The WebPartDisplayModeEventArgs class contains information for the DisplayModeChanged event. The WebPartDisplayModeEventArgs class provides access to the display mode that was applied to the Web Parts control before the DisplayModeChanged event. The former display mode is accessed through the OldDisplayMode property.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.