ASP.NET MVC data annotations client side validation with inherited RegularExpressionAttribute

user_54626 0
Viewed 5655

To keep my model validation clean I would like to implement my own validation attributes, like PhoneNumberAttribute and EmailAttribute. Some of these can favorably be be implemented as simple classes that inherit from RegularExpressionAttribute.

However, I noticed that doing this breaks client side validation of these attributes. I am assuming that there is some kind of type binding that fails somewhere.

Any ideas what I can do to get client side validation working?

Code example:

public sealed class MailAddressAttribute : RegularExpressionAttribute
{
    public MailAddressAttribute()
        : base(@"^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$")
    {
    }
}
data-annotations client-side-validation asp.net-mvc asp.net regex
2 Answers

extending of the right answer

public class EmailAttribute : RegularExpressionAttribute
{
    static EmailAttribute()
    {
        DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(EmailAttribute), typeof(RegularExpressionAttributeAdapter));
    }

    public EmailAttribute()
        : base(@"^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$") //^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$
    {

    }
}
user_2788220
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