This method is used primarily by the .NET Framework infrastructure and is not intended to be used directly from your code. However, control developers can override this method to specify how a custom server control restores its view state. For more information, see ASP.NET State Management Overview.
The LoadViewState method is used to load the previously saved view state of the DataKey object.
Notes to Inheritors:
When extending the DataKey class, you can override this method to implement your own routine to load the view state for the object.