Interact with other desktop-applications in window

Question

I was wondering if its possible to interact with other programs someone with my program. For example clicking a button on another program etc. etc. I'm not sure if this is even possible but if it is could someone provide a little sample code in C#.

Thanks

Answer 1

You could just create and send messages to the other process. You will have to use P/Invoke for this from C# code.

Here is some code that should point you into the right direction.

Answer 2

You can use UI Automation to interact with other applications.