View the new node added to a tree

Hi…

I am working on data having tree structure. I did the insertion of

new node to the tree. After inserting I need to show the tree with the
new node.

For example:

At first the tree looks like:
- Root
- Node 1
Node 1.1
- Node 1.2
Node 1.2.1
Node 1.2.2
+ Node 2

I inserted a new node Node 1.1.1 under Node 1.1. After inserting this
node I need to show the tree as follows:
- Root
- Node 1
- Node 1.1
Node 1.1.1
- Node 1.2
Node 1.2.1
Node 1.2.2
+ Node 2

A ‘-’ sign appears before Node 1.1, also the new node Node 1.1.1 is
shown under Node 1.1

How will I achieve this? Please help me.

Thanks
Regards
Suneeta