Way To Hotkey A Button

Well after looking around Youtube, here, various other sites, microsoft, etc, I still havn't been able to get a straight, working answer. How do I make it so that the following happens:User enters text into textbox.User has pressed enter which activates button1 as if user pressed button1. which in turn activates button1's code.

That's all I want to do. I'm writing a very basic (only just got into Visual Basic) that simply searches the text that you input via google. I don't want to hit alt+enter or F12 or anything of the sort. All I'm looking for is for once the user has finished typing their search in the textbox they can simply hit "enter" and the "enter" button (button1) acts as if it were clicked and then the search term is ran through google. Now I have all the code working perfectly except for this "enter" hotkey.