title: Find Usercontrol's Dropdownlist selected value on Page
body: <p>I have a User Control named <strong>UCCountry.ascx</strong>, this user control only has one dropdownlist of country. The name of my Page is <strong>MyFirstPage.aspx</strong>, on this page I have a repeater that binds the data based on the <strong>CountryId</strong> i.e <strong>MyfirstPage.aspx</strong> contains the Usercontrol.
  Now I want to know how I can bind the data when a user changes the country using the <strong>dropdownlist</strong> in the Usercontrol.</p>
  
  <p>Note: Which page life cycle event can I use to get the value of the dropdownlist and on which event do I need to bind the repeater.</p>