title: Version 1 (Time Based) UUID in C#
body: <p>I am looking for a library to generate version 1 UUIDs in C#.
  All I am finding are snippets online like <a href="https://gist.github.com/nberardi/3759706" rel="nofollow">https://gist.github.com/nberardi/3759706</a></p>
  
  <p>Is there a de facto standard way of generating these? I am concerned that this is a very tricky algorithm and was looking for a well tested option.</p>
  
  <p>Thanks.</p>