enctype= multipart/form-data

  
    <form action="/action_page_binary.asp"
 method="post" enctype="multipart/form-data">

  <label for="fname">First name:</label>
  <input type="text" id="fname" 
    name="fname"><br><br>
  <label for="lname">Last name:</label>
  
    <input type="text" id="lname" name="lname"><br><br>
  <input 
    type="submit" value="Submit">

 </form>
  
 

enctype="multipart/form-data"