How to Identify the Dragging State of Connectors in the WPF Diagram?

In the WPF Diagram, you can identify the state of connectors by using the ConnectorSourceChangedEvent and ConnectorTargetChangedEvent. These events provide a property called DragState, which allows you to verify if a connector is currently in the Dragging state. Below is the provided code snippet that demonstrates how to achieve this.

Code Snippet:

//Here the diagram is the instance of the SfDiagram

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


       private void MainWindow_ConnectorTargetChangedEvent(object sender, ChangeEventArgs<object, ConnectorChangedEventArgs> args)
       {
           // To get which connector's target is changed
           ConnectorViewModel connector = args.Item as ConnectorViewModel;

           // Based on DragState we can know the states like Starting, Started, Dragging, and Completed.
           if(args.NewValue.DragState == DragState.Dragging)
           {

           }
       }

       private void MainWindow_ConnectorSourceChangedEvent(object sender, ChangeEventArgs<object, ConnectorChangedEventArgs> args)
       {
           // To get which connector's source is changed
           ConnectorViewModel connector = args.Item as ConnectorViewModel;

           // Based on DragState we can know the states like Starting, Started, Dragging, and Completed.
           if (args.NewValue.DragState == DragState.Dragging)
           {

           }
       } 

Conclusion
I hope you enjoyed learning about how to identify the dragging state of connectors in the WPF Diagram.
You can refer to our WPF Diagram feature tour page to learn about its other groundbreaking feature representations and documentation, You can also explore our WPF Diagram example to understand how to create and manipulate data.

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