Question

I am trying to create a user registration page using MVC 3, so that I can better understand the process of how it works, what’s going on behind the scenes etc. I am running into some issues when trying to use [Compare] to check to see that the user entered the same password twice.

I tried adding the ComparePassword field to my user model first, and found that would not work the way I wanted as I did not have the field in the database, so the obvious answer was to create a View Model using the same information including the ComparePassword field.

So I now have created a User model and a RegistrationViewModel, however it appears that the [Compare] on the password is not returning anything, for instance no matter what I put in the two boxes, when I click create it gives no error, which seems to me to mean it was successfully validated.

I am not sure what I am doing or not doing to make this work properly. I have tried updating the jQuery.Validate to the newest version as there were some bugs reported in older version, this has not helped my efforts.

Below is all of the code that I am working with.

    public class RegistrationViewModel
    {
        [Required]
        [StringLength(15, MinimumLength = 3)]
        [Display(Name = "User Name")]
        [RegularExpression(@"(\S)+", ErrorMessage = " White Space is not allowed in User Names")]
        [ScaffoldColumn(false)]
        public String Username { get; set; }

        [Required]
        [StringLength(15, MinimumLength = 3)]
        [Display(Name = "First Name")]
        public String firstName { get; set; }

        [Required]
        [StringLength(15, MinimumLength = 3)]
        [Display(Name = "Last Name")]
        public String lastName { get; set; }

        [Required]
        [Display(Name = "Email")]
        public String email { get; set; }

        [Required]
        [Display(Name = "Password")]
        [DataType(DataType.Password)]
        public String password { get; set; }

        [Required]
        [DataType(DataType.Password)]
        [Display(Name = "Re-enter Password")]
        [Compare("Password", ErrorMessage = "Passwords do not match.")]
        public String comparePassword { get; set; }
    }

Answer 1

Is the CompareAttribute case-sensitive? I see your referencing “Password” in the attribute but your property is declared as “password”.