desktop application from the webbrowser

I have a desktop application that takes few input parameters and give me the resultant output file.

I want to use via web. I want to create a website where user can input those parameters and the开发者_如何学运维n i can process it on my server (using the desktop application) and display the resultant file to the user

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You can call your application from a site using Process.Start.

Response.WriteFile will let you to return a file to the browser.

It is not clear from your question where you are having difficulties. Can you be more specific?