title: I have this error and I can't fix it "System.NullReferenceException"
body: <p><a href="https://i.stack.imgur.com/aptEe.png" rel="nofollow noreferrer">this is the error</a></p>
  
  <p>And this is the dropdown menu I used </p>
  
  <pre><code> &lt;select id="IDmoto" name="IDmoto" class="combobox"&gt;
       &lt;option&gt;@siteResource1.motorisation&lt;/option&gt;
   &lt;/select&gt;
  </code></pre>