title: Convert .cs to .dll
body: <p>How can I compile a .cs file into a DLL?</p>
  
  <p>My project name is WA. In my <code>bin</code> folder after the compilation, I found:</p>
  
  <ul>
  <li><code>WA.exe</code></li>
  <li><code>WA.vshost.exe</code></li>
  <li><code>WA.pdb</code></li>
  </ul>