สอบถาม C# Web ดาวโหลดไฟล์เป็นภาษาต่างดาวใน IE *************************************

try
            {
                log.Info("Begin");
                requestData.FileName = "";
                requestData.ATTACHDOC_RUNNING_ID = ATTACHDOC_RUNNING_ID.Value;
                //requestData. = "codebase.zip";
                log.Info("Begin DownloadFile");
                fileInfo = clientDownload.DownloadFile(requestData);
                log.Info("End DownloadFile");

                Response.BufferOutput = false;   // to prevent buffering 
                byte[] buffer = new byte[6500];
                int bytesRead = 0;

                System.Web.HttpContext.Current.Response.Clear();
                System.Web.HttpContext.Current.Response.ClearContent();
                System.Web.HttpContext.Current.Response.ClearHeaders();
                System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition",
                            "attachment; filename=" + fileInfo.FileName);
                System.Web.HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Unicode;
                System.Web.HttpContext.Current.Response.ContentType = "application/octet-stream";
                System.Web.HttpContext.Current.Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());

                bytesRead = fileInfo.FileByteStream.Read(buffer, 0, buffer.Length);

                while (bytesRead > 0)
                {
                    // Verify that the client is connected.
                    if (Response.IsClientConnected)
                    {

                        Response.OutputStream.Write(buffer, 0, bytesRead);
                        // Flush the data to the HTML output.
                        Response.Flush();

                        buffer = new byte[6500];
                        bytesRead = fileInfo.FileByteStream.Read(buffer, 0, buffer.Length);

                    }
                    else
                    {
                        bytesRead = -1;
                    }
                }

                log.Info("End");
            }
            catch (Exception ex)
            {
                // Trap the error, if any.
                System.Web.HttpContext.Current.Response.Write("Error : " + ex.Message);
            }
            finally
            {
                Response.Flush();
                Response.Close();
                Response.End();
                System.Web.HttpContext.Current.Response.Close();
            }

            return Content("");