ASP.NET 核心实体错误：实体类型"AppUserLogin"是使用单个键属性定义的，但 2 个值传递给了"DbSet.Find"方法

Question

>我覆盖了身份类：

 [Table("Roles")]
    public partial class AppRole : IdentityRole<int, AppUserRole, AppRoleClaim>
    {
    }
    [Table("RoleClaims")]
    public partial class AppRoleClaim : IdentityRoleClaim<int>
    {
    }
    [Table("Users")]
    public partial class AppUser : IdentityUser<int, AppUserClaim, AppUserRole, AppUserLogin>
    {       
    }
    [Table("UserClaims")]
    public partial class AppUserClaim : IdentityUserClaim<int>
    {
    }
    [Table("UserLogins")]
    public partial class AppUserLogin : IdentityUserLogin<int>
    {
        [Key]
        [Required]
        public int Id { get; set; }
    }
    [Table("UserRoles")]
    public partial class AppUserRole : IdentityUserRole<int>
    {
    }
    [Table("UserTokens")]
    public partial class AppUserToken : IdentityUserToken<int>
    {
        [Key]
        [Required]
        public int Id { get; set; }
    }
    public class AppRoleManager : RoleManager<AppRole>
    {
        public AppRoleManager(IRoleStore<AppRole> store, IEnumerable<IRoleValidator<AppRole>> roleValidators, ILookupNormalizer keyNormalizer, IdentityErrorDescriber errors, ILogger<RoleManager<AppRole>> logger, IHttpContextAccessor contextAccessor) : base(store, roleValidators, keyNormalizer, errors, logger, contextAccessor)
        {
        }
    }
    public class AppRoleStore : RoleStore<AppRole, AppDbContext, int, AppUserRole, AppRoleClaim>
    {
        public AppRoleStore(AppDbContext context, IdentityErrorDescriber describer = null) : base(context, describer)
        {
        }
        protected override AppRoleClaim CreateRoleClaim(AppRole role, Claim claim)
        {
            return new AppRoleClaim(role, claim);
        }
    }
    public class AppSignInManager : SignInManager<AppUser>
    {
        public AppSignInManager(UserManager<AppUser> userManager, IHttpContextAccessor contextAccessor, IUserClaimsPrincipalFactory<AppUser> claimsFactory, IOptions<IdentityOptions> optionsAccessor, ILogger<SignInManager<AppUser>> logger) : base(userManager, contextAccessor, claimsFactory, optionsAccessor, logger)
        {
        }
    }
    public class AppUserManager : UserManager<AppUser>
    {
        public AppUserManager(IUserStore<AppUser> store, IOptions<IdentityOptions> optionsAccessor, IPasswordHasher<AppUser> passwordHasher, IEnumerable<IUserValidator<AppUser>> userValidators, IEnumerable<IPasswordValidator<AppUser>> passwordValidators, ILookupNormalizer keyNormalizer, IdentityErrorDescriber errors, IServiceProvider services, ILogger<UserManager<AppUser>> logger) : base(store, optionsAccessor, passwordHasher, userValidators, passwordValidators, keyNormalizer, errors, services, logger)
        {
            var LoginStore = Store;
        }
    }
    public class AppUserStore : UserStore<AppUser, AppRole, AppDbContext, int, AppUserClaim, AppUserRole, AppUserLogin, AppUserToken, AppRoleClaim>
    {
        public AppUserStore(AppDbContext context, IdentityErrorDescriber describer = null) : base(context, describer)
        {
        }
        protected override AppUserClaim CreateUserClaim(AppUser user, Claim claim)
        {
            return new AppUserClaim(user, claim);
        }
        protected override AppUserLogin CreateUserLogin(AppUser user, UserLoginInfo login)
        {
            return new AppUserLogin(user, login);
        }
        protected override AppUserRole CreateUserRole(AppUser user, AppRole role)
        {
            return new AppUserRole(user, role);
        }
        protected override AppUserToken CreateUserToken(AppUser user, string loginProvider, string name, string value)
        {
            return new AppUserToken(user, loginProvider, name, value);
        }
    }

我想为谷歌使用外部登录，但是当我打电话给await UserManager.FindByLoginAsync(info.LoginProvider, info.ProviderKey);时出现错误：

实体类型"AppUserLogin"是使用单个键属性定义的，但 2 个值被传递给 'DbSet.Find' 方法。

我正在遵循教程 openiddict 和 ASP.NET 核心和 Angular 2，但我很确定这个错误与这 2 个教程没有任何关系。我认为我的代码不起作用，因为我更改了用户登录表的 TKey 表：public partial class AppUserLogin : IdentityUserLogin<int> 。即使使用单个键属性定义搜索也不会产生任何结果。

Answer 1

解决方案在DbContext.OnModelCreating方法中。我从：

    modelBuilder.Entity<AppUserLogin>(entity =>
    {
        entity
        .HasKey(u => u.Id);
        entity.Property(p => p.Id)
        .ValueGeneratedOnAdd();
    });

自：

    modelBuilder.Entity<AppUserLogin>(entity =>
    {
        entity
        .HasKey(u => u.Id);
        entity.Property(p => p.Id)
        .ValueGeneratedOnAdd();
        entity
        .HasKey(u => new { u.LoginProvider, u.ProviderKey });
    });

它有效。