c# - Controlling a PictureBox from a class -

i have little project in c#, (windows forms application). have on form 77 pictureboxes (picturebox1, picturebox2, picturebox3, ...) , want control them new class (access.cs), declaring new 1 picturebox in class control pictures.

because long if pass through each picturebox , add click method , copy + paste code , change picturebox number each time.

i've set pictures public , tried following code:

access.cs:

using system.windows.forms;  public class access {     picturebox picbox = new picturebox();      public void pictureclicked()     {         picbox.image = properties.resources.apple;     } } 

form1.cs:

private void picturebox1_click(object sender, eventargs e) {     access ac = new access();     ac.pictureclicked(); } 

but code didn't work!!

i dont want try send object access class:

private void picturebox1_click(object sender, eventargs e) {     access ac = new access();     ac.pictureclicked(sender); }    public void pictureclicked(object sender) {            picbox = (picturebox)sender;            picbox.image = properties.resources.apple;  }