c# - Asp.net 核心身份 "The INSERT statement conflicted with the FOREIGN KEY constraint "

我使用 ASP.NET CORE Identity 创建了 ASP.NET CORE 应用程序。
我创建种子类以保存第一次启动应用程序的新用户和角色。在这个种子类中，当我向用户添加角色时出现以下错误。



我使用以下类(class)作为身份

public class ApplicationUser : IdentityUser
{
    public int Type { get; set; }
    public int Flags { get; set; }
    public DateTime CreatedDate { get; set; }
    public DateTime LastModifiedDate { get; set; }
}

还有我的种子类

 public class DbSeeder
{
    #region Private Members
    private RvMusicalDbContext DbContext;
    private RoleManager<IdentityRole> RoleManager;
    private UserManager<ApplicationUser> UserManager;
    #endregion Private Members

    #region Constructor
    public DbSeeder(RvMusicalDbContext dbContext, RoleManager<IdentityRole> roleManager, UserManager<ApplicationUser> userManager)
    {
        DbContext = dbContext;
        RoleManager = roleManager;
        UserManager = userManager;
    }
    #endregion Constructor

    #region Public Methods
    public async Task SeedAsync()
    {
        // Create the Db if it doesn’t exist
        DbContext.Database.EnsureCreated();
        // Create default Users
        if (await DbContext.Users.CountAsync() == 0) await CreateUsersAsync();
    }
    #endregion Public Methods

    #region Seed Methods
    private async Task CreateUsersAsync()
    {
        // local variables
        DateTime createdDate = new DateTime(2016, 03, 01, 12, 30, 00);
        DateTime lastModifiedDate = DateTime.Now;
        string role_Administrators = "Administrators";
        string role_Registered = "Registered";

        //Create Roles (if they doesn't exist yet)
        if (!await RoleManager.RoleExistsAsync(role_Administrators)) await RoleManager.CreateAsync(new IdentityRole(role_Administrators));
        if (!await RoleManager.RoleExistsAsync(role_Registered)) await RoleManager.CreateAsync(new IdentityRole(role_Registered));

        // Create the "Admin" ApplicationUser account (if it doesn't exist already)
        var user_Admin = new ApplicationUser()
        {
            UserName = "Admin",
            Email = "[email protected]",
            CreatedDate = createdDate,
            LastModifiedDate = lastModifiedDate,
            Flags = 0,
            Type = 0
        };

        // Insert "Admin" into the Database and also assign the "Administrator" role to him.
        if (await UserManager.FindByIdAsync(user_Admin.Id) == null)
        {
            await UserManager.CreateAsync(user_Admin, "Pass4Admin");
            /// ERROR OCCURED HERE
            await UserManager.AddToRoleAsync(user_Admin, role_Administrators);
            // Remove Lockout and E-Mail confirmation.
            user_Admin.EmailConfirmed = true;
            user_Admin.LockoutEnabled = false;
        }

    #endregion Seed Methods


}

我想说的是角色成功保存了数据库。

请帮助解决问题。

最佳答案

在错误之前检查 UserManager.CreateAsync 调用的输出。我猜您的用户没有得到持久化，因此下一次调用失败并出现 FK 问题。

如果您正在使用默认的身份密码要求(例如我尝试使用该密码时的要求)，则会从用户创建调用中收到密码验证错误的结果。

关于c# - Asp.net 核心身份 "The INSERT statement conflicted with the FOREIGN KEY constraint "，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/41280345/