Using the <i class="emphasis">RadioButton</i> Class

Using the RadioButton Class

As discussed in the In Depth section of this chapter, radio buttons are much like checkboxes, except that they're usually used in groups. Here is the class hierarchy of the RadioButton class:

Object
   MarshalByRefObject
      Component
         Control
            ButtonBase
               RadioButton

You can find the more notable public properties of the RadioButton class in Table 6.5, the notable methods in Table 6.6, and the notable events in Table 6.7, including those inherited from the ButtonBase class. Note that as with other controls, I am not listing the notable properties, methods, and events RadioButton inherits from the Control class, such as the Click event—you can see all that in Chapter 5, Tables 5.1, 5.2, and 5.3.

Table 6.5: Noteworthy public properties of *RadioButton* objects.
Property	Means
Appearance	Gets/sets the value that determines the appearance of the radio button.
AutoCheck	Gets/sets a value indicating whether the Checked value and the appearance of the \| control automatically change when the radio button is clicked.
Checked	Gets/sets a value indicating whether the radio button is checked.
FlatStyle	Gets/sets the flat style appearance of the radio button.
Image	Gets/sets the image that is displayed in a radio button.
ImageAlign	Gets/sets the alignment of the image in a radio button.
ImageIndex	Gets/sets the image list index value of the image displayed in a radio button.
ImageList	Gets/sets the ImageList that contains the image displayed in a radio button.
TextAlign	Gets/sets the alignment of the text in a radio button.

Table 6.6: Noteworthy public methods of *RadioButton* objects.
Method	Means
PerformClick	Generates a Click event for the radio button, simulating a click by a user.

Table 6.7: Noteworthy public events of *RadioButton* objects.
Event	Means
AppearanceChanged	Occurs when the Appearance property changes.
CheckedChanged	Occurs when the value of the Checked property changes.