title: How to create MVC 4 @Html.TextBox type="file"?
body: <p>I need to add the following field at my form</p>
  
  <pre><code>&lt;input type="file" class="input-file" /&gt;
  </code></pre>
  
  <p>I create model and describe this field (the last field)</p>
  
  <pre><code> using System;
   using System.Collections.Generic;
   using System.Linq;
   using System.Web;
  
   namespace CorePartners_Site2.Models
   {
       public class FeedbackForm
       {
      public string Name { get; set; }
      public string Email { get; set; }
      public string Phone { get; set; }
      public string Company { get; set; }
      public string AdditionalInformation { get; set; }
      public HttpPostedFileBase ProjectInformation { get; set; }
       }
   }
  </code></pre>
  
  <p>and create </p>
  
  <pre><code>@Html.TextBox(null, null, new { type="file", @class="input-file" })
  </code></pre>
  
  <p>but it doesnt work, I get some exception.
  What's wrong?</p>