There are a few ways to accomplish your scenario, I will try to list them for your and you could pick the one most suited for your scenario:
- create a custom connectors, you can find information on how to them in this article
- use the loaded event of the Shapes or the collection change event of the RadDiagram, you will need to traverse the Connectors collection and change the Visibility of all Connectors different than the "Auto".
- use an implicit style targeting the "ConnectorsControl" and change its default panel. In the Arrange of the new panel you will have direct access to the Connectors and you could change their visibility to collapse.
I hope this information helps. Please let us know if you need further assistance.
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