Hi,

i'm having some trouble with the link text displayed to the user.
I'm changing the FontWeight to Heavy and setting Textbrush to Black, if a Link gets selected.

Sometimes it is happening, that the Link Text is disappearing. But if i drag and drop that particular Link, the Text gets displayed with the correct settings as mentioned.

Some ideas what could be the reason for this?

Thanks,
Dom

Thanks for your Reply. Calling UpdateFromPoints unfortunatelly didn't solve the Problem.
But calling Layout.Arrange after Selecting a Link did.

But i'm not quite sure if this is the best way. I'm feeling like i am throwing rocks for hitting a needle. 
In German you would say (translated free) Shooting with canons after birds.

Maybe you have another idea?

I am displaying the link text by setting link.text Property.
I don't have any custom draw method.
The links are (of course) connected to shapenodes which are added to different SwimlaneLayoutTrait Lanes.

i am using LinkTextStyle = LinkTextStyle.Rotate;

Here are my whole diagram settings i am initialy applying.

                diagram.Behavior = Behavior.DrawShapes | Behavior.LinkShapes;

            diagram.RouteLinks = true;
            diagram.LinkRouter = new GridRouter();
            diagram.LinkRouter.Diagram = diagram;

            diagram.Width = 3840;
            diagram.Height = 3840;
            diagram.Bounds = new Rect(0, 0, 3840, 3840);
            diagram.DelKeyAction = DelKeyAction.None;

            diagram.AllowInplaceEdit = true;
            diagram.AllowSelfLoops = false;
            diagram.RestrictItemsToBounds = RestrictToBounds.InsideOnly;

            diagram.LinkTextStyle = LinkTextStyle.Rotate;
            diagram.LinkShape = LinkShape.Bezier;
            diagram.CrossingRadius = 20;
            diagram.LinkCrossings = LinkCrossings.Straight;
            diagram.AllowMultipleResize = true;
            diagram.RoundedLinks = false;

            diagram.NodeEffects.Add(new GlassEffect());
            diagram.NodeEffects.Add(new AeroEffect());

            diagram.ShowAnchors = ShowAnchors.Always; 

And these are the link settings for every link

                link.AutoSnapToNode = false;
                link.UseLayoutRounding = false;
                link.DrawCrossings = true;
                link.Dynamic = false;
                link.Shape = LinkShape.Cascading;
                link.TextStyle = LinkTextStyle.Rotate;
                link.IgnoreLayout = false;
                link.TextBrush = Brushes.Gray;
                link.Stroke = Brushes.Gray;
                link.HeadStroke = Brushes.Gray; 

i tried with
link.UpdateFromPoints();
link.InvalidateMeasure();

as you have mentioned, but it didn't change the result.

I discovered, it must have some to do with the FontWeight set to Heavy or Bold.

If i don't set the FontWeight, the text is displayed at every time and is not disappearing as it at some particular links does (not at all of them inside the diagram) if i set FontWeight.
Maybe something with measuring the heigth of the link text ?
But this should get fixed by link.UpdateFromPoints();
link.InvalidateMeasure();, right ?

How do i save it?