title: How to set a combobox size to the maximum width of its content?
body: <p>I have this ComboBox</p>
  
  <pre><code>&lt;ComboBox ItemsSource="{Binding Path=Foo.Bars}"/&gt;
  </code></pre>
  
  <p>Can I set the size of the combobox to the width of its widest item?</p>
  
  <p>For example, if the contents are:</p>
  
  <pre><code>John Doe
  Jane Mary
  Josh
  </code></pre>
  
  <p>The length would be equal to the length of Jane Mary.</p>
  
  <p>Also, in this case the contents are not expected to change after initialization</p>