title: openfiledialog - filter folders
body: <p>I want to do this:</p>
  
  <p>openfiledialog filter doesn't show folders. just show the files. is it possible?</p>
  
  <p>this code at the below, show me the folders and the images files. I want to filter folders too.</p>
  
  <pre><code>file.Filter = "İmage files |*.jpg;*.png;*.gif;*.jpeg*";
  file.FilterIndex = 1;
  </code></pre>