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application/json content type store location

the result of content type : "application/x-www-form-urlencoded" stored in Request.Form in Asp MVC.
but for "application/json" i cant find the store location
here is the code that i use:
ajax part
// reading form data
var form = $("form")[0];
var formData = new FormData(form);
var object = {};
formData.forEach(function(value, key){
object[key] = value;
});
var data = JSON.stringify(object);
// ajax part
// POST application/json; charset=utf-8
$.ajax({
type: "POST",
url: "#Url.Action("FormSubmit","Home")",
data: data,
dataType: "json",
async: true,
contentType: "application/json",
processData: true,
success: function(result) { },
error: function(result) { }
});
Controller Part
[HttpPost]
public ActionResult FormSubmit(string input1, string input2)
{
var httpContext= HttpContext;
var response = Response;
var request = Request;
throw new NotImplementedException();
}

You can use controller like this:
[HttpPost]
public ActionResult SomeAction(string data)
{
List<YOUR_MODEL_CLASS> payloadObj = Newtonsoft.Json.JsonConvert.DeserializeObject<List<YOUR_MODEL_CLASS>>(data)(modelData);
// process your data
}

Found the answer
i just need to read post Payload
here is the code
[HttpPost]
public ActionResult FormSubmit()
{
Request.InputStream.Position = 0;
var reqMemStream = new MemoryStream(HttpContext.Request.BinaryRead(HttpContext.Request.ContentLength));
string reqString = Encoding