FROM : /ilookbo/p/4828722.html
/// <summary>/// 判断输入的字符串是否只包含数字和英文字母/// </summary>/// <param name="input"></param>/// <returns></returns>public static bool IsNumAndEnCh(string input){string pattern = @"^[A-Za-z0-9]+$";Regex regex = new Regex(pattern);return regex.IsMatch(input);}