title: Material-UI File Upload with Button
body: <p>I'm trying to make a file upload with button clicked however there are some problems.</p>
  <pre class="lang-js prettyprint-override"><code>                  &lt;label&gt;
                          &lt;input
                          style={{ display: 'none' }}
                          type=&quot;file&quot;
                          /&gt;     
                          &lt;Button variant=&quot;contained&quot; color=&quot;default&quot;&gt;Upload&lt;/Button&gt;
                      &lt;/label&gt;
  </code></pre>
  <p>Here is my code but file upload doesn't work when clicked on the button, so input is not detected. How can I fix that?</p>
  <p>I'm using React and Material-UI.</p>