Web Forms :: Client Side Script Returning Status OK Before Fully Rendering Page?

Feb 19, 2010

I have a page that downloads a dataset and streams the output to an Excel file by modifying the response headers.

I want to write an AJAX call on the client side that can display a modaldialog while the file is being generated and dismiss the modaldialog when the file has been fully rendered.

I can turn the dalog on when the user clicks a link, but for some reason my pages return readystate 4 and status 200 prematurely. (These are the codes that say the page is done)

Because this is happening, either the modal dialog is dismissed immediately or I need the user to dismiss it.

Has anyone seen this before? Is this an issue with streaming a file instead of hitting a physical page?

Does anyone have a work-around, or will I need to have the user manually dismiss the dialog?

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