How to get notification when zooming and panning the WPF Diagram (SfDiagram)?

The ViewPort of WPF Diagram (SfDiagram) is updated or changed while performing zoom and pan interactions in WPF Diagram (SfDiagram). The ViewPortChanged event will get invoked when View port changes happed in diagram. This event arguments contains information about changes in the diagram and cause of changes.

Refer to the following code example.

C#

// Register the ViewPortChangedEvent
(diagram.Info as IGraphInfo).ViewPortChangedEvent += MainWindow_ViewPortChangedEvent;
 
// Event when Zooming
void MainWindow_ViewPortChangedEvent(object sender, ChangeEventArgs<object, ScrollChanged> args)
{
  // Values from Arguments of Event
  // ContentBounds, CurrentZoom, MaxZoom, MinZoom, PageBounds, ScrollFactor, ViewPort, ZoomFactor
}
 

Conclusion

I hope you enjoyed learning about how to get notification when zooming and panning the WPF Diagram (SfDiagram).

You can refer to our WPF Diagram feature tour page to know about its other groundbreaking feature representations. You can also explore our documentation to understand how to create and manipulate data.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion®, you can try our 30-day free trial to check out our other controls.

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!