title: The name 'Sitecore' does not exist in the current context
body: <p>I have a new instance of Sitecore 9. I'm trying to create my first component, an ascx file with a codebehind file, and I have this line:</p>
  
  <pre><code>var item = Sitecore.Context.Item;
  </code></pre>
  
  <p>The build is failing with the error "The name 'Sitecore' does not exist in the current context"</p>