Code

private void RouteConnections()
        {
            fc.RoutingOptions.TriggerRerouting = RerouteArrows.WhenIntersectNode;
            fc.RoutingOptions.CrossingCost = 40;
            fc.RoutingOptions.Anchoring = Anchoring.Reassign;
            fc.RoutingOptions.EndOrientation = MindFusion.Diagramming.WinForms.Orientation.Auto;
            fc.RoutingOptions.LengthCost = 1;
            fc.RoutingOptions.TurnCost = 50;

            fc.RoutingOptions.NodeVicinityCost = 150;
            fc.RoutingOptions.NodeVicinitySize = 30;
            fc.RoutingOptions.GridSize = 2F; //org 2F

            fc.RouteAllArrows(); //execute
            fc.FitDocToObjects(2);//fit the document size
            fc.ZoomToFit(); //zoom to fit diagram to page
        }
 

Code

private void AddConnection(Box box1, Box box2)
        {
            Arrow link = fc.CreateArrow(box1, box2);
            link.Style = ArrowStyle.Cascading;
            link.ArrowHead = ArrowHead.Reversed;
            link.ShadowColor = System.Drawing.Color.White;
            link.AutoRoute = true;
            link.DrawCrossings = false;
            link.Selected = false;
            link.Dynamic = true;
        }