public static bool IsValidEmail(string email)
{
//regular expression pattern for valid email
//addresses, allows for the following domains:
//com,edu,info,gov,int,mil,net,org,biz,name,museum,coop,aero,pro,tv
const string pattern = @"^[-_a-zA-Z0-9][-._a-zA-Z0-9]*@[-._a-zA-Z0-9]+(\.[-._a-zA-Z0-9]+)*\.(com|edu|info|gov|int|mil|net|org|biz|name|museum|coop|aero|pro|tv|[a-zA-Z]{2})$";
//Regular expression object
Regex check = new Regex(pattern, RegexOptions.IgnorePatternWhitespace);
//boolean variable to return to calling method
bool valid = false;
//make sure an email address was provided
if (string.IsNullOrEmpty(email))
{
valid = false;
}
else
{
//use IsMatch to validate the address
valid = check.IsMatch(email);
}
//return the value to the calling method
return valid;
}
