hi Rakesh
There is The System.Collections namespace contains
interfaces and classes that define various collections of
objects, such as lists, queues, bit arrays, hashtables
and dictionaries.
You can use the ArrayList class of that namespace. This
class Implements the IList interface using an array whose
size is dynamically increased as required. Then you file
each element of these with another Arraylist , this way
you will get the tree structure.
Or , you can use CollectionBase class of the same name
space . this one Provides the abstract base class for a
strongly typed collection. Use it to implement your own
tree. i hope this helps
mohamoss