Hi Peter,
I regret for the delay in getting back to you on this issue.
'The cancellation of the connector movement using the AllowMove property is failing' is suspected to be a defect and we have notified our development team on this regard. We will update you once we hear back from them. This can be achieved on other way as shown here.
[C#]
this.DiagramWebControl1.Model.EventSink.PinPointChanging += new PinPointChangingEventHandler(EventSink_PinPointChanging);
void EventSink_PinPointChanging(PinPointChangingEventArgs evtArgs)
{
LineConnector con = evtArgs.NodeAffected as LineConnector;
if (con is LineConnector)
evtArgs.Cancel = true;
}
http://websamples.syncfusion.com/samples/Diagram.Web/5.2.0.25/F69142/main.htmPlease try this and let me know if this helps.
Regards,
Nanda