title: "System.Byte[]" is being returned instead of the actual data
body: <p>This code is intended to calculate and print the MD5 hash of a file on my desktop. However, on compilation all that is written to the console window is "System.Byte[]" Putting a ToString() didn't resolve the issue either.</p>
  
  <pre><code>MD5 a = MD5.Create();
  Console.Write(a.ComputeHash(File.OpenRead(@"C:\Users\TTDDWW\Desktop\putty.exe")));
  Console.ReadKey();
  </code></pre>