Dropdown menu items in c#

Hi,
 
I'm trying to make a dropdown menu where I can select an available printer. I can display the available printers, no problems so far. But how can I recognize if someone clicks on the menu item?
I.E.
 

string printername = "GX430t" // note: this is a variable name, depends on the printer name installed.

select printerNameMenuItem.DropDownItems.Add(printername); // here do I add the new printer to the menu item.

 
How do I add an event to the added item, which activates when the user clicks on the menu item?