Control.HasChildViewState Property

 
System_CAPS_noteNote

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Gets a value indicating whether the current server control's child controls have any saved view-state settings.

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

protected bool HasChildViewState { get; }

Property Value

Type: System.Boolean

true if any child controls have saved view state information; otherwise, false.

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.

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();
}

.NET Framework
Available since 1.1
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