How do i make the progress bar start when the user clicks a button.

First off excuse me if there is already a thread covering this out there (and if this is in the wrong place... not the first time today i have done this). I am new to VB however not new to C++ although that isnt the point. I would like to know how to make a pogress bar start loading on a click of a button. 

So on the click of the "Login button" which name is Button1 or something similar, i want the progress bar to start to load. Not its actual progress but the time i have set it to run. Note: The ProgressBar works but MVS set it to run as soon as the program runs without any user interaction whatsoever.

So an over all review is how can i get the ProgressBar to start loading on the user clicking the button?