Return Selected Value from Dynamic DropDrownList Custom Control

Question

I have created a custom server control to dynamically populate the number of dropdownlist required by the web application. I am using *.ascx wif codebehind. The population of dropdownlists is done within a placeholder control. But i am unable to capture the values selected by the user from the dynamic dropdownlists. Is there anyway to do it? Pls let mi know. Thanx u...