How to prevent node selection programatically using Angular Diagram?

This article explains how to prevent node selection programmatically using Angular Diagram. In the Syncfusion® Angular Diagram, the selectionChange event is triggered when selecting diagram elements either through user interaction or programmatically. Within the selectionChange event, you can prevent the selection of a node by setting a boolean value. By default, this value is set to false. When a node is dynamically selected, this boolean value is set to true.

Based on this boolean value, the selection of the node is restricted within the selectionChange event by setting the args.cancel property to true. This prevents the node from being selected.

 public isSelect: boolean = false;
 public selectionChange(args: ISelectionChangeEventArgs): void {
       if (this.isSelect === true) {
         //Do your logic
         args.cancel = true;
       }
       this.isSelect = false;
     }

Refer to the working sample for additional details and implementation: Sample

Conclusion

We hope you enjoyed learning about how to prevent node selection programmatically using Angular Diagram.

You can refer to our Angular Diagram feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Angular Diagram example to understand how to create and manipulate data.

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