Make ListBox items have a different value than item text

Question

I want a ListBox full of items. Although, each item should have a different value. So when the user selects an item and presses a button, a method will be calle

Answer 1

items have a property called 'Tag', which you can use to store any information you want (hidden from the user)

ListViewItem myItem = new ListViewItem();
myItem.Text = "Users see this";
myItem.Tag = "Users don't see this";

(or set the appropriate properties in the property explorer)