collection change is not working

[RakhiS]

Hi, 

When I am dropping the node into the diagrm space, it should fire collection change , it fires but it is not finding instanceof Node not the instanceof Connector. Please help where I am wrong

[Shyam G]

Hi Rakhi, 

Please set the arguments state as Changed to resolve your issue. Please refer to a code example and the sample below. 

Code example: 

  public collectionChange(args: ICollectionChangeEventArgs) { 

     if(args.state === 'Changed' && args.type === 'Addition') {  

       let changedObj = args.element; 

       if(changedObj instanceof Node) { 

         let nodeId = changedObj.id; 

       } else if(changedObj instanceof Connector) { 

         let connectorId = changedObj.id; 

       } 

     } 

  } 

Sample: https://stackblitz.com/edit/angular-quhhcf-56jv5k?file=app.component.ts 

Regards, 

Shyam G