title: Check if dictionary contains substring?
body: <p>Say I have two dictionaries with the following key value pairs:</p>
  
  <pre><code>1, "Hello"
  2, "Example"
  </code></pre>
  
  <p>And another dictionary as follows:</p>
  
  <pre><code>1, "HelloWorld"
  2, "Example2"
  </code></pre>
  
  <p>I want to find out if these dictionaries contain the substring "hello" within them.  <br><code>dictionary.ContainsValue("Hello")</code> will work for the first example but not the second one.  How can I check for existence of a substring in all values in a dictionary?</p>