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Control.IsTrackingViewState Property

Gets a value that indicates whether the server control is saving changes to its view state.

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

protected:
property bool IsTrackingViewState {
	bool get ();
}
/** @property */
protected boolean get_IsTrackingViewState ()

protected function get IsTrackingViewState () : boolean

Not applicable.

Property Value

true if the control is marked to save its state; otherwise, false.

For a sample custom server control that uses this property, see Templated Server Control and Designer Sample

The following example overrides the DataBind method in a custom ASP.NET server control. It begins by calling the base OnDataBinding method and then uses the ControlCollection object. ControlCollection.Clear method to delete all the child controls and the ClearChildViewState method to delete any saved view-state settings for those child controls. Finally, the ChildControlsCreated property is set to true. The control then uses the IsTrackingViewState property to determine whether view-state change tracking is enabled for the control. If it is not enabled, the TrackViewState method is called.

No code example is currently available or this language may not be supported.
public void DataBind()
{
    super.OnDataBinding(EventArgs.Empty);

    // Reset the control's state.
    get_Controls().Clear();

    // Check for HasChildViewState to avoid unnecessary calls to 
    // ClearChildViewState.
    if (get_HasChildViewState()) {
        ClearChildViewState();
    }
    set_ChildControlsCreated(true);
    if (!(get_IsTrackingViewState())) {
        TrackViewState();
    }
} //DataBind

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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