title: Dictionary with duplicate Key
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/551901/is-there-an-alternative-to-dictionary-sortedlist-that-allows-duplicates">Is there an alternative to Dictionary/SortedList that allows duplicates?</a>  </p>
  </blockquote>
  
  
  
  <p>I am looking for a Dictionary sort of class which can have duplicate Keys.</p>
  
  <p>I search about it, and found LookUp class can use to store duplicate keys, but It has no default constructor, So we can't initialize it without any other object to LookUp.</p>
  
  <p>But I have no any such object initially from which I can initialize a LookUp object. </p>
  
  <p>So, My question is, Is there any class in .Net framework 3.5, which behave like Dictionary but allow me to have duplicate keys like LookUp?</p>