Customizing tree view features

[shashika18923]

Hi Denimar,

I am struggling to customize the tree view. So please help me to continue the development by answering the following questions.

1. How to add child node when selected parent node?
2. How to mark parent element as checked when we checked one of child element?
3. How to update the database when we add, edit or delete the node?
4. Please could you provide detailed source code for actions button?

Thanks.