ASP.NET mvc 2 - How to add a "confirm your e-mail address" field?

Question

Let's say I have a model that looks like this:

public class MyModel
{
    [DisplayName("Email:")]
    [Required(ErrorMessage = "Email is required")]
    [Email(ErrorMessage = "Email is invalid")]
    public string Email { get; set; }
}

In ASP.NET MVC 2, I'd render the text box and validation like so:

<%=Html.LabelFor(x => x.Email)%>
<%=Html.TextBoxFor(x => x.Email)%>
<%=Html.ValidationMessageFor(x => x.Email)%>

How do I add a second field to allow the user to confirm their email address using the display name and validation from the model's property?

Answer 1

Decorate your Class with the following Attribute:

    [PropertiesMustMatch("Email", "ConfirmEmail", ErrorMessage = "The Email Address and confirmation Email Address do not match.")]
    public class MyModel
    {
        [DisplayName("Email:")]
        [Required(ErrorMessage = "Email is required")]
        [Email(ErrorMessage = "Email is invalid")]
        public string Email { get; set; }

        [DisplayName("Confrim Email:")]
        [Required(ErrorMessage = "Email is required")]
        [Email(ErrorMessage = "Email is invalid")]
        public string ConfirmEmail { get; set; }
    }

You can get the PropertiesMustMatch Helper class here: http://www.polemus.net/2010/09/mvc-confirm-username-password.html

You will also notice that if you create a new MVC2 Project the AccountModel has an example of this.