How to: Verify That Strings are in Valid E-Mail Format

bool IsValidEmail(string strIn){
// Return true if strIn is in valid e-mail format.
return Regex.IsMatch(strIn, @”^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$”);
}

Operators in brief

Escaping Characters

Ordinary characters, other than the ones in the table below, match themselves. That is, an “a” in a regular expression specifies that input should match an “a”.

Another significant difference in writing handwriting regular expressions is that you can only escape a limited set of characters within a regular expression. The following table outlines the allowed set of characters that can be escaped. Any other attempt to escape a character will result in an error being thrown by the recognizer.

• Misc