ListBox control, shown in Figure 10.1, is similar to
ComboBox except that all items are displayed directly within the control’s bounds, or you can scroll to view additional items if they don’t all fit. The most important feature of
ListBox is that it can support multiple simultaneous selections. This is controllable via the
SelectionMode property, which accepts three values (from a
Single—Only one item can be selected at a time, just like with
ComboBox. This is the default value.
Multiple—Any number ...