how to check whether this email id is valid or not?need code

Check this link:-

 

1.     http://asp-net-example.blogspot.in/2009/02/aspnet-regularexpressionvalidator.html

Web Services or WCF?If you are exposing your WCF,then you need fault contract.If you are consuming,you need to learn callback Contract.

And if its simple method to check in your WCF,you can use operation Contract.

I KNOW THIS CODE.IF THIS REGULAR EXPERSSION SATIFIES.THEN NOT VALID I WANT CHECK IT USIN WEBSERVIECS

public static class TestEmail

{

public const string MatchEmailPattern = @"^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@" + @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])\." + @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|" + @"([a-zA-Z0-9]+[\w-]+\.)+[a-zA-Z]{1}[a-zA-Z0-9-]{1,23})$";

 

public static bool IsEmail(string email)

{

   if (email != null) return Regex.IsMatch(email, MatchEmailPattern); else return false;

}

}