How can I programmatically display the context menu for a file?

In a C # program, I would like to display a context menu for a file.

For example: if the user clicked on a file name in my program, I would like to display the actual right-click menu. In fact, I mean the context menu of the system. I don't need programmatic access to content. I just need to display it.

Any ideas to get me started?

Thank!