RadioButton

RadioButton

marshal by reference, disposable

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System. Windows .Forms (system. windows .forms.dll)

class

This Control provides a means of selecting one of a set of mutually exclusive options. (Compare this with a set of CheckBox objects that may all be selected simultaneously .) All the RadioButton objects within a single container act as a single exclusion group . Therefore, to have several independent groups on the same parent Control , you must place them in different containers. Panel or GroupBox objects will do the job.

You can change the Appearance of the control from the Normal dot with a label to a Button -like style. In the Normal view, the position of the RadioButton relative to the label can be modified with the CheckAlign property.

As with the CheckBox , you can determine whether the item is Checked (although it does not have an equivalent of the CheckBox.CheckState property, as there is no tristate support). You can also enable AutoCheck to ensure that the system automatically checks the selected button and unchecks the others in the group. You can bind to the CheckedChanged event to be notified when the Checked state changes.

 public class  RadioButton  : ButtonBase {  // Public Constructors  public  RadioButton  ();  // Public Instance Properties  public Appearance  Appearance  {set; get; }    public bool  AutoCheck  {set; get; }    public ContentAlignment  CheckAlign  {set; get; }    public bool  Checked  {set; get; }    public bool  TabStop  {set; get; }  // overrides Control  public override ContentAlignment  TextAlign  {set; get; }  // overrides ButtonBase   // Protected Instance Properties  protected override CreateParams  CreateParams  {get; }  // overrides ButtonBase  protected override Size  DefaultSize  {get; }  // overrides ButtonBase   // Public Instance Methods  public void  PerformClick  ();    public override string  ToString  ();  // overrides System.ComponentModel.Component   // Protected Instance Methods  protected override AccessibleObject  CreateAccessibilityInstance  ();  // overrides ButtonBase  protected virtual void  OnCheckedChanged  (EventArgs  e  );    protected override void  OnClick  (EventArgs  e  );  // overrides Control  protected override void  OnEnter  (EventArgs  e  );  // overrides Control  protected override void  OnHandleCreated  (EventArgs  e  );  // overrides Control  protected override void  OnMouseUp  (MouseEventArgs  mevent  );  // overrides ButtonBase  protected override bool  ProcessMnemonic  (char  charCode  );  // overrides Control   // Events  public event EventHandler  AppearanceChanged  ;    public event EventHandler  CheckedChanged  ; } 

Hierarchy

System.Object System.MarshalByRefObject System.ComponentModel.Component(System.ComponentModel.IComponen, System.IDisposable) Control(IOleContro, IOleObject , IOleInPlaceObject , IOleInPlaceActiveObject , IOleWindow , IViewObject , IViewObject2 , IPersist , IPersistStreamInit , IPersistPropertyBag , IPersistStorage , IQuickActivate , System.ComponentModel.ISynchronizeInvoke , IWin32Window) ButtonBase RadioButton

Passed To

RadioButtonAccessibleObject.RadioButtonAccessibleObject()