Egg like timer

Question

I am new vb.net user. I am attempting to create a timer which is started when a button is clicked and stopped when another button is clicked. The timer should be in the form of 00:00:00- hrs,mins,secs. The timer should be visually incrementing. I have no idea how to do this. This may be simple to someone else. I have no code as such but have spent 2 weeks looking for something on the internet with no luck. So can anybody please help me out?