send filename by the Right-Click send to context menu

Question

Hey everybody!
I'm new here and in C#
I start to study it by myself and I'm trying to create a right-click context menu command for sending
the filename and path to my program.
 So far I got simple program with textbox
my goal is when I'm clicking on the right click context menu and selecting SendTo-> MyApp
it will open MyApp and put the filename and his path to the textbox.
 
Thanx!