How to change picture box image dynamically at runtime

I have a problem to display images in picture box from my database that have to change dynamically at runtime under some conditions .

I want step by step process explanation for my problem. Kindly help me!

Have a goo开发者_如何学God day!

Is it a push or pull model? pull: Create a timer with a certain time, when the time event fires, connect to database, retrieve picture and set picturebox.Image