Deserializes and loads persisted state information from an System.Web.HttpRequest object when a System.Web.UI.Page object initializes its control hierarchy.
The System.Web.UI.HiddenFieldPageStatePersister class implements the HiddenFieldPageStatePersister.Load method to load page and control state information from an incoming request to the Web server. The System.Web.UI.ObjectStateFormatter object accessed by the PageStatePersister.StateFormatter property is used to deserialize the data.