Loop Through Repeater control

Here is what I want:

I have 4-5 repeatercontrols on my page.  On a click of a button I want to loop through each repeater and get its name.

For example I have

repeater1
repeater2
repeater3
repeater4

Button click event

foreach (RepeaterItem repItems in repeater1.Items)
{}

so when its the first loop i want to go through all the items of repeater1. next time around i want to go through repeater2 items and so on until it finds the last repeater on the page.

I hope I am making sense.

Thanks