title: Best way to convert all strings in List<String> to a single comma separated string
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/5851291/most-efficent-way-of-joining-strings">Most efficent way of joining strings</a>  </p>
  </blockquote>
  
  
  
  <p>I have a List.  What would be the best possible way to create a single sting having all the strings in  List but separated by ','.</p>
  
  <p>Thanks in advance</p>