treeview

Question

I have a table like

SUBCATEGORY_ID	PARENTSUBCATEGORY_ID	CATEGORY_ID
1	0	10
2	0	9
3	0	1
4	1	10
5	1	10
6	0	8
7	0	7
8	6	8

I want to display these data like this using treeview

categoryid
  subcategoryid
  childsubcategoryid

how i do this?
this table data may increase when adding subcatergory.
i have to use entity framewok fo this.
how i do this?
Is there a friend to help this one
thanks

how I do this in entity framework