用戶單擊按鈕后，我希望下載文件。我嘗試了以下似乎可行的方法，但并非沒(méi)有引發(fā)不可接受的異常（ThreadAbort）。    System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;    response.ClearContent();    response.Clear();    response.ContentType = "text/plain";    response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + ";");    response.TransmitFile(Server.MapPath("FileDownload.csv"));    response.Flush();    response.End();