Tracks view-state changes to the TreeView control so that they can be stored in the System.Web.UI.StateBag object for the control. This System.Web.UI.StateBag is accessible through the Control.ViewState property.
protected override void TrackViewState()
The TrackViewState method is overridden to mark the starting point to begin tracking and saving changes to the control as part of the view state for the control.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.