c# 4.0 - How to upload image in ASP.NET MVC 4 using ajax or any other technique without postback?

Question

I am developing a website in MVC 4, where user fill some information and save it to upload. all the information except image is being saved on server using Javascript, Json and Ajax, like given below:

$.ajax({
                    url: action,
                    type: "POST",
                    data: JSON.stringify(PostViewModel),
                    dataType: "json",
                    contentType: "application/json; charset=utf-8",
                    beforeSend: function () {            
                    },
                    success: function (data) {
                    try{
                        alert('success');
                    }catch(err){alert(' Error: '+err);}

                    },
                    complete: function () {
                    },
                    error: function (xhr, ajaxOptions, thrownError) {
                        alert("Error occured");
                    }
            });

But Now I need to upload his image also, but I couldn't find any method that can work with this approach or any without post back.

I know putting FileUpload Control in Form tag and on press of submit button i can get image file like as given below:

 HttpPostedFileBase photo = Request.Files["photo"];
        if (photo != null)
        {
            Session["ImgPath"] = "~/Content/PostImages/" + photo.FileName;
            string path = Server.MapPath("~/Content/PostImages/");
            photo.SaveAs(path + photo.FileName);
        }

But for this method I'll have to change my approach of saving content (using Javascript, Json & Ajax) which I can't.

Please help

Thanks.

Answer 1

HTML Code

<input type="file"  id="uploadEditorImage"  />

Javascript Code

$("#uploadEditorImage").change(function () {
    var data = new FormData();
    var files = $("#uploadEditorImage").get(0).files;
    if (files.length > 0) {
        data.append("HelpSectionImages", files[0]);
    }
    $.ajax({
        url: resolveUrl("~/Admin/HelpSection/AddTextEditorImage/"),
        type:"POST",
        processData: false,
        contentType: false,
        data: data,
        success: function (response) {
           //code after success

        },
        error: function (er) {
            alert(er);
        }

    });
});

Code in MVC controller

if (System.Web.HttpContext.Current.Request.Files.AllKeys.Any())
        {
            var pic = System.Web.HttpContext.Current.Request.Files["HelpSectionImages"];
        }