CheckedListBox

CheckedListBox

marshal by reference, disposable

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

class

This control, derived from ListBox , provides a list of items with a check beside each one, providing an alternative selection mechanism. It extends the base listbox by providing you with two collection accessors: CheckedItemCollection , which returns the set of all the checked items in the list, and CheckedIndexCollection , which returns a set containing the index of each checked item in the list. You can then use the GetItemChecked() and GetItemCheckState() methods to determine the actual check state for the item.

You can support either two- or three-state checkboxes, and ThreeDCheckBoxes , or flat ones. You can also choose whether the item is checked when it is selected, or whether the checkbox itself must be clicked.

 public class  CheckedListBox  : ListBox {  // Public Constructors  public  CheckedListBox  ();  // Public Instance Properties  public CheckedIndexCollection  CheckedIndices  {get; }    public CheckedItemCollection  CheckedItems  {get; }    public bool  CheckOnClick  {set; get; }    public override DrawMode  DrawMode  {set; get; }  // overrides ListBox  public override int  ItemHeight  {set; get; }  // overrides ListBox  public ObjectCollection  Items  {get; }  // overrides ListBox  public override SelectionMode  SelectionMode  {set; get; }  // overrides ListBox  public bool  ThreeDCheckBoxes  {set; get; }  // Protected Instance Properties  protected override CreateParams  CreateParams  {get; }  // overrides ListBox   // Public Instance Methods  public bool  GetItemChecked  (int  index  );    public CheckState  GetItemCheckState  (int  index  );    public void  SetItemChecked  (int  index  , bool  value  );    public void  SetItemCheckState  (int  index  , CheckState  value  );  // Protected Instance Methods  protected override AccessibleObject  CreateAccessibilityInstance  ();  // overrides Control  protected override ObjectCollection  CreateItemCollection  ();  // overrides ListBox  protected override void  OnBackColorChanged  (EventArgs  e  );  // overrides Control  protected override void  OnClick  (EventArgs  e  );  // overrides Control  protected override void  OnDrawItem  (DrawItemEventArgs  e  );  // overrides ListBox  protected override void  OnFontChanged  (EventArgs  e  );  // overrides ListBox  protected override void  OnHandleCreated  (EventArgs  e  );  // overrides ListBox  protected virtual void  OnItemCheck  (ItemCheckEventArgs  ice  );    protected override void  OnKeyPress  (KeyPressEventArgs  e  );  // overrides Control  protected override void  OnMeasureItem  (MeasureItemEventArgs  e  );  // overrides ListBox  protected override void  OnSelectedIndexChanged  (EventArgs  e  );  // overrides ListBox  protected override void  WmReflectCommand  (ref Message  m  );  // overrides ListBox  protected override void  WndProc  (ref Message  m  );  // overrides ListBox   // Events  public event EventHandler  Click  ;  // overrides ListBox  public event DrawItemEventHandler  DrawItem  ;  // overrides ListBox  public event ItemCheckEventHandler  ItemCheck  ;    public event MeasureItemEventHandler  MeasureItem  ;  // overrides ListBox  } 

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) ListControl ListBox CheckedListBox

Passed To

ObjectCollection.ObjectCollection()