Code

private void AlignOutLinks(DiagramNode node)
{
	RectangleF r = node.Bounds;
	foreach (DiagramLink link in node.OutgoingLinks)
	{
		link.AutoRoute = false;
		link.SegmentCount = 2;
		if (link.Destination.GetCenter().X > r.Right)
		{
			PointF p1 = new PointF(r.Right, r.Y + r.Height / 2);
			PointF p2 = new PointF(p1.X + 10, p1.Y);
			link.ControlPoints[0] = p1;
			link.ControlPoints[1] = p2;
			link.UpdateFromPoints();
		}
		if (link.Destination.GetCenter().X < r.Left)
		{
			PointF p1 = new PointF(r.Left, r.Y + r.Height / 2);
			PointF p2 = new PointF(p1.X - 10, p1.Y);
			link.ControlPoints[0] = p1;
			link.ControlPoints[1] = p2;
			link.UpdateFromPoints();
		}
		// add cases for destination nodes above and below if necessary
	}
}

private void AlignInLinks(DiagramNode node)
{
	RectangleF r = node.Bounds;
	foreach (DiagramLink link in node.IncomingLinks)
	{
		link.AutoRoute = false;
		link.SegmentCount = 2;
		if (link.Origin.GetCenter().X > r.Right)
		{
			PointF p1 = new PointF(r.Right, r.Y + r.Height / 2);
			PointF p2 = new PointF(p1.X + 10, p1.Y);
			link.ControlPoints[2] = p1;
			link.ControlPoints[1] = p2;
			link.UpdateFromPoints();
		}
		if (link.Origin.GetCenter().X < r.Left)
		{
			PointF p1 = new PointF(r.Left, r.Y + r.Height / 2);
			PointF p2 = new PointF(p1.X - 10, p1.Y);
			link.ControlPoints[2] = p1;
			link.ControlPoints[1] = p2;
			link.UpdateFromPoints();
		}
		// add cases for origin nodes above and below if necessary
	}
}