We are not very sure what is your actual issue, maybe any snapshots / pictures will help us better understand it. However, we strongly recommend you to try out two features of the Diagram:
- Use FitTo() method instead of Autofit(). FitTo() zooms and Pans the diagram to a given Rect given as parameter to the function. You can give the Diagram.ViewPort for instance.
- Try Extending the default Zoom constants. This can be achieved by setting:
DiagramConstants.MinZoom = 0.01;
DiagramConstants.MaxZoom = 10;
in InitializedComponent (before loading of the Diagram).
We hope these tricks can help in your scenario. Let us know how it goes.
All the best,
the Telerik team