I am using treeview to display some hierarchical data from database.It is possible to expand the treeview to about 20 levels but On trying to refresh the treeview by using a collection object (to store all those nodes that where expanded prior to refresh )I faced the problem like it was not invoking the Treeview Expand method after the 10th level of expansion.

While debugging I got the error message "Out Of Memory"

Can anybody plz tell me it coz of the collection's limitation or some other issue.

Thanks
Vidhi