title: One line LINQ to flatten string[] to a string?
body: <p>I came up with the foreach below but I am hoping this can be accomplished in one line.. maybe linq? Any ideas would be appreciated.</p>
  
  <pre><code>foreach (string item in decoder.AllKeys)
  {
      message += String.Format("{0}: {1} ;", item, decoder[item]);
  }
  </code></pre>