We will update our blogging system model to accommodate the Compare field validation in the View model:

    public class LoginViewModel
    {
      [Required(ErrorMessage = "Username is required")]
      public string Username { get; set; }
      [Required(ErrorMessage = "Password is required")]
      public string Password { get; set; }
      [Required(ErrorMessage = "ConfirmPassword is required")]
      [Compare("Password", ErrorMessage = "Password does not match")]
      public string ConfirmPassword { get; set; }
    }

We have looked, exhaustively, at the Compare field validations. Let's explore the Url validation in the next section.