title: What is inner Exception
body: <p>I have read the MSDN but, I could not understand this concept.</p>
  
  <p>Correct me if I am wrong,</p>
  
  <blockquote>
    <p>A innerexception will be used in hand with current exception. </p>
  </blockquote>
  
  <p>Inner exception will occur first and then the current exception will occur (if there is an exception) that is the reason why <code>InnerException</code> is checked against <code>null</code>. In order to  retain inner exception we have to pass it as a parameter.</p>
  
  <p>Am I right with this?</p>