title: oAuth 2.0 API Consumption via C#
body: <p>Our client had a requirement to integrate their API with the website that we are developing for them. And the API authentication is done via oAuth 2.0. They have provided all the necessary info as to (Client ID, Client Secret, Token Uri etc).</p>
  
  <p>However we have hard time understanding the code snippet to call this via C#. We know we have to request a request token and attach that to header for the subsequent requests. We tried DotNetOpenAuth and Owin, but unable to find the actual code to implement this/did not succeed so far.
  Can any one help me with a small piece of C# code to achieve this?</p>