I'd like to customize the look and feel of links on my diagram. Overall the default style isn't bad - at the moment I just want to customize the thickness and color of the links.

I've tried two ways of doing this. First, on my diagram object I have the following line of code:

diagram.LinkBrush = new SolidBrush(Color.FromRgb(255, 0, 0));
 

This didn't have any effect on the color of the links. However, I did notice that the LinkBrush property is now obsolete, so I tried the suggested way of using a theme. This is my code for that:

MindFusion.Diagramming.Theme diagram_theme = new MindFusion.Diagramming.Theme();
MindFusion.Diagramming.DiagramLinkStyle diagram_link_style = new MindFusion.Diagramming.DiagramLinkStyle();
diagram_link_style.Stroke = new SolidBrush(Color.FromRgb(255, 0, 0));
diagram_link_style.StrokeThickness = 1;
diagram_theme.RegisterStyle(typeof(MindFusion.Diagramming.DiagramLink), diagram_link_style);
diagram.Theme = diagram_theme;
 

This also didn't seem to have any effect on the links in my diagram. Currently the default color of the links is a dark green color (as seen in the attached image).

For now this is all I am trying to accomplish, however, in the future I'd actually like to have custom link styles based upon the nodes that the link is connected to. I assume that in order to do this, I'll likely need to set the CustomDraw property of the diagram? Or handle the DrawLink event?

DiagramLink.Brush initialized from LinkBrush is used to fill arrowheads. Try setting LinkPen or DiagramLink.Pen instead. Make sure link's Brush / Pen are null in order to query values from styles or themes.

We'll check joints in DrawLines for next release. For time being try if DrawPath works better.

Regards,
Slavcho
Mindfusion