从Identity.EntityFrameworkIdentityUser 中排除属性

I have the following class

我有以下课程

public class AppUser : Microsoft.AspNet.Identity.EntityFramework.IdentityUser<int, AppLogin, AppUserRole, AppClaim>
{
    public AppUser()
        : base()
    {
    }

    public System.DateTime DateCreated { get; set; }
    public DateTime? LastActivityDate { get; set; }
}
public c