The base class implementation of OnLoadPostControlState calls this method once per child element of the <StateItems> node in XML data received from the client during a post back.
Inheritors maintaining this structure of control state are encouraged to override this method in order to read changes in sub-property values to client-side objects having analogous server-side correspondents.
Target Platforms: Windows 10, Windows 8.1, Windows 8, 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