Code

private void Form1_Load(object sender, System.EventArgs e)
{
	...
	ll.Arrange(diagram);

	AlignPath(ll.LayerDistance, 0, 1, 3, 5);

	OrthogonalRouter router = new OrthogonalRouter();
	router.Arrange(diagram);
}

private void AlignPath(float layerDist, params int[] nodes)
{
	DiagramNode first = diagram.Nodes[nodes[0]];
	float x = first.GetCenter().X;

	for (int i = 1; i < nodes.Length; ++i)
	{
		DiagramNode node = diagram.Nodes[nodes[i]];
		AlignLayer(node, x, layerDist);
	}
}

private void AlignLayer(DiagramNode pathNode, float x, float layerDist)
{
	float offsetX = x - pathNode.GetCenter().X;
	List<DiagramNode> layer = new List<DiagramNode>();
	foreach (DiagramNode node in diagram.Nodes)
	{
		if (Math.Abs(pathNode.Bounds.Top - node.Bounds.Top) < layerDist / 2)
			layer.Add(node);
	}
	foreach (DiagramNode node in layer)
	{
		RectangleF r = node.Bounds;
		r.X += offsetX;
		node.Bounds = r;
	}
}
 

Code

TcChartNode node = new TcChartNode(dg, ap, av);
node.Bounds = new RectangleF(10, 10, 120, 70);
node.AnchorPattern = AnchorPattern.TopInBottomOut;
node.Obstacle = true;

LayeredLayout ll = new LayeredLayout();
ll.EnableCustomLayers = true;
ll.NodeDistance = 200;
ll.Arrange(dg);

OrthogonalRouter router = new OrthogonalRouter();
router.Arrange(dg);

dg.RoutingOptions.Anchoring = Anchoring.Reassign;
dg.RouteAllLinks();