Control.HasChildViewState Property
Definition
Important
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Gets a value indicating whether the current server control's child controls have any saved view-state settings.
protected:
property bool HasChildViewState { bool get(); };protected bool HasChildViewState { get; }member this.HasChildViewState : boolProtected ReadOnly Property HasChildViewState As BooleanProperty Value
true if any child controls have saved view state information; otherwise, false.
Examples
public override void DataBind()
{
base.OnDataBinding(EventArgs.Empty);
// Reset the control's state.
Controls.Clear();
// Check for HasChildViewState to avoid unnecessary calls to ClearChildViewState.
if (HasChildViewState)
ClearChildViewState();
ChildControlsCreated = true;
if (!IsTrackingViewState)
TrackViewState();
}
Public Overrides Sub DataBind()
MyBase.OnDataBinding(EventArgs.Empty)
' Reset the control's state.
Controls.Clear()
' Check for HasChildViewState to avoid unnecessary calls to ClearChildViewState.
If HasChildViewState Then
ClearChildViewState()
End If
ChildControlsCreated = True
If Not IsTrackingViewState Then
TrackViewState()
End If
End Sub
Remarks
You can avoid unnecessary calls to the ClearChildViewState method by using this property to verify that any child controls of the server control are storing view-state information.
