Question

I have a compare validation for a password – confirm password fields and also a server validation to check if the password fits with a minimum number of characters.

View:

@Html.PasswordFor(model => model.password)
@Html.PasswordFor(model => model.repeatPassword)

Model:

    public class Model_Clerk
    {            
        public int clerkID { get; set; }    

        public string password { get; set; }

        [Compare("password", ErrorMessage = "Error comparing password and password confirm values")]                        
        public string repeatPassword { get; set; }

    }

Controller action method:

    public ActionResult SaveClerk(Model_Clerk model)
    {            
        //Password minimum lenght
        if (!string.IsNullOrEmpty(model.password) && model.password.Trim().Length < 5)
        {
            ModelState.AddModelError(model.password, "Password must be at least 5 characters long");                 
        }

        if (ModelState.IsValid)
        {
            //Save logic here...
        }
        else
        {
            return PartialView("EditClerks", model);
        }
    }

When the server validation is executed the warning message appears correctly, and after that the compare validation will not work anymore. Any idea?

Answer 1

From our comments, I think that actually the best solution would be to write your own DataAnnotation.

Something like [CompareIf("password", ErrorMessage = "Error comparing password and password confirm values")]

Your DataAnnotation Code would have to check to see if the Password is not empty and valid, and then compare the two values.