C#

I’m a new c# student I’ve done Java and c++. We’ve been asked to
create a c# application that uses a picture a picture box. Given all the pictures
The tricky part is to get the picture box to show the different pictures based on a combo box control. On_click/ on_select of the comboBox Item, the pitures must be randomly selected, there’s a button control that you can also use to transverse through the Items to be displayed on the picture Box, one picture Box. I know I have to use arrays for this to work but I’m a bit green when it comes to c#, so I’m not sure as to how to go about this