Control.HasChildViewState Property
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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 : bool
Protected ReadOnly Property HasChildViewState As Boolean
true
if any child controls have saved view state information; otherwise, false
.
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
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.
Product | Versions |
---|---|
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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