title: How do I encode a file name for download?
body: <p>When the file name is "Algunas MARCAS que nos acompañan" ASP.NET MVC raise an <code>System.FormatException</code> when I try to download that file. But if the file name is "Asistente de Gerencia Comercial" it doesn't. </p>
  
  <p>I guess this is because something related to <code>UTF-8</code> encoding, but I don't know how to encode that string.</p>
  
  <p>If I'm right, how can I encode the string in <code>UTF-8</code> encoding? If I'm not right, what is my problem?</p>