title: Is there an alternative to Dictionary/SortedList that allows duplicates?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/5716423/c-sharp-sortable-collection-which-allows-duplicate-keys">C# Sortable collection which allows duplicate keys</a>  </p>
  </blockquote>
  
  
  
  <p>Basically I'd like to make a Dictionary work with duplicate keys without going into custom comparer implementations. There is an idea of:</p>
  
  <pre><code>  Dictionary&lt;key, List&lt;value&gt;&gt;
  </code></pre>
  
  <p>but it still has some overhead. I wish Dictionary had "AllowDuplicates". </p>