private void AddConfirmPasswordValidation(IValidateableObject <string> passwordEntered)
 {
     ConfirmPassword.ValidationsClear();
     ConfirmPassword.ValidationsRules.AddRange(new List <IValidationRule <string> >
     {
         new IsNotNullOrEmptyRule <string> {
             ValidationMessage = "A Password is required."
         },
         new CompareValidationRule <string> {
             ValidationMessage = "The Passwords are not the same.", CompareToString = passwordEntered.Value
         }
     });
 }