Hi Sree,
Thanks for contacting Syncfusion Support.
We have analyzed your query and the attached demo. We are unable to provide support as you have used 3rd party TreeView product, we will provide support for our Syncfusion products. So, we suggest you to use our ejTreeView product.
Refer below links to know the details about our ejTreeView component in Angular2.
Regards,
Balamurugan P