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POResponse.WriteFile writing the content twice
 

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  1. POResponse.WriteFile writing the content twice
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    <p>Here is my code..</p> <pre><code> string attachment = "attachment; filename=Call-Details-Report-" + startDate.SelectedDate.Value.ToString("MM-dd-yyyy") + ".csv"; Response.Clear(); Response.ClearHeaders(); Response.ClearContent(); Response.AddHeader("Content-Disposition", attachment); Response.ContentType = "text/csv"; Response.AddHeader("Pragma", "public"); Response.WriteFile(downloadLocation+"\\"+fileName); Response.End(); </code></pre> <p>I'm using the above code to download a csv file from a location.But surprisingly the contents gets written twice or some times thrice into the file that i download though actually it isn't so with the file on server.I'm writing my code in c#. The above piece of code works perfectly in local machine,but the issue is in Production server.</p> <p>Here is my complete Method</p> <pre><code> private void DownloadReport(string query) { string downloadFolderPath = ""; string filePath = ""; string dbAndApplicationServerStatus = ConfigurationManager.AppSettings["SameDBAndApplicationServer"] != null ? ConfigurationManager.AppSettings["SameDBAndApplicationServer"] : "1"; if (dbAndApplicationServerStatus == "0") { Log.Write("So the DB And Application are on differrent servers,hence trying to read Download folder path on DB Server...."); downloadFolderPath = ConfigurationManager.AppSettings["ReportDownloadLocation"] != null ? ConfigurationManager.AppSettings["ReportDownloadLocation"] : "-1"; Log.Write("Download Path is " + downloadFolderPath); } else { Log.Write("So the DB and Application and Db are on same server......"); downloadFolderPath = Server.MapPath("Download"); downloadFolderPath = downloadFolderPath.Replace("\\", "//"); if (!Directory.Exists(downloadFolderPath)) { Directory.CreateDirectory(downloadFolderPath); } Log.Write("Download Path is " + downloadFolderPath); } string status=""; StringBuilder headerQuery = new StringBuilder(); StringBuilder rowQuery = new StringBuilder(); StringBuilder sqlQuery = new StringBuilder(); filePath = downloadFolderPath; string folderName = DateTime.Now.ToString("MM-dd-yyyy"); string timeStamp = DateTime.Now.ToString("MM-dd-yy-HH-mm-ss"); string fileName = "Call-Details-Report-" + startDate.SelectedDate.Value.ToString("MM-dd-yyyy") + "_" + timeStamp + ".csv"; filePath = filePath + "/" + fileName; bool commaRequired = false; sqlQuery.Append("SELECT * INTO OUTFILE '"); sqlQuery.Append(filePath); sqlQuery.Append("' FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"' LINES TERMINATED BY '\n' FROM ("); headerQuery.Append("Select "); rowQuery.Append("(Select "); #region Creating Query /*Sql Query is Created in this region*/ #endregion if (!CdrSearch.WriteReportToFile(sqlQuery.ToString(),out status)) { Log.Write("Failed to generate the file to download......"); WebPagesHelper.ShowMessage(ref lblMessage, WebPagesHelper.MessageType.Message, status); } else { Log.Write("Succesfully generated file to Download"); string downloadLocation = Server.MapPath("Download"); if (dbAndApplicationServerStatus == "0") { WebClient webClient = new WebClient(); string path = ConfigurationManager.AppSettings["DownloadURL"] != null ? ConfigurationManager.AppSettings["DownloadURL"].ToString() : ""; if (!Directory.Exists(downloadLocation)) { Directory.CreateDirectory(downloadLocation); } if (File.Exists(downloadLocation + "\\" + fileName)) { File.Delete(downloadLocation + "\\" + fileName); } webClient.DownloadFile(path + fileName, downloadLocation + "\\" + fileName); } Log.Write("Configured Download Location on Application" + downloadLocation); string attachment = "attachment; filename=Call-Details-Report-" + startDate.SelectedDate.Value.ToString("MM-dd-yyyy") + ".csv"; Response.Clear(); Response.ClearHeaders(); Response.ClearContent(); Response.AddHeader("Content-Disposition", attachment); Response.ContentType = "text/csv"; Response.AddHeader("Pragma", "public"); Log.Write(downloadLocation + "\\" + fileName); Response.WriteFile(downloadLocation+"\\"+fileName); Response.SetCookie(new HttpCookie("DStatus", "Completed")); Response.End(); } } </code></pre> <p>And the above method is called only once straight away on click of a button,so no question of any looping here.</p>
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    1. COCheck if method with this body is called more than once. I think it is...
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      1. USTomas Voracek
    2. COI think you have shown the wrong code snippet. It's the code that writes the file in `downloadLocation` that is probably faulty.
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      1. USDarin Dimitrov
    3. CO@DarinDimitrov Umm no it writes the contents of the specified file directly to an HTTP response output stream as a file block.
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      1. UScarny666
 

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