Thread was being aborted

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Hello everyone,
Following is my code to download the pdf file using its path.File is stored in folder in my solution but it throw exception at Response.End(); "Thread was being aborted".
Can any one help me please..
Thanx in advance .

C#

string id;
     string idd;
     string FileName;

     public string Doc_File = "application/ms-word/notepad";
     public string Docx_File = "application/ms-word";
     public string MS_EXCEl_xls_File = "application/vnd.ms-excel";
     public string MS_EXCEl_xlsx_File = "application/vnd.ms-excel";
     public string JPG_Image_File = "image/jpg";
     public string PNG_Image_File = "image/png";
     public string GIF_Image_File = "image/gif";
     public string PDF_File = "application/pdf";
     protected void Page_Load(object sender, EventArgs e)
     {

         if (!IsPostBack)
         {
             BindGrid();
             btnBrows.Attributes.Add("onclick", "document.getElementById('" + UpResume.ClientID + "').click();");
         }
         id = string.Empty;
         try
         {
             id = Session["BID"].ToString();
         }
         catch (Exception)
         {

         }
         if (IsPostBack && UpResume.PostedFile != null && UpResume.HasFile)
         {
             try
             {
                 if ((UpResume.PostedFile != null))
                 {
                     FileName = Path.GetFileName(UpResume.PostedFile.FileName);
                     Session["BrochureName"] = FileName;
                     try
                     {
                         if (string.IsNullOrEmpty(FileName))
                            FileName= Session["FileName"].ToString() ;
                     }
                     catch (Exception)
                     {
                     }
                     //Save files to images folder
                     string strFileType = System.IO.Path.GetExtension(UpResume.FileName).ToString().ToLower();
                     try
                     {
                         if (string.IsNullOrEmpty(strFileType))
                             strFileType = Session["strFileType"].ToString();
                     }
                     catch (Exception)
                     {
                     }
                     string contenttype = string.Empty;
                     try
                     {
                         //string filetype = Session["strFileType"].ToString();
                         if (strFileType != null)
                         {
                             switch (strFileType)
                             {
                                 case ".doc":
                                     contenttype = "application/ms-word";
                                     break;
                                 case ".docx":
                                     contenttype = "application/ms-word";
                                     break;
                                 case ".pdf":
                                     contenttype = "application/pdf";
                                     break;
                             }
                             if (string.IsNullOrEmpty(contenttype))
                             {
                                 lblTitleInfo.Text = "ERROR...!!!!";
                                 lblMessage.Text = "File format not supported";
                                 lblMessage.ForeColor = System.Drawing.Color.Red;
                                 MsgPopUpInfo.Show();
                             }
                             else
                             {
                                 Session["extension"] = contenttype;
                             }
                         }
                     }
                     catch(Exception)
                     {

                     }

                     if (string.IsNullOrEmpty(id))
                     {
                         DataTable dtH = ObjMaster.FetchData(Transaction.getBrochuresidentity);
                         if (dtH.Rows.Count > 0)
                         {

                             idd = dtH.Rows[0]["id"].ToString();
                             string filePath = Server.MapPath(("../Brochure/" + idd + FileName));
                             UpResume.SaveAs(Server.MapPath("../Brochure/" + idd + FileName));

                             Session["PostedFile"] = UpResume.PostedFile;
                             Session["strFileType"] = strFileType;
                             // Session["FileName"] = lblUpPhoto.Text;
                             Session["FileName"] = "../Brochure/" + idd + FileName;

                         }
                     }
                     else
                     {
                         UpResume.SaveAs(Server.MapPath("../Brochure/" + id + FileName ));
                         Session["PostedFile"] = UpResume.PostedFile;
                         Session["strFileType"] = strFileType;
                         Session["FileName"] = "../Brochure/" + id + FileName;
                     }
                 }
             }
             catch (Exception)
             { }

