Pass multiple components to single function

Question

I have no idea how to pass a large amount of objects to a single function.  I have multiple textboxes that I need to compare.  I want to write a generic function that checks to see if a textbox.text is between two values.  I have to do this for 20 or so boxes.  I can use the a textbox by name but how do I make a list of specific text boxes and then either pass them one by one in a loop?