Question

When should you use each of the following controls: ListBox, CheckBox, RadioButton, and CheckedListBox?

Answer 1

ListBox

ListBox is used when the user needs to select a value from a set of many values. They are like the set of Radio buttons except that ListBox is scrollable and can have more items than a list of Radio buttons that are limited because of the screen display area. Also, the number of entries in a ListBox can change during runtime.

CheckBox

CheckBox allows the user to set yes/no or true/false type options. The user can select it or deselect it. When a checkbox is selected it holds the value True, and when it is cleared, it holds the value False. A CheckBox is used when there are lists of options and the user may  select any number of choices, including zero, one etc.

RadioButton

RadioButton is used when there is a list of two or more mutually exclusive options and the user must select only one choice i.e. clicking an un-selected radio button will deselect all other buttons which were previously selected in the list. The user can select exactly one radio button in a group. If you want to place more than one group of radio buttons in the same form, then you should place them in different containers like a GroupBox.

CheckedListBox

CheckedListBox allows the user to select or we can say check multiple items from a list of things. It gives you all the capability of a ListBox and allows you to show a checkmark next to the items that are marked in the ListBox.