How to access values of controls defined in a User Control

Hello everybody,
I am developing an application in which I have to use a User Control.I have created a user control in which I am using
               - A Label (whose text will be dynamic)
               - 3 Textboxes (whose values will be also dynamic).


So far everything is working fine.Now I used this user control in a aspx page and at the page_load i have to loop thru all the instance of this user control and assign values to them and here  the problem begins.The values are not being assigned to the controls.
Here is the code which i have written to loop thru User Control instances and assign values to them.Please help me out what I am doing wrong here..
Here DriverCollection is UserControl.

foreach (Control control in Page.Form.Controls)
     &nb ...