>>Brian,
>>I have filled it with over 30000 nodes. The performance hit I saw was when loading and then again when unloading the form. The loading is due to 1000s of nodes having to be created. The unloading is due to 1000s of nodes having to be destroyed.
>>
>>I didn't see a performance hit during its use but that may be machine specific (P3/733, 265MB RAM, Win2K on test system).
>
>Larry,
>
>That's good to know. We still have lots of <500mhz machines out there. I think I'll just load the root nodes and then load children during the expand event.
>
>Thanks!

Brian,
That's exactly what we do now. The performance hit is when an administrator (like myself) logs in. Administrators have 1000s of "root" nodes.

When dealing with regular users with 10 to 400 root nodes, you can't tell there is a delay when the form instantiates.