下面是email正则表达式:
Ex:
string pattern = @"^[a-z][a-z|0-9|]*([_][a-z|0-9]+)*([.][a-z|0-9]+([_][a-z|0-9]+)*)?
@[a-z][a-z|0-9|]*\.([a-z][a-z|0-9]*(\.[a-z][a-z|0-9]*)?)$";
System.Text.RegularExpressions.Match match = Regex.Match(txtEmailChecking.Text.Trim(),
pattern,RegexOptions.IgnoreCase);
if(match.Success)
MessageBox.Show("Success","Checking");
else
MessageBox.Show("Fail","Checking");