Is there a way to check for errors in unopened *.ASPX pages. For example, if you change the name of a function Visual Studio will catch the error on the page and list it in the "Error List" only if the page is opened and being validated?

I guess the question could be is there a validation option opposed to the compile option to check for errors?

(Yes, i know code should go into the pre-compiled code-behind pages.)

How do i find out about the following without running the page through the webserver or opening the page to be validated in VS?

<script runat="server">
     Public Sub MyFunciton() 
         Undefined_FUNCTION()
     End Sub
 </script>