Question

ok i am downloading a file from a server and i plan to delete the file that i have downloaded on the server after it gets downloaded on the client side..

My download code is working fine but i dont know when to put the command to delete the file.

string filepath = restoredFilename.ToString();

            // Create New instance of FileInfo class to get the properties of the file being downloaded
            FileInfo myfile = new FileInfo(filepath);

            // Checking if file exists
            if (myfile.Exists)
            {

                // Clear the content of the response
                Response.ClearContent();

                // Add the file name and attachment, which will force the open/cancel/save dialog box to show, to the header
                Response.AddHeader("Content-Disposition", "attachment; filename=" + myfile.Name);

                //Response.AddHeader("Content-Disposition", "inline; filename=" + myfile.Name);
                // Add the file size into the response header
                Response.AddHeader("Content-Length", myfile.Length.ToString());

                // Set the ContentType
                Response.ContentType = ReturnExtension(myfile.Extension.ToLower());

                //// Write the file into the response (TransmitFile is for ASP.NET 2.0. In ASP.NET 1.1 you have to use WriteFile instead)
                Response.TransmitFile(myfile.FullName);

                // End the response
                Response.End();

            }

Now i know the response.End() will stop every thing and return the value, so is there another way too do so..

I need to call a function

DeleteRestoredFileForGUI(restoredFilename);

to delete the file but dont know where to put it.. i tried putting before and after Response.End() but it does not work..

any help is appreciated… thanks

Answer 1

Add

Response.Flush();
DeleteRestoredFileForGUI(restoredFilename);

after the call to TransmitFile() and ditch the call to Response.End() (you don’t need it).

If that does not work, then ditch TransmitFile() and go with:

Stream s = myFile.OpenRead();
int bytesRead = 0;
byte[] buffer = new byte[32 * 1024] //32k buffer
while((bytesRead = s.Read(buffer, 0, buffer.Length)) > 0 &&
      Response.IsClientConnected)
{
   Response.OutputStream.Write(buffer, 0, bytesRead);
   Response.Flush();
}