Assembly: PresentationFramework (in PresentationFramework.dll)
The default implementation of this virtual method raises the event as described earlier in this topic. Overrides should call base() to preserve this behavior.
Note that the IsInitialized property is read-only. Therefore, you cannot set it to force initialization behavior that way. Initialization setting is intended to be done only by the Windows Presentation Foundation (WPF) framework.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2