title: Class Library Project not referenced in WebAPI Project using 3 tier architecture web application
body: <p>I have a web application with n-tier architecture. All the POCO classes are in a class-library project named EntityFramework and the DBContext class named DB. And another project is WebAPI with all the API controllers. I added the following code in my WebAPI controller:</p>
  
  <pre><code>    using EntityFramework;
      namespace WebAPI
      {
       private DB db = new DB();
      }
  </code></pre>
  
  <p>Although I have added the reference of EntityFramework in WebAPI but still the line 'using EntityFramework;' has the red wavy underline and DB object cannot be created.</p>