C# Switch results to list then to comma separated values
<p>How would I make a switch statement populate a list, or comma delimited string?</p>

<p>For example</p>

<pre><code>switch(test)
{
   case 0:
      "test"
      break;
   case 1:
      "test2"
      break;
   case 2:
      "test3"
      break;
}
</code></pre>

<p>So my program will go into this statement multiple times. So lets say it goes in there twice and has case 2 and case 1. I woulld like a string value containing the following:
string value = "test3, test2"</p>
