Hi,
    I am using a node for link creation i have specified the anchor for nodes so i can only connect to these anchor point. How can i restrict each anchor to be just a origin or destination at a time.Like if this anchor point is already used as an origin then it cannot be used as origin or as destination for same node. Also if this anchor point is already used as an destination then it cannot be used as origin or as destination for same node.

This is the code i am using for specifying anchor:
      private void diagram_NodeCreated(object sender, NodeEventArgs e)
        {

            DiagramNode Nd = e.Node;
            Color defAnch = Color.Black;
            Nd.AnchorPattern = new AnchorPattern(new AnchorPoint[]
                        {
                           new AnchorPoint(90, 50, true, true, MarkStyle.Rectangle, defAnch),
                            new AnchorPoint(10, 50, true, true, MarkStyle.Rectangle, defAnch),
                        });
        }

Now we are trying to restrict link creation at particular anchors described above using event diagram_LinkCreating.
Can you please suggest how I can do this
Thanks

Actually what i wanted was that an anchor point cannot be connect if once it has been used ,even not for the third new node, but i already have write the code for that condition , So by using your code my scenario is completed.
Thank you very much Slavcho.