title: Namespace, folders and classes in visual studio 2013
body: <p>I have a solution with about four projects in them. A main or startup project and child projects. The startup project is basically the MDI form which has the menus and the child projects are called from this main project menus. In this wise, the main MDI project has references from the child projects. For instance, in the MDI reference folder are the following child projects dlls, Business.child.DAL, Business.child.Views, Business.child.BL, Business.child.BI.
  Now in the MDI</p>
  
  <pre><code>using Business.child.DAL
  using Business.child.Views
  using Business.child.BL
  using Business.child.BI
  </code></pre>
  
  <p>Now what is happening is, the BL and BI are not coming up when you type using  Buinsess.child...., the BL and BI does not appear. So the classes in the BL is not accessible now. I can't figure out what is happening and I need help here. 
  Thanks good people.</p>