抓取 try cache Exception 錯誤編號 方法如下：

                try
                {
                }
                catch (Exception ex)
                {
                    int ErrorCode = 0;
                    Win32Exception W32EX = ex as Win32Exception;
                    if (W32EX == null) W32EX = ex.InnerException as Win32Exception;
                    if (W32EX != null) ErrorCode = W32EX.ErrorCode;
                    Console.WriteLine(ErrorCode.ToString());
                }