asp.net vb 2008: searching in grid results

We have a client who wants the following:

1. display all equipment in a grid
2. when entering a search string in two textboxes which target different columns, automatically search on either entered string
3. grid holds approximately 5000 items and must be paged and header-sortable

I have just made the very unwelcome discovery that the FindItemWithText met开发者_开发问答hod is not available in an ASP Listview.

QUESTIONS:

What is the best data container to use to enable this kind of searching?

How can it be implemented?

THANKS

Infragistics webdatagrid would be your best bet. It's darn expensive, but one heck of a component to have in your arsenal.