C# Class ClassLibrary.Common.SuspensionManager

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Public Methods

Method	Description
RegisterFrame ( Frame frame, String sessionStateKey ) : void	Registers a Frame instance to allow its navigation history to be saved to and restored from SessionState. Frames should be registered once immediately after creation if they will participate in session state management. Upon registration if state has already been restored for the specified key the navigation history will immediately be restored. Subsequent invocations of RestoreAsync will also restore navigation history.
RestoreAsync ( ) : System.Threading.Tasks.Task	Restores previously saved SessionState. Any Frame instances registered with RegisterFrame will also restore their prior navigation state, which in turn gives their active Page an opportunity restore its state.
SaveAsync ( ) : System.Threading.Tasks.Task	Save the current SessionState. Any Frame instances registered with RegisterFrame will also preserve their current navigation stack, which in turn gives their active Page an opportunity to save its state.
SessionStateForFrame ( Frame frame ) : Object>.Dictionary	Provides storage for session state associated with the specified Frame. Frames that have been previously registered with RegisterFrame have their session state saved and restored automatically as a part of the global SessionState. Frames that are not registered have transient state that can still be useful when restoring pages that have been discarded from the navigation cache. Apps may choose to rely on LayoutAwarePage to manage page-specific state instead of working with frame session state directly.
UnregisterFrame ( Frame frame ) : void	Disassociates a Frame previously registered by RegisterFrame from SessionState. Any navigation state previously captured will be removed.

Private Methods

Method	Description
RestoreFrameNavigationState ( Frame frame ) : void
SaveFrameNavigationState ( Frame frame ) : void

Method Details

RegisterFrame() public static method

Registers a Frame instance to allow its navigation history to be saved to and restored from SessionState. Frames should be registered once immediately after creation if they will participate in session state management. Upon registration if state has already been restored for the specified key the navigation history will immediately be restored. Subsequent invocations of RestoreAsync will also restore navigation history.

public static RegisterFrame ( Frame frame, String sessionStateKey ) : void
frame	Windows.UI.Xaml.Controls.Frame	An instance whose navigation history should be managed by ///
sessionStateKey	String	A unique key into used to /// store navigation-related information.
return	void

RestoreAsync() public static method

Restores previously saved SessionState. Any Frame instances registered with RegisterFrame will also restore their prior navigation state, which in turn gives their active Page an opportunity restore its state.

public static RestoreAsync ( ) : System.Threading.Tasks.Task
return	System.Threading.Tasks.Task

SaveAsync() public static method

Save the current SessionState. Any Frame instances registered with RegisterFrame will also preserve their current navigation stack, which in turn gives their active Page an opportunity to save its state.

public static SaveAsync ( ) : System.Threading.Tasks.Task
return	System.Threading.Tasks.Task

SessionStateForFrame() public static method

Provides storage for session state associated with the specified Frame. Frames that have been previously registered with RegisterFrame have their session state saved and restored automatically as a part of the global SessionState. Frames that are not registered have transient state that can still be useful when restoring pages that have been discarded from the navigation cache.

Apps may choose to rely on LayoutAwarePage to manage page-specific state instead of working with frame session state directly.

public static SessionStateForFrame ( Frame frame ) : Object>.Dictionary
frame	Windows.UI.Xaml.Controls.Frame	The instance for which session state is desired.
return	Object>.Dictionary

UnregisterFrame() public static method

Disassociates a Frame previously registered by RegisterFrame from SessionState. Any navigation state previously captured will be removed.

public static UnregisterFrame ( Frame frame ) : void
frame	Windows.UI.Xaml.Controls.Frame	An instance whose navigation history should no longer be /// managed.
return	void