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IStateManager.SaveViewState Method

When implemented by a class, saves the changes to a server control's view state to an Object.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

'Declaration
Function SaveViewState As Object
'Usage
Dim instance As IStateManager
Dim returnValue As Object

returnValue = instance.SaveViewState
Object SaveViewState ()
function SaveViewState () : Object
Not applicable.

Return Value

The Object that contains the view state changes.

' Implement the SaveViewState method. If the StateBag
' that stores the MyItem class's view state contains
' a value for the message property and if the value
' has changed since the TrackViewState method was last 
' called, all view state for this class is deleted, 
' using the StateBag.Clear method,and the new value is added.
Function SaveViewState() As Object Implements IStateManager.SaveViewState
    ' Check whether the message property exists in 
    ' the ViewState property, and if it does, check
    ' whether it has changed since the most recent
    ' TrackViewState method call.
    If Not CType(_viewstate, IDictionary).Contains("message") OrElse _viewstate.IsItemDirty("message") Then
        _viewstate.Clear()
        ' Add the _message property to the StateBag.
        _viewstate.Add("message", _message)
    End If
    Return CType(_viewstate, IStateManager).SaveViewState()
End Function 'IStateManager.SaveViewState



// Implement the SaveViewState method. If the StateBag
// that stores the MyItem class's view state contains
// a value for the message property and if the value
// has changed since the TrackViewState method was last 
// called, all view state for this class is deleted, 
// using the StateBag.Clear method,and the new value is added.
public Object SaveViewState()
{
    // Check whether the message property exists in 
    // the ViewState property, and if it does, check
    // whether it has changed since the most recent
    // TrackViewState method call.
    if (!(((IDictionary)_viewState).Contains("message")) 
        || _viewState.IsItemDirty("message")) {
        {
            _viewState.Clear();
            // Add the _message property to the StateBag.
            _viewState.Add("message", _message);
        }
    }
    return ((IStateManager)_viewState).SaveViewState();
} //SaveViewState

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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