Gordon,

>So I slow down my typing and it works. I do realize that this is not proper behavior but at the time, I thought this was the only way to do this kind of search.

This appears to be an artifact of the excessive size of your listbox, that UI component is really designed to have a few hundred items at most.

>With that said. Your insight into the Grid with a textbox(???) incremental search sounds very promising. How does this work?

You can format the grid to make it look like a listbox. You replace the default text1 textbox with an incremental seek textbox subclass (you can search the files section here for one). The subclass hooks the InteractiveChange or KeyPress events and it does a SEEK on the underlying datasource. This works great.

You might also use a UI where the user types into a textbox SMI and on LostFocus that does a query to pull the rows that match SMI into a listbox.