title: kendo ui upload, restrict only 1 document
body: <p>Would you be able to advise how you could only allow 1 document to upload in kendo ui upload. If the file have been selected, then we unable to upload the new one. Please find the code below. Thank you</p>
  
  <pre><code>&lt;div class="configuration k-widget k-header"&gt;
      &lt;span class="infoHead"&gt;Information&lt;/span&gt;
      &lt;p&gt;
          The Upload can be used as a drop-in replacement
          for file input elements.
      &lt;/p&gt;
      &lt;p&gt;
          This "synchronous" mode does not require
          special handling on the server.
      &lt;/p&gt;
  &lt;/div&gt;
  &lt;form method="post" action='@Url.Action("Submit")' style="width:45%"&gt;
      &lt;div&gt;
          @(Html.Kendo().Upload()
              .Name("files")
          )
          &lt;p&gt;
              &lt;input type="submit" value="Submit" class="k-button" /&gt;
          &lt;/p&gt;
      &lt;/div&gt;
  &lt;/form&gt;
  </code></pre>