title: Multiselect dropdown menu plugin, show n elements and then scroll down to see the rest of the elements
body: <p>Im developing a school project using asp.net and c# and i need to make my multiselect dropdown menu to show a certain numner of elements and then have to scroll down to see the rest of the elements.
  How can i do that?</p>
  <p>Thats my select code:</p>
  <pre><code>&lt;select class=&quot;listbox&quot; asp-for=&quot;ap&quot;  multiple&quot; &gt;
      @foreach(var i in Model.Aps)
      {
          &lt;option value=@i.ap_id&gt; @i.ap_name &lt;/option&gt;
      }
  &lt;/select&gt;
  
  &lt;script type=&quot;text/javascript&quot;&gt;
          $(function () {
              $(&quot;.listbox&quot;).multiselect({
                  includeSelectAllOption: true
                                  
              });
          });
  &lt;/script&gt;
  
  
  </code></pre>