how to pass image path to server side using ajax mvc?

when i click submit button am getting everything including image path data in ajax.but in server side am not getting image path data renaming value am getting..

@using (Html.BeginForm("AddDoctor", "Doctor", FormMethod.Post, new { id = "myForm", enctype = "multipart/form-data"  }))         {             @Html.AntiForgeryToken()             @Html.ValidationSummary(true)                                                                                                                                                                                                                                                                 Doctor Registration                                                                                                   
                                                                                                                                                                                     Doctor Experience                                                                                                   
                                                                                                                                                                                     Doctor Education                                                                                                   
                                                                                                                                                                                     Doctor Clinic Information                                                                                                   
                         
                     
                 
                                                               
                         
                                                                                                                                                                                                                                                                    Tittle                                                                                                  @Html.ValidationMessageFor(model => Model.DoctorRegistration.Tittle, null, new { @style = "color: red" })                                             
                                         
                                                                                                                                       Doctor Name                                                 @Html.TextBoxFor(model => Model.DoctorRegistration.DoctorName, new { @class = "form-control", @id = "txtDoctorName", placeholder = "Enter the Doctor Name" })                                                 @Html.ValidationMessageFor(model => Model.DoctorRegistration.DoctorName, null, new { @style = "color: red" })                                             
                                         
                                                                                                                                       Doctor Code                                                 @Html.TextBoxFor(model => Model.DoctorRegistration.DoctorCode, new { @class = "form-control", @id = "txtDoctorCode", placeholder = "Enter the Doctor Code" })                                             
                                         
                                     
                                     
                                                                                                                                                                            Registration Number                                                 @Html.TextBoxFor(model => Model.DoctorRegistration.RegistrationNo, new { @class = "form-control", @id = "txtRegistrationNo", placeholder = "Doctor Registration Number" })                                             
                                         
                                                                                                                                       Gender                                                 
                                                                                                                                                                                                                        Male                                                                                                                         Female                                                     
                                                 
                         
                                         @Html.ValidationMessageFor(model => Model.DoctorRegistration.Gender, null, new { @style = "color: red" })                                     
                                                                                                                           Date Of Birth                                             @*@Html.TextBoxFor(model => Model.DoctorRegistration.DocDOB, new { @class = "form-control", @id = "txtDocDOB", placeholder = "Enter the Doctor Code" })*@                                                                                                                                                                                                                                                                                                  
                                         
                                         @Html.ValidationMessageFor(model => Model.DoctorRegistration.DocDOB, null, new { @style = "color: red" })                                     
                                 
                                 
                                                                                                                                                            Address Line 1                                             @Html.TextBoxFor(model => Model.DoctorRegistration.DocAddress1, new { @class = "form-control", @id = "txtDocAddress1", placeholder = "Enter the Address Line 1" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.DocAddress1, null, new { @style = "color: red" })                                         
                                     
                                                                                                                           Address Line 2                                             @Html.TextBoxFor(model => Model.DoctorRegistration.DocAddress2, new { @class = "form-control", @id = "txtDocAddress2", placeholder = "Enter the Address Line 2" })                                         
                                     
                                                                                                                           Country                                             @Html.DropDownList("Country", null, "--- Select Country ---", new { @class = "select2-arrow" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.Country, null, new { @style = "color: red" })                                         
                                     
                                 
                                 
                                                                                                                                                            State                                                                                          @Html.ValidationMessageFor(model => Model.DoctorRegistration.State, null, new { @style = "color: red" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.State, null, new { @style = "color: red" })                                         
                                     
                                                                                                                           City                                             @Html.TextBoxFor(model => Model.DoctorRegistration.City, new { @class = "form-control", @id = "txtCity", placeholder = "Enter the City Name" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.City, null, new { @style = "color: red" })                                         
                                     
                                                                                                                           Pincode                                             @Html.TextBoxFor(model => Model.DoctorRegistration.Pincode, new { @class = "form-control", @id = "txtPincode", placeholder = "Enter the Pincode" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.Pincode, null, new { @style = "color: red" })                                         
                                     
                                 
                                 
                                                                                                                                                            Country Code                                             @Html.DropDownList("CountryCode", null, "--- Select Country Code ---", new { @class = "select2-arrow" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.CountryCode, null, new { @style = "color: red" })                                         
                                     
                                                                                                                           Mobile Number                                             @Html.TextBoxFor(model => Model.DoctorRegistration.Mobile, new { @class = "form-control", @id = "txtMobile", placeholder = "Enter the Mobile Number" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.Mobile, null, new { @style = "color: red" })                                         
                                     
