Explain the operational differences between the following controlsa. ComboBox and ListBox (2 Marks)b. RadioButtons and CheckBoxes (2 Marks)c. PictureBox and GroupBox (2 Marks)
Question
Explain the operational differences between the following controlsa. ComboBox and ListBox (2 Marks)b. RadioButtons and CheckBoxes (2 Marks)c. PictureBox and GroupBox (2 Marks)
Solution
a. ComboBox and ListBox: A ComboBox is a combination of a text box and a ListBox. This allows the user to either enter a value directly into the field or choose from a list of existing options. The ComboBox only displays one selected item at a time.
A ListBox, on the other hand, is a control that provides a list of items to the user. The user can select one or more items depending on the settings. Unlike the ComboBox, the ListBox displays multiple items at once.
b. RadioButtons and CheckBoxes: RadioButtons are used when you want the user to select only one option from a group of choices. When one RadioButton within a group is selected, the others are automatically deselected.
CheckBoxes are used when you want the user to select any number of options - even none at all. Each CheckBox operates individually, so a user can toggle each option on or off independently of the others.
c. PictureBox and GroupBox: A PictureBox is a control that displays an image. You can set the image at design time or at runtime, and the control will resize itself to fit the image if the 'SizeMode' property is set to 'AutoResize'.
A GroupBox is a control that acts as a container for other controls. It has a border and a caption, and is typically used to group related controls together to provide a visual indication of their association. It does not have any functionality of its own.
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