Hello Linh,

I have been looking into this issue more thoroughly and can conclude that this is not a bug. The issue appears because you have simply added a Line to the SceneGraph without restricting the way it is drawn. The event is exposed in order to enable the user to add a wide functionality and this is why there are no restriction added to it.

What you can do in order to enclose it in a visible bound is add a GraphicsContext before adding the Line and set its ClipBounds to match the ChartLayer like so:

GraphicsContext gc = new GraphicsContext();

gc.SetClipBounds(e.ChartCore.GetChartLayer().OuterBound);

e.SceneGraph.Add(gc);

Hope this makes things clearer.

Please let me know if you require any further assistance on the matter.

Sincerely,

Petar Monov

Developer Support Engineer

Infragistics Bulgaria

www.infragistics.com/support