title: AJAX ScriptManager in UserControl
body: <p>I have a UserControl that contains an UpdatePanel which wraps some other controls. The UserControl will be used on some pages that already have a ScriptManager and other pages that do not have a ScriptManager. I'd like the UserControl to automatically bring its own ScriptManager if one does not exist.</p>
  
  <p>I have tried ScriptManager.GetCurrent and if it returns null i create my own ScriptManager and insert it into the Form but I can't find a place early enough in the UserControl's lifecycle to run this code. I keep getting the error "The control with ID 'uPnlContentList' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it." every time i try loading the page. The places i've tried running my code are OnInit, CreateChildControls and PageLoad and they never get called because it dies before reaching them.</p>
  
  <p>Where should I put this check?</p>