A method that will handle the ChartToolTipController.ToolTipOpening event.
public delegate void ToolTipOpeningEventHandler( object sender, ChartToolTipEventArgs e );
Public Delegate Sub ToolTipOpeningEventHandler( sender As Object, e As ChartToolTipEventArgs )
The event source. This parameter identifies the ChartToolTipController which raised the event.
A ChartToolTipEventArgs object which contains event data.
When creating a ToolTipOpeningEventHandler delegate, you identify the method that will handle the corresponding event. To associate an event with your event handler, add a delegate instance to this event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Events and Delegates in MSDN.