Send file using Response.BinaryWrite() and delete it afterwards

Question

As part of a Classic ASP Project the user should be able to download a file - which is dynamicly extracted from a zip archive and sent via Response.BinaryWrite() - by simply calling "document.asp?id=[some id here]".

Extracting and sending is not the problem but I need to delete the extracted file after the download finished. I never did any ASP or VBA before and I guess that's why I stuck here.

I tried deleting the file right after Response.WriteBinary() using FileSystemObject.DeleteFile() but this results in a 404-Error on the client-side.

How can I wait till the download finished and then do additional actions?

Edit: This is how my code looks like:

'Unzip a specified file from an archive and put it's path in *document*

set stream = Server.CreateObject("ADODB.Stream")
stream.Open
stream.Type = 1 ' binary
stream.LoadFromFile(document)

Response.BinaryWrite(stream.Read)

'Here I want to delete the *document*

Answer 1

Is it not possible to stream the file into memory, then binary write the stream to the browser, this way the file is never created on the server and there is no need to delete it.

Answer 2

I suspect that the point you are calling the DeleteFile method the file you are trying delete is currently locked by something else, the question is what?

Try including:-

 stream.Close()

after your BinaryWrite. Also make sure you've done a similar thing to the component you've used to extract the file. If the component doesn't offer any obviouse "close" methods they trying assigning Nothing to the variables referencing them.

Answer 3

I found a solution: The extracted files are saved in a special directory and everytime a user runs the document.asp it checks this directory for files older than one hour and deletes them.

I think it's the simplest way to manage, but furthermore I would prefer a solution where the document is deleted after downloading.