emailid validation in this formate "[email protected]"

A nice resource, which u can even use in your future....

http://regexlib.com/CheatSheet.aspx?AspxAutoDetectCookieSupport=1

http://regexlib.com/

Regex Cheat Library. U can get anything here that u want.
Hope this helps u.
Thanks.

Hi KRayudu,

  Regular expression are powerful tools to check whether string match the case or not.
I had found a good article on Regular Expression for Email address checking. Having sample code here.

public static class TestEmail
{
    ///

    /// Regular expression, which is used to validate an E-Mail address.
    ///

    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-Z]+[\w-]+\.)+[a-zA-Z]{2,4})$";
    ///

    /// Checks whether the given Email-Parameter is a valid E-Mail address.
    ///

    /// Parameter-string that contains an E-Mail address.
    /// True, when Parameter-string is not null and
    /// contains a valid E-Mail address;
    /// otherwise false.
    public static bool IsEmail(string email)
    {
        if (email != null)
            return Regex.IsMatch(email, MatchEmailPattern);
        else
            return false;
    }
}

Link to this article is "Email Validation using Regular Expression"

Thanks & Regards
----------------------
Chintan Rathod