响应重定向使session_end在全局asax中

Question

I am getting frustrated due to the session become null.
When I click on save button I save the data to DB from code behind and if this successfully I am redirecting the user to the main projects page,using syntax:

Response.Redirect("~/Admin/Projects.aspx?i=esc&prjName=abc",'false');

but its make my session null.
Its goes to Globex.asax page ang executes the Session_End and make all session null.

I even tried Server.Transfer but by this the browser url remains same and client doesn't want this.Even some where I read that the Server.Execute is also used to redirect but it is showing some wrong results.

can I use the Response.Redirect without this session null problem ??

(In this page I am creating the text file to store some long description and if this is successful then I am redirecting to the another page.)

Update::

here is my code for button click

protected void lnkbtnAddDescription_Click(object sender, EventArgs e)
        {
            try
            {
                if ((!hidProjId.Value.ToString().Equals("") || !hidEditProjId.Value.ToString().Equals("")) && !txtDescription.Value.ToString().Equals(""))
                {
                    //ProjectDescription
                    int projId = 0;
                    if (!hidIsEdit.Value.ToString().Equals(""))
                    {
                        projId = Convert.ToInt32(hidEditProjId.Value.ToString());
                    }
                    else
                    {
                        projId = Convert.ToInt32(hidProjId.Value.ToString());
                    }

                    ProjectM proj = new ProjectM();
                    proj.LoadByKey(projId);

                    string prj = proj.ProjectName.ToString().Replace(" ", "-");

                    string strDirectoryPath = Server.MapPath("~/ProjectDescription/") + proj.ProjectId + "-" + prj;
                    if (!Directory.Exists(strDirectoryPath))
                    {
                        Directory.CreateDirectory(strDirectoryPath);

                        string filePath = strDirectoryPath + "/" + proj.ProjectId + "-" + prj + ".txt";
                        string strDescription = txtDescription.Value.ToString().Replace("<br />", "<p>");
                        createTextFile(filePath, strDescription);

                        string dbDirectoryPath = "~/ProjectDescription/" + proj.ProjectId + "-" + prj + "/" + proj.ProjectId + "-" + prj + ".txt";
                        proj.Description = dbDirectoryPath.ToString();
                        proj.IsNew = false;
                        proj.Save();

                        if (!hidIsEdit.Value.ToString().Equals(""))
                        {
                            //Server.Execute("~/SuperAdmin/Projects.aspx?i=esc&prjName=" + proj.ProjectName.ToString() + "",false);
                            Session["dsProj"] = null;
                            Session["editProjId"] = null;
                            Session["fname"] = hidFname.Value.ToString();
                            Session["UserId"] = hidUserId.Value.ToString();
                            Session["role"] = hidRole.Value.ToString();
                            Response.Redirect("~/SuperAdmin/Projects.aspx?i=esc&prjName=" + proj.ProjectName.ToString());
                        }
                        else
                        {
                            //Server.Execute("~/SuperAdmin/Projects.aspx?i=sc&prjName=" + proj.ProjectName.ToString() + "",false);
                            Session["dsProj"] = null;
                            Session["editProjId"] = null;
                            Session["fname"] = hidFname.Value.ToString();
                            Session["UserId"] = hidUserId.Value.ToString();
                            Session["role"] = hidRole.Value.ToString();
                            Response.Redirect("~/SuperAdmin/Projects.aspx?i=sc&prjName=" + proj.ProjectName.ToString());
                        }

                    }
                    else
                    {
                        Directory.Delete(strDirectoryPath, true);
                        Directory.CreateDirectory(strDirectoryPath);

                        string fileName = proj.ProjectName.ToString().Replace(" ", "-");

                        string filePath = strDirectoryPath + "/" + proj.ProjectId + "-" + fileName + ".txt";
                        string strDescription = txtDescription.Value.ToString().Replace("<br>", "<p>");
                        createTextFile(filePath, strDescription);

                        string dbDirectoryPath = "~/ProjectDescription/" + proj.ProjectId + "-" + proj.ProjectName.ToString() + "/" + proj.ProjectId + "-" + proj.ProjectName.ToString() + ".txt";
                        proj.Description = dbDirectoryPath.ToString();
                        proj.IsNew = false;
                        proj.Save();

                        if (!hidIsEdit.Value.ToString().Equals(""))
                        {
                            //Server.Execute("~/SuperAdmin/Projects.aspx?i=esc&prjName=" + proj.ProjectName.ToString() + "", false);
                            Session["dsProj"] = null;
                            Session["editProjId"] = null;
                            Session["fname"] = hidFname.Value.ToString();
                            Session["UserId"] = hidUserId.Value.ToString();
                            Session["role"] = hidRole.Value.ToString();
                            Response.Redirect("~/SuperAdmin/Projects.aspx?i=esc&prjName=" + proj.ProjectName.ToString());
                        }
                        else
                        {
                            //Server.Execute("~/SuperAdmin/Projects.aspx?i=sc&prjName=" + proj.ProjectName.ToString() + "", false);
                            Session["dsProj"] = null;
                            Session["editProjId"] = null;
                            Session["fname"] = hidFname.Value.ToString();
                            Session["UserId"] = hidUserId.Value.ToString();
                            Session["role"] = hidRole.Value.ToString();
                            Response.Redirect("~/SuperAdmin/Projects.aspx?i=sc&prjName=" + proj.ProjectName.ToString());
                        }
                    }
                }
            }
            catch (Exception)
            {

            }
        }

        private void createTextFile(string filePath, string strDescription)
        {
            try
            {   
                StreamWriter w = File.CreateText(filePath);
                w.WriteLine(strDescription);
                w.Flush();
                w.Close();
            }
            catch (Exception ex)
            {

            }
        }

Answer 1

Before you redirect to the next page, assign the existing session value in the button click event also.

This would solve the problem.

Answer 2

hope this will be helpful to you, ASP.NET Session becomes null after postback on local

This think your problem is related to some kind of permission denial, which is nulling your session.

Answer 3

There must be a problem in creating or saving the text file. This may be making Session_End call so you are getting all values null.

Answer 4

Folder delete, move, rename causes Session end and long refresh

http://www.telerik.com/community/forums/aspnet-ajax/file-explorer/folder-delete-move-rename-causes-session-end-and-long-refresh.aspx#1365780