Causes the control to track changes to its view state so they can be stored in the object's System.Web.UI.Control.ViewState property.
The WebControl.TrackViewState method is used primarily by control developers.
The WebControl.TrackViewState marks the starting point at which to begin tracking and saving changes to the view state for the control. The WebControl.TrackViewState method is called automatically by ASP.NET when a server control is initialized.