How to update the size of a Connector's source and target decorators in the WPF Diagram (SfDiagram)?

In the WPF Diagram, you can update the size of the Connector’s source and target decorators by modifying its height and width properties in the Source or Target decorator’s style. This can be done within the SourceChangedEvent or Target ChangedEvent of the Connector. We have provided the code example for how to achieve this.

Code Snippet:

//Here diagram is the instance of the SfDiagram

(diagram.Info as IGraphInfo).ConnectorSourceChangedEvent += MainWindow_ConnectorSourceChangedEvent;

private void MainWindow_ConnectorSourceChangedEvent(object sender, ChangeEventArgs<object, ConnectorChangedEventArgs> args)
{  
if (args.NewValue.DragState == DragState.Completed)
{
    Style decoratorStyle = new Style();
    var connector = args.Item as ConnectorViewModel;
    if (connector.SourcePort != null)
    {
        Brush fillColor = new SolidColorBrush(Colors.CornflowerBlue);
        foreach (Setter setter in connector.ConnectorGeometryStyle.Setters)
        {
            if (setter.Property.Name == "Stroke")
            {
                decoratorStyle.Setters.Add(new Setter() { Property = Path.StrokeProperty, Value = fillColor });
            }
            else if (setter.Property.Name == "Fill")
            {
                decoratorStyle.Setters.Add(new Setter() { Property = Path.FillProperty, Value = fillColor });
            }
            else
            {
                decoratorStyle.Setters.Add(new Setter() { Property = Path.StretchProperty, Value = Stretch.Fill });
                decoratorStyle.Setters.Add(new Setter(Path.FillProperty, fillColor));
                decoratorStyle.Setters.Add(new Setter() { Property = Path.HeightProperty, Value = 20.0 });
                decoratorStyle.Setters.Add(new Setter { Property = Path.WidthProperty, Value = 20.0 });
                decoratorStyle.Setters.Add(setter);
            }
        }
        connector.TargetDecoratorStyle = decoratorStyle;
   }
}
} 

Conclusion
I hope you enjoyed learning about how to reduce the size of a Connector’s source and target decorators in the WPF Diagram
You can refer to our WPF Diagram feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications.

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