How to prevent UI from freezing during lengthy process?

Question

I need to write a VB.Net 2008 applet to go through all the fixed-drives looking for some files. If I put the code in ButtonClick(), the UI freezes until the code is done:

Answer 1

Put the process into a separate thread.... ...using the BackgroundWorker component.

Disable UI components that should not be usable while the process workd.

Finished - the UI will still be responsive.