title: How to do "like" on dictionary key?
body: <p>How can I do a "like" to find a dictionary key?  I'm currently doing:</p>
  
  <pre><code>mydict.ContainsKey(keyName);
  </code></pre>
  
  <p>But some keyNames have an additional word appended (separated by a space), I'd like to do a "like" or .StartsWith().  The comparisons will look like this:</p>
  
  <pre><code>"key1" == "key1"  //match
  "key1" == "key1 someword" //partial match
  </code></pre>
  
  <p>I need to match in both cases.</p>