title: Adding new Namespace in C# Project
body: <p>I want to add a new namespace to C# project, also number of classes are to be added in that newly created namespace.  </p>
  
  <p>When I right-click Solution of Project, I didn't find any link to add a new namespace, similarly by right-clicking Project-Named namespace also.  </p>
  
  <ul>
  <li><p>How to add a new namespace to existing project?   </p></li>
  <li><p>Is it necessary to have a class with Main Method in each namespace?</p></li>
  <li><p>The project name should be same as namespace name, then how to add
  new in same project?</p></li>
  </ul>