Show search result in dropdown not in a gridview

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VB

Hi everyone,
I have 2 problems, please help me if it is possible. I am a newbie.
Following are my questions

1. I want to make a component(user control) for search in my program like this:
I don't want to use gridview to see search result. I want to use dropdown menu. if I type a word in textbox, result should show in dropdown menu(like google dropdown menu).

2- If everyone click on special folder (for e.g. MyAutoRunfolder), My program runs and, do something special like show picture and play music.

Thanks a lot.