                                                                                                                           Phone                                             @Html.TextBoxFor(model => Model.DoctorRegistration.Phone, new { @class = "form-control", @id = "txtPhone", placeholder = "Enter the Phone Number" })                                         
                                     
                                 
                                 
                                                                                                                                                            Email                                             @Html.TextBoxFor(model => Model.DoctorRegistration.Email, new { @class = "form-control", @id = "txtEmail", placeholder = "Enter the Email" })                                             @Html.ValidationMessageFor(model => Model.DoctorRegistration.Email, null, new { @style = "color: red" })                                         
                                     
                                                                                                                           Website                                             @Html.TextBoxFor(model => Model.DoctorRegistration.Website, new { @class = "form-control", @id = "txtWebsite", placeholder = "Enter the Website" })                                         
                                     
                                                                                                                           Aadhaar Card Number                                             @Html.TextBoxFor(model => Model.DoctorRegistration.AadhaarCardNo, new { @class = "form-control", @id = "txtAadhaarCardNo", placeholder = "Enter the AadhaarCard NUmber" })                                         
                                     
                                 
                                 
                                                                                                                                                            Language                                                                                              English,Tamil                                             
                                         
                                     
                                                                                                                           AboutDoctor                                             @Html.TextAreaFor(model => Model.DoctorRegistration.AboutDoctor, new { @class = "form-control maxlength-simple", @id = "txtAboutDoctor", maxlength = "500", placeholder = "Max length 500 chars" })                                         
                                     
                                                                                                                           Status                                                                                      
                                     
                                 
                                 
                                                                                                                                                            Upload Company Logo                                                                                                Choose file                                                                                                                                       
                                     
                                                                                                                                                                            Perview Image                                                                                                    Remove                                             
                                         
                                     
                                 
                                 
                                 
                                                                  @ViewBag.Message

Ajax method:

function GetInfo() { var gender = $("input[name='optionsRadios']:checked").val(); var postedFile = $("#txtUploadImage").val(); var Doctor = { Tittle: $("#txtTittle").val(), DoctorName: $("#txtDoctorName").val(), DoctorCode: $("#txtDoctorCode").val(), RegistrationNo: $("#txtRegistrationNo").val(), Gender: gender, DocDOB: $("#txtDocDOB").val(), DocAddress1: $("#txtDocAddress1").val(), DocAddress2: $("#txtDocAddress2").val(), Country: $("#Country").val(), State: $("#state").val(), City: $("#txtCity").val(), Pincode: $("#txtPincode").val(), CountryCode: $("#CountryCode").val(), Mobile: $("#txtMobile").val(), Phone: $("#txtPhone").val(), Email: $("#txtEmail").val(), Website: $("#txtWebsite").val(), AadhaarCardNo: $("#txtAadhaarCardNo").val(), Language: $("#txtLanguage").val(), AboutDoctor: $("#txtAboutDoctor").val(), Status: $("#Status").val() }; var mainModel = {};             mainModel.DoctorRegistration = Doctor;              $.ajax({                 type: "POST",                 url: "/Doctor/AddDoctor",                 data: JSON.stringify(mainModel, postedFile),                 contentType: "application/json; charset=utf-8",                 dataType: "json",                 success: OnSuccess,                 failure: function (response) {                     alert(response.d); } }); }         function OnSuccess(response) { //alert(response.id); if (response.id > 0) { var linkHref = "tabs-1-tab-1"; } }

Controller:

[HttpPost] public ActionResult AddDoctor(DoctorMainModel mainModel, HttpPostedFileBase postedFile) { try { Country_Bind(); CountryCode_Bind(); if (ModelState.IsValid) { DoctorReg obj = new DoctorReg(); int id = obj.AddDoctorRegistration(mainModel); if (id != 0) { Session["docID"] = id.ToString(); AddDoctorImage(postedFile); ViewBag.Message = "Company added successfully"; return Json(new { id = Session["docID"] }); } } return View(); } catch { return View(); } } private void AddDoctorImage(HttpPostedFileBase postedFile) { int docId = Convert.ToInt32(Session["docID"]); if (postedFile != null) { string path = Server.MapPath("~/Doctor/"); if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } var filename = docId.ToString() + ".png";                 postedFile.SaveAs(path + filename); ViewBag.Message = "File uploaded successfully."; } }

First Image

Second image

All value pass to the controller but postedFile value am not getting

Value pass

null value