//定義Md5密碼服務類 MD5CryptoServiceProvider mdcpValu = new MD5CryptoServiceProvider(); //將傳入的值轉換成UTF8格式。便於加密時的格式統一 byte[] bDestination = System.Text.Encoding.UTF8.GetBytes(asDestination); //加密 byte[] bDestinationMd5 = mdcpValu.Co