title: Framework Upgrade to 3.5
body: <p>I have a project which references another project's dll. They both were in .net framework 2.0. </p>
  
  <p>So upgraded both to 3.5, but when I go to reference for second project(the one referencing the first project) it still says on properties runtime version 2.0, even though I deleted the reference and readded.</p>
  
  <ol>
  <li><p>How would I determine if the referenced dll is the upgraded one, before deploying to server where it has version 2.0?</p></li>
  <li><p>I don't want to delete all files in server and deploy, after upgrading do I need to check the config files are referencing same dlls and deploy published files or it needs replacing all together?</p></li>
  </ol>