title: wpf - Get values from App Config file
body: <p>How to get values from App.Config.</p>
  
  <p>Code:</p>
  
  <pre><code> &lt;configuration&gt;
    &lt;appSettings&gt;
     &lt;add key="ShowRoomCode" value="1000"/&gt;
     &lt;add key="FolderPath" value="D:\\Images\\Book\\"/&gt;
    &lt;/appSettings&gt;
   &lt;/configuration&gt;
  
   string imageFolderPath = ConfigurationManager.AppSettings["FolderPath"];
  </code></pre>
  
  <p>But it returns null value. Config file is in the Same project.</p>