Question

In our project we have got a admin application and a client application.
The admin application is used to manage all clients.

So when i logged in to server application , the admin credentials are saved in session.

After that i accessed client application in another browser. It contains a download functionality. After download what happens is that it clears all session data. So after each download i need to login again in the admin module.

Download handler

                if (context.Request["fileUrl"] != null)
                {
                    fileUrl = context.Request["fileUrl"].ToString();                    
                }
                string filename = System.IO.Path.GetFileName(fileUrl);    
                context.Response.ClearContent();
                   context.Response.ContentType = "application/exe";
                context.Response.AddHeader("content-disposition", String.Format("attachment; filename={0}", filename));
                context.Response.TransmitFile(fileUrl);                
                context.Response.Flush();

I have used an iframe to do the download. So i will set the source for iframe when download button is clicked

Code behind file

iframeDownload.Attributes["src"] = "DownloadHandler.ashx?fileUrl=" + downloadUrl;
//code to be executed after download
//here i am enabling a timer control

But i can’t find why the session is cleared after this download.
I found a similar issue in this SO post.
Session expires after file download

But for him it happens only in IE, but in my case its happening in all browsers.

Answer 1

Actually in my code after the successful download we need to delete a folder from my application. This causes the restart of App_domain.

Ref: SO post Delete Directory from ASP.NET application returns to new session.