial.cshtml中

@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager

Answer 2

IdentityUser不是您的dbContext的一部分。 您需要使用UserManager<IdentityUser>代替。

您的ApplicationUsersController类应如下所示

public class ApplicationUsersController : Controller
{
    private readonly ApplicationDbContext _context;
    private readonly UserManager<IdentityUser> _userManager;

    public ApplicationUsersController(ApplicationDbContext context,
                                      UserManager<IdentityUser> userManager;)
    {
        _context = context;
        _userManager = userManager;
    }

    // GET: Administrator/ApplicationUsers
    public async Task<IActionResult> Index()
    {
        return View(await _userManager.Users.Cast<ApplicationUser>().ToListAsync());
    }
}