Create hierarchical tree by index

Question

Hello Friends

 

I want to create tree structure like following structure using C#

 

1

   -  2

      - 3

      - 3

         - 4

   -  2

      - 3

 

1

   - 2

      - 3

      - 3

         - 4

   - 2

      - 3

 

 

 thanks in advanced