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

    public class RegistrationViewModel
    {
      // Code removed for brevity
      [Required(ErrorMessage = "Email is required")]
      [EmailAddress(ErrorMessage = "Provide a valid email address")]
      public string Email { get; set; }
      [Required(ErrorMessage = "Email is required")]
      [EmailAddress(ErrorMessage = "Provide a valid email address")]
      public string ConfirmEmail { get; set; }
    }

We have looked, exhaustively, at EmailAddress field validations; let's explore the Compare validation in the next section.