title: Interview Question in C#
body: <p>A Technical Lead asked me the following:<br>
  He created a class, declared an object and initialized it. But in some circumstance we may get "null reference" exception.<br>
  He commented that there are 1000 possible reasons for such exception and asked me to guess a single reason.<br>
  I am unable to figure it out. What is (are) the reason(s) ,we may get such an exception?</p>