使用 ASP .NET Core Identity 和 EntityFrameworkCore 注册新用户时出现 InvalidOperationException

Question

我正在关注 documentation for using Identity 并正在尝试注册一个新用户（执行注册操作），但失败并出现以下错误：

InvalidOperationException: Cannot create a DbSet for 'ApplicationUser' because this type is not included in the model for the context.

启动：

services.AddIdentity<ApplicationUser, IdentityRole>(options =>
{
    //password options
    options.Password.RequireDigit = false;
    // ...
})

我正在使用标准的 ApplicationUser：

public class ApplicationUser : IdentityUser
{
}

在 AccountController 中注册操作：

public async Task<IActionResult> Register(RegisterViewModel viewModel)
{
    if (ModelState.IsValid)
    {
        var user = new ApplicationUser { UserName = viewModel.UserName, Email = viewModel.Email };
        var result = await _userManager.CreateAsync(user, viewModel.Password); //<-- Exception happens here
        if (result.Succeeded)
        {
            await _signInManager.SignInAsync(user, isPersistent: false);
            _logger.LogInformation(3, "User created a new account with password.");
            return RedirectToAction(nameof(HomeController.Index), "Home");
        }

        string errorData = "";
        foreach (var error in result.Errors)
        {
            errorData += error.Description + '\n';
        }
        StoreErrorMessage("Failed to create the user!", errorData);
    }

    return View(viewModel);
}

我已经尝试过以下方法：

将 DbSet<ApplicationUser> 添加到 AplicationContext
我确实通过 dotnet ef

Answer 1

我发现了问题。我的 ApplicationContext 继承自 DbContext。我将其更改为 IdentityDbContext<ApplicationUser> 并且有效。

Answer 2

创建继承 IdentityDbContext 的新上下文 class。

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

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);
        // Customize the ASP.NET Identity model and override the defaults if needed.
        // For example, you can rename the ASP.NET Identity table names and more.
        // Add your customizations after calling base.OnModelCreating(builder);
    }
}

并在 startup.cs 文件中添加以下代码

services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlServer(connection));

这将有助于您使用数据库优先方法。

使用 ASP .NET Core Identity 和 EntityFrameworkCore 注册新用户时出现 InvalidOperationException

InvalidOperationException when registering a new user with ASP .NET Core Identity and EntityFrameworkCore

c#

entity-framework

asp.net-core-1.0

asp.net-core-identity