title: Difference between ContainsKey and ContainsValue in Dictionary?
body: <p>how does containsKey differ from containsValue ?</p>
  
  <pre><code>public Dictionary&lt;string, string&gt; dictionary = new Dictionary&lt;string, string&gt;();
  
  
  if(dictionary.ContainsValue("123"))
  {
  
  }
  if(dictionary.ContainsKey("123"))
  {
  
  }
  </code></pre>