Raises the Enter event of the TabControl.
Protected Overrides Sub OnEnter ( _ e As EventArgs _ )
protected override void OnEnter( EventArgs e )
protected: virtual void OnEnter( EventArgs^ e ) override
abstract OnEnter : e:EventArgs -> unit override OnEnter : e:EventArgs -> unit
In .NET Framework version 2.0, this method also raises the Enter event of the current TabPage. In .NET Framework 2.0, the tab is considered part of the tab page for determining when the Enter and Leave events of the TabPage occur. In earlier versions of the .NET Framework, the Enter and Leave events of the TabPage do not occur when focus enters or leaves a tab, but only when focus enters or leaves the client rectangle of the tab page.
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnEnter method also enables derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
When overriding OnEnter in a derived class, be sure to call the base class's OnEnter method so that registered delegates receive the event.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2