title: How to set input type="file" from model in razor
body: <p>I have a multi step form that has multiple input with type of file.
  in some step I call submit button and again I get back to same page without uploading any files because I dont want to upload these files in this step. for example user enters all information and select files that he wants and after that I go to controller and get back to page to show him confirmation page.
  how can I fill input files with model properties? and again he submit the page that file property shouldnt be empty.</p>
  <pre><code>&lt;input asp-for=&quot;CertImageFile&quot; type=&quot;file&quot; accept=&quot;.jpg, .jpeg, .png&quot;&gt;
  </code></pre>
  <p><strong>Model</strong></p>
  <pre><code>public IFormFile CertImageFile { get; set; }
  </code></pre>