Hi,

Are the red circles themselves nodes without a fill?

Regards,
Slavcho

Are there transparent / invisible nodes under these circles?

Hi Bejoy,

What does the left circle represent? Mouse position while moving link's control point, and not a node being moved? Please attach a saved diagram xml file.

Regards,
Slavcho

Hello,

Refer the attached document for the detailed scenario to reproduce the issue.

I could not generate the Diagrm XML because of the following exception.

System.Runtime.Serialization.SerializationException: 'Type 'System.Windows.DataTemplate' in Assembly 'PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' is not marked as serializable.'

Can you provide some sample code for serializing?

Thank you,
BT

Hello

Yes the exception was from SaveToXml method.

Meanwhile I have observed that RoutingOptions.GridSize has some impact on this.

When I set RoutingOptions.GridSize = 0, I could not reproduce this issue of broken link. But the orientation of the link near the node is not good in this scenario. I did not get exactly how RoutingOptions.GridSize property is affect link orientation near grid. Is it possible to adjust the orientation of the link near the node always vertical to the side of the node?

It is also observed that link is broken when the node moved using mouse. This is not seen when a node is moved by changing its location and not using mouse.

Thanks
BT

Diagram settings are as below

         var gridHeight = 16;
         var gridWidth = 16;
         var routingGridSize = 8;
         byte routingTurnCost = 160;
         byte routingCrossingcosts = 5;
         var autoAlginNodes = true;
         var snapToGrid = true;
         var showGrid = true;
         byte nodeVicinityCost = 8;
         double nodeVicinitySize = 12;
         double autoAlignDistance = 32;

         LinkRouter = new GridRouter();
         RoutingOptions.Anchoring = Anchoring.Keep;
         HitTestPriority = HitTestPriority.ZOrder;
         BackBrush = Brushes.Transparent;
         SnapToAnchor = SnapToAnchor.OnCreateOrModify;
         ShowAnchors = ShowAnchors.Auto;
         RouteLinks = true;
         AllowSelfLoops = false;
         Behavior = Behavior.DrawLinks;
         AllowSplitLinks = false;
         AlignToGrid = true;
         LinkShape = LinkShape.Cascading;
         AutoSnapLinks = true;
         AutoSnapDistance = 10;
         LinkHitDistance = 3;
         MergeThreshold = 5;
         DelKeyAction = DelKeyAction.None;
         MinimumNodeSize = new Size(2, 2);
         ShowDisabledHandles = false;
         AllowUnanchoredLinks = false;
         Selection.AllowMultipleSelection = true;
         Selection.IncludeItemsIfIntersect = false;

         ModificationStart = ModificationStart.SelectedOnly;
         SelectionOnTop = false;

         AutoResize = AutoResize.None;