asp.net mvc dataannotation validating url

Question

can some one tell me how can i validate a url like http://www.abc.com

Answer 1

Here is proper validation attribute code used in prod system:

[AttributeUsage(AttributeTargets.Property, AllowMultiple = false)]
public class UriValidation : ValidationAttribute
{
    public override bool IsValid(object value)
    {
        if (value == null || value.ToString() == string.Empty)
        {
            return true;
        }

        try
        {
            Uri result;
            if (Uri.TryCreate(value.ToString(), UriKind.RelativeOrAbsolute, out result))
            {
                if (result.Scheme.StartsWith("http") || result.Scheme.StartsWith("https"))
                {
                    return true;
                }
            }
        }
        catch
        {
            return false;
        }

        return false;
    }
}