How can you open windows program by pressing a button on web page

How can you open windows program by pressing a button on web page

I develop web app in asp.net, and I want to do some action in windows when press button on

the web page,

For example: when you press Messenger button in http://www.msn.com/?ocid=hmlogout

windows live messenger will open in your computer,

Is there a certain tech开发者_如何学Pythonnique to do that ?

thanks for any suggestion.

Dani.

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This will not work unless you try to upen a URI with an associated protocol on the client.

torrent:// or something like this.

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You can either:

1. open applications associated with a protocol (as citronas said)
2. use a trusted applet/activex