PageStatePersister.Load Method ()
Overridden by derived classes to deserialize and load persisted state information when a Page object initializes its control hierarchy.
Assembly: System.Web (in System.Web.dll)
Classes that derive from the PageStatePersister class implement the Load method to initialize the ViewState and ControlState properties from some persisted format.
The following code example demonstrates how a class that derives from the PageStatePersister class implements the Load method to load view state from a persistence medium. The StreamPageStatePersister attempts to read data from a stream. It uses an IStateFormatter object to deserialize view state data and initialize the ViewState property and the ControlState property, which a page uses to initialize controls. This code example is part of a larger example provided for the PageStatePersister class.
' ' Load ViewState and ControlState. ' Public Overrides Sub Load() Dim stateStream As Stream stateStream = GetSecureStream() ' Read the state string, using the StateFormatter. Dim reader As New StreamReader(stateStream) Dim serializedStatePair As String serializedStatePair = reader.ReadToEnd Dim statePair As Pair Dim formatter As IStateFormatter formatter = Me.StateFormatter ' Deserilize returns the Pair object that is serialized in ' the Save method. statePair = CType(formatter.Deserialize(serializedStatePair), Pair) ViewState = statePair.First ControlState = statePair.Second reader.Close() stateStream.Close() End Sub ' Load
Available since 2.0