Hello Pascal,
Thank you for reporting this. To workaround this exception, we can create a custom class that derives from RadDiagramConnection and suppress the update while the connection is currently updating.
public class CustomConnection : RadDiagramConnection
{
private bool isUpdating = false;
protected override void Update(bool isManipulating = false)
{
if (isUpdating)
{
return;
}
isUpdating = true;
base.Update(isManipulating);
isUpdating = false;
}
}
Regards,
Dinko | Tech Support Engineer
Progress Telerik