Send Json Structure To Server And Return File?

Jul 2, 2010

I'm having a very hard time wrapping my head around this problem (it might be the heat from the summer finally arriving).


I want the user to press a button client side which performs javascript data preparing and at last send a JSON structure to (currently a asmx webservice on) the server. The JSON structure is several levels deep.

Server side I create a PDF file which I want to send back to the user.

The user feeling is that she presses a button and expects a PDF to return to her - either in a new window or as a download (preferrable).

The system consists of (client side) HTML, JavaScript and ExtJS and (server side) ASP.NET.

Normally I would use an ashx handler to return a file to the client, but can I send a JSON structure to the handler and still be able to parse it correctly server side?

I am searching for the pattern to use.

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