How open a local file with the associated program from a web page?

Question

I know the user of my app has a local file named c:\\sourcefile.cs, I need to find a way to render a link to that file so that when he clicks the link, it will open the file in

Answer 1

This is not possible because of security reasons. Javascript in the browser cannot access the clients computer.

You would need to use a Java applet or something else like that to make that happen.