Assembly: System.Windows.Forms (in system.windows.forms.dll)
An EventArgs that contains the event data.
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnMouseEnter method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Do not call OnMouseEnter if the button is disabled (this includes call to the base class's OnMouseEnter method when you override OnMouseEnter in a derived class). When disabling the button in an override of OnMouseEnter, call the base class's OnMouseEnter method before disabling the button, or do not call it at all.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.