File upload problem

[scoper]

Hi all,

I have written an AJAX progress bar for file uploads... the file upload is implemented in an HttpModule.

When a file is submitted using an input type="file", the browser hangs until the file has finished uploading.

I know this doesn't have anything to do with the code that actually uploads the file, because when i was first running some tests (before actually writing the module) using the built-in asp.net file upload bits, i was getting the same problem.

The file input is located in an iframe on the page which, onsubmit, calls a function in the parent page to handle the progress callbacks. Once the iframe submits, no more code is executed on the parent page until the iframe has finished uploading.

Does anyone know why this is happening?

Thanks in advance

Scott