This is my solution.
<form enctype="multipart/form-data"> <div class="form-group"> <label class="control-label col-md-2" for="apta_Description">Description</label> <div class="col-md-10"> <input class="form-control text-box single-line" id="apta_Description" name="apta_Description" type="text" value=""> </div> </div> <input name="file" type="file" /> <input type="button" value="Upload" /> </form> and the js
<script> $(':button').click(function () { var formData = new FormData($('form')[0]); $.ajax({ url: '@Url.Action("Save", "Home")', type: 'POST', success: completeHandler, data: formData, cache: false, contentType: false, processData: false }); }); function completeHandler() { alert(":)"); } </script> Controller
[HttpPost] public ActionResult Save(string apta_Description, HttpPostedFileBase file) { return Json(":)");[...] }