private void DocumentConnector_ConnectingFinished(object sender, DocumentConnectionEvent e)
 {
     if (e.ConnectionLink.Connection.Status == ConnectionStatus.Open)
     {
         SetItemNodeConnected(e.ConnectionLink.Item);
     }
     else
     {
         SetItemNodeConnectingFailed(e.ConnectionLink.Item);
     }
 }
 private void DocumentConnector_Disconnected(object sender, DocumentConnectionEvent e)
 {
     SetItemNodeDisconnected(e.ConnectionLink.Item);
 }
 private void DocumentConnector_ConnectingStarted(object sender, DocumentConnectionEvent e)
 {
     SetItemNodeConnecting(e.ConnectionLink.Item);
 }