我正在尝试自定义ASP.NET身份3，以便它使用整数键：
public class ApplicationUserLogin : IdentityUserLogin<int> { }
public class ApplicationUserRole : IdentityUserRole<int> { }
public class ApplicationUserClaim : IdentityUserClaim<int> { }
public sealed class ApplicationRole : IdentityRole<int>
{
public ApplicationRole() { }
public ApplicationRole(string name) { Name = name; }
}
public class ApplicationUserStore : UserStore<ApplicationUser,ApplicationRole,ApplicationDbContext,int>
{
public ApplicationUserStore(ApplicationDbContext context) : base(context) { }
}
public class ApplicationRoleStore : RoleStore<ApplicationRole,int>
{
public ApplicationRoleStore(ApplicationDbContext context) : base(context) { }
}
public class ApplicationUser : IdentityUser<int>
{
}
public sealed class ApplicationDbContext : IdentityDbContext<ApplicationUser,int>
{
private static bool _created;
public ApplicationDbContext()
{
// Create the database and schema if it doesn't exist
if (!_created) {
Database.AsRelational().Create();
Database.AsRelational().CreateTables();
_created = true;
}
}
}
这可以编译好，但是会抛出一个运行时错误：
System.TypeLoadException
GenericArguments[0],‘TeacherPlanner.Models.ApplicationUser’,on ‘Microsoft.AspNet.Identity.EntityFramework.UserStore`4[TUser,TRole,TContext,TKey]’ violates the constraint of type parameter ‘TUser’.
UserStore的签名是：
public class UserStore<TUser,TKey> where TUser : Microsoft.AspNet.Identity.EntityFramework.IdentityUser<TKey> where TRole : Microsoft.AspNet.Identity.EntityFramework.IdentityRole<TKey> where TContext : Microsoft.Data.Entity.DbContext where TKey : System.IEquatable<TKey>
ApplicationUser正是一个IdentityUser< int>。这不是它在寻找什么吗？
解决方法
进入这个问题。这是在startup.cs文件中崩溃。
变
变
services.AddIdentity<ApplicationUser,ApplicationIdentityRole>()
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();
至
services.AddIdentity<ApplicationUser,ApplicationIdentityRole>()
.AddEntityFrameworkStores<ApplicationDbContext,int>()
.AddDefaultTokenProviders();
宣布关键类型似乎超越了崩溃
