title: MongoDB - Unsupported filter contains in linq. How to use contains and ToLower in linq query?
body: <p>MongoDB.Driver 2.10.2</p>
  
  <pre><code>_query.Where(x =&gt; list.Contains(x.Country.ToLower())).ToList();
  </code></pre>
  
  <blockquote>
    <p>Unsupported filter: Contains(value(System.Collections.Generic.List`1[System.String])).</p>
  </blockquote>
  
  <p>How to use contains and ToLower in linq query?</p>