call One Control index to another Control index using C#.net

Hi,
How to call One Control index to another Control index using C#.net for Windows Application?

The following controls are used in my Project:
Picture Box and Timer.
In these controls are created dynamically.
My Question is:
How to call a Picture Box index value in Timer tick event.?Please give an Idea ...

Timer one will tick when user clicks picture Box one
Timer two will tick when user clicks picture Box two
it will go up to loop end..
One condition:
Second timer will tick when First Timer finished. So how to do this ?Please Help Me...
Regards,
Lakshmi Narayanan.S