HELP with LISTBOXES!

Question

I have 3 questions: 

 

1. How can I make a listbox appear when I click an Image?

 

2. How can I add images to my listbox? 

 

3. How can I use the code in Question #1 as a function? (thats whats it called right?). Cuz I have to make a listbox appear in 40 images when I click them.

 

 

PS: Try to use as simple codes as possible. Im new in C# programming. :)

Any help would be appreciated :) 

Thanks!