         }
     }
public string getContentType(string filetype)
     {
         string contenttype = string.Empty;
         try
         {
             switch (filetype)
             {
                 case ".doc":
                     contenttype = Doc_File;
                     break;
                 case ".docx":
                     contenttype = Docx_File;
                     break;
                 case ".xls":
                     contenttype = MS_EXCEl_xls_File;
                     break;
                 case ".xlsx":
                     contenttype = MS_EXCEl_xlsx_File;
                     break;
                 case ".jpg":
                     contenttype = JPG_Image_File;
                     break;
                 case ".png":
                     contenttype = PNG_Image_File;
                     break;
                 case ".gif":
                     contenttype = GIF_Image_File;
                     break;
                 case ".pdf":
                     contenttype = PDF_File;
                     break;
             }
         }
         catch (Exception)
         {
         }
         return contenttype;
     }


     protected void btnSubmit_Click(object sender, EventArgs e)
     {
         try
         {
             if (btnSubmit.Text.ToLower().Equals("submit"))
             {
                 Getdata();

             }

             else if (btnSubmit.Text.ToLower().Equals("delete"))
             {
                 VarBrochures.BrochureID = Convert.ToInt64(Session["BID"].ToString());
                 ObjBrochures.Delete(VarBrochures.BrochureID);

              }
         }
         catch (Exception)
         {
         }
     }

      protected void lbtnBrochure_Click(object sender, EventArgs e)
     {
         try
         {
             string id = Session["BID"].ToString();
             DataTable dtdata = ObjMaster.FetchData(Transaction.ParticularBrochuresByID, null, null, null, null, Convert.ToInt32(id));
             if (dtdata.Rows.Count>0)
             {
                 string ext = Path.GetExtension(dtdata.Rows[0]["Content"].ToString());
                 string nm = dtdata.Rows[0]["Content"].ToString();
                 //lbtnBrochure.PostBackUrl = "../Brochure/" + nm;
                 Response.Clear();
                 Response.ContentType = "Application/pdf";
                 Response.AddHeader("Content-Disposition","attachment;filename="+nm);


                 string FilePath = Server.MapPath("../Brochure/" + nm);
                 Response.TransmitFile(FilePath);
                Response.Flush();

                Response.End();
                 //HttpContext.Current.Response.Flush(); // Sends all currently buffered output to the client.
                 //HttpContext.Current.Response.SuppressContent = true;  // Gets or sets a value indicating whether to send HTTP content to the client.
                // HttpContext.Current.ApplicationInstance.CompleteRequest();
                 ClearAllData();
             }

         }
         catch (Exception ex)
         {

         }
         finally
         {

         }
     }
 }/pre>

Posted 31-Jan-16 18:32pm

asplover1

Updated 31-Jan-16 20:33pm

v6

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Ebenezar John Paul · Answer 1 · 2016-01-31T18:47:00

Solution 1

Replace

C#

Response.End();

with

C#

HttpContext.Current.Response.Flush(); // Sends all currently buffered output to the client.
HttpContext.Current.Response.SuppressContent = true;  // Gets or sets a value indicating whether to send HTTP content to the client.
HttpContext.Current.ApplicationInstance.CompleteRequest(); // Causes ASP.NET to bypass all events and filtering in the HTTP pipeline chain of execution and directly execute the EndRequest event.

Posted 31-Jan-16 18:47pm

Ebenezar John Paul

Comments

asplover1 1-Feb-16 0:49am

Thank you for reply

asplover1 1-Feb-16 0:53am

It neither throw exception nor download the file

Ebenezar John Paul 1-Feb-16 1:14am

It works for me. Try to rebuild the project, take away all the breakpoints, do a clean run and check the downloads. The suggested solution works best in all cases of Thread being aborted exception caused by Response.End().

Member 14789376 7-Apr-20 4:30am

Hi, did you find a solution? It neither throw exception nor download the file for my app too. If you found a solution can you share please?

Manas_Kumar · Answer 2 · 2016-01-31T18:55:00

Try to use ApplicationInstance.CompleteRequest instead of Response.End(). See below code:

C#

Response.ContentType = "Application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + File1.pdf);
Response.TransmitFile(Server.MapPath("../Brochure/" + File1.pdf));
Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();

Reason: ApplicationInstance.CompleteRequest causes ASP.NET to bypass all events and filtering in the HTTP pipeline chain of execution and directly execute the EndRequest event. But Response.End() sends all currently buffered output to the client, stops execution of the page, and raises the EndRequest event. It also raise a ThreadAbortException exception.

HttpResponse.End Method (System.Web)[^]