title: VB.net C# number generator
body: <p>I am trying to make a generator that has 4 constant numbers like this:</p>
  
  <pre><code>5395-5958-2009-3888 543:8933
  5395-5958-2009-3888 456:3834
  5395-5958-2009-3888 323:3874
  </code></pre>
  
  <p>Basically think of a gift card, the pin changes. 
  I have no idea where to start but it's for my college class. </p>
  
  <p>Ive tried</p>
  
  <pre><code>Random rnd = new Random();
  
  int x = rnd.Next(0, 9);
  </code></pre>
  
  <p>but then the 4 constant numbers wont stay the same
  <a href="https://i.stack.imgur.com/wAmys.png" rel="nofollow noreferrer">1</a></p>