I'm glad you were able to find the problem. Hoepfully all will be smoothly from here.

>hi Cathi,
>
>i finally found what my problem was, i didn't add Microsoft.web.ui.webcontrols.dll into .NET Framework Components
>after i did this everything works well according the articles u gave me
>
>Now i can move forward on my project by using treeview.
>wish me luck :-P
>
>
>regards & TIA,
>
>Budi