title: Where I can find Microsoft.DirectX assembly to reference
body: <p>I am wondering where I can find <code>Microsoft.DirectX</code> assembly to reference?</p>
  
  <p>It seems like MS Windows 7 has DirectX installed but I cannot find this assembly using Reference Manager Window of Visual Studio 2015.</p>
  
  <p>Any clue what should be installed?</p>