show picture at dynamically created picture box by button cl

Question

I have dynamically created a tab control in which i add a tab page and in the tab page i add a picture box

how can i show a image on this picture box

at Click of a button

the error i get is

The name 'picturebox1' does not exist in the current context

i know to show picture on to picturebox but here i m stucked at how can i set image for a dynamically created picture box