method has multiple overloads that allow you to customize the export. One of the overloads allow you to define a portion of the diagram to be exported through a Rect
sender, RoutedEventArgs e)
(var stream = File.Open(@
You can read more about the overloads of the method in our documentation
I am not sure if I properly understand your case and scenario, but you should be able to use the overload of the method to export only the center portion of your diagram.
Please give this a try and let us know if it helps.
the Telerik team