You should derive your own custom container controls from this base class. It manages focus, tab, and mnemonic (shortcut) behavior for you, and provides designer integration support.

public class UserControl : ContainerControl {
// Public Constructors
   public UserControl();
// Public Instance Properties
   public override string Text{set; get; }
// overrides Control
// Protected Instance Properties
   protected override Size DefaultSize{get; }
// overrides Control
// Protected Instance Methods
   protected override void OnCreateControl();  // overrides ContainerControl
   protected virtual void OnLoad(EventArgs e);
   protected override void OnMouseDown(MouseEventArgs e);  // overrides Control
   protected override void WndProc(ref Message m);  // overrides ContainerControl
// Events
   public event EventHandler Load;
}

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) ScrollableControl ContainerControl(IContainerControl) UserControl