ListControl

ListControl

marshal by reference, disposable

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

abstract class

This is the abstract base class for list-like Control objects, such as the ListBox , ComboBox , and derived classes.

It provides the basic template for data binding through the DataSource , DisplayMember , and ValueMember properties. Simple selection is accomplished with the SelectedIndex and SelectedValue members .

The concrete derived classes will extend these basic features to offer more specific functionality.

 public abstract class  ListControl  : Control {  // Protected Constructors  protected  ListControl  ();  // Public Instance Properties  public object  DataSource  {set; get; }    public string  DisplayMember  {set; get; }    public abstract int  SelectedIndex  {set; get; }    public object  SelectedValue  {set; get; }    public string  ValueMember  {set; get; }  // Protected Instance Properties  protected CurrencyManager  DataManager  {get; }  // Public Instance Methods  public string  GetItemText  (object  item  );  // Protected Instance Methods  protected object  FilterItemOnProperty  (object  item  );    protected object  FilterItemOnProperty  (object  item  , string  field  );    protected override bool  IsInputKey  (Keys  keyData  );  // overrides Control  protected override void  OnBindingContextChanged  (EventArgs  e  );  // overrides Control  protected virtual void  OnDataSourceChanged  (EventArgs  e  );    protected virtual void  OnDisplayMemberChanged  (EventArgs  e  );    protected virtual void  OnSelectedIndexChanged  (EventArgs  e  );    protected virtual void  OnSelectedValueChanged  (EventArgs  e  );    protected virtual void  OnValueMemberChanged  (EventArgs  e  );    protected abstract void  RefreshItem  (int  index  );    protected virtual void  SetItemCore  (int  index  , object  value  );    protected abstract void  SetItemsCore  (System.Collections.IList  items  );  // Events  public event EventHandler  DataSourceChanged  ;    public event EventHandler  DisplayMemberChanged  ;    public event EventHandler  SelectedValueChanged  ;    public event EventHandler  ValueMemberChanged  ; } 

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

Subclasses

ComboBox , ListBox