How to upload a file through jQuery?

I am wondering how would I do this with like jQuery ajax. Right now I have a jQuery ui dialog box popup and it has an html input file on it. Now when the user clicks import I want to do an ajax post to the server with jQuery. I am not sure how to pass the file in though to my action view. Right now I have it doing a full post back so I have this ``` <% using (Html.BeginForm("Import", "Controller", FormMethod.Post, new { enctype = "multipart/form-data" })) {%> <br /> <p><input type="file" id="file" name="file" size="23 accept="text/calendar"></p><br /> <p><input type="submit" value="Upload file" /></p> <% } %> ``` Then in my controller ``` public ActionResult Import(HttpPostedFileBase file) ``` So I am not sure how to pass in an HttpPostedFileBase with jQuery and how to set `enctype = "multipart/form-data"` in jQuery. Edit Ok well the jQuery form plugin seems to be the way to go. ``` $('#frm_ImportCalendar').livequery(function() { var options = { dataType: 'json', success: function(response) { alert(response); } }; $(this).ajaxForm(options); }); ``` I was wondering why my json was not working but someone mentioned you can't use it just as is. I am checking out the other link where someone was able to use json. I am not sure though why in Lck used .submit before the ajax submit method. Edit How could I change the file upload json result to return my dictionary array? ``` Dictionary<string, string> result = new Dictionary<string, string>(); result.Add("Msg", "Success!!"); result.Add("Body", calendarBody); // how can I change this? return new FileUploadJsonResult { Data = new { message = string.Format("{0} uploaded successfully.", System.IO.Path.GetFileName(file.FileName)) } }; ```