title: How to get the first enum value irrespective of the sign?
body: <p>How can you get the 1st enum member only using its Type irrespective of whether underlying value is positive or negative?</p>
  
  <p>Lets assume I have an enum like this:</p>
  
  <pre><code>public enum GamePeriod
  {
      Unknown = -100,
      PreGame = 0,
      Q1 = 1,
      Q2 = 2,
      Q3 = 3,
      Q4 = 4,
      OT = 5,
      Completed = 6,
  }
  </code></pre>
  
  <p>How can I make sure to always get Unknown? Irrespective of whether its value is -1, -10, -100, 100, 666 or anything else?</p>