title: Combine two (or more) FileInfo lists...
body: <p>I have something similar to this:  </p>
  
  <pre><code>var d1 = new DirectoryInfo(Path.Combine(source, @"bills_save." + dt));
  var d2 = new DirectoryInfo(Path.Combine(source, @"reports_save." + dt));
  
  var f1 = d1.GetFiles();
  var f2 = d2.GetFiles();
  </code></pre>
  
  <p>I want to get, and combine, all the filenames into one FileInfo list. Would make my parsing a lot easier. Concat, AddRange, join... nothing seems to work. Most of what I see is for adding 2 lists, arrays.</p>