Exercise #15 - Basic list processing

Add a textbox and button to your form.  Make a class variable of type List<string>.  Every time the button is clicked, the contents of the textbox should be added to your list (but you won't see anything because the list is not displayed anywhere at this point).

Add a second button to your form.  When it is clicked output the contents of the list to a listbox or multi-line textbox in reverse order in which they were originally typed in.