interface concept in C#
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/1035632/what-are-some-advantages-to-using-an-interface-in-c">What are some advantages to using an interface in C#?</a>  </p>
</blockquote>



<p>Why we are using interface in C#. Whats the advantage for using interface.Can you please explain about this concept to understand easily and also simple example for interface ?</p>
