ListView selected item and button interaction?

Question

Let's say I have a ListView with several items as "stages" in a game, and one button that says "start stage". How can I check which item is selected at the button_click handler, so I can load the appropriate stage?

Note: Using VisualStudio (C#)

Answer 1

dropdownlist1.selectedValue

Think that is what you are saying by how you phrased it