ModelState.IsValid does not exclude required property

Question

Im trying to exclude a required property(Password) so the modelstate dont validate that property, but for some reason it still validate even when i try to exclude it.

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Answer 1

I had success using the following method within ASP .NET MVC 2

TryUpdateModel(user);
ModelState.Remove("Password");
if (!ModelState.IsValid) return PartialView(user);

To keep the TryUpdate from binding to certain model properties you can create an inclusion template such as the one below:

public interface IUserValidateBindable
{
    string UserId { get; set; }
}

public class User : IUserValidateBindable
{
    [Required]
    public string UserId { get; set; }
    [Required]
    public string Password { get; set; }
}

The update the TryUpodateModel call as follows:

TryUpdateModel(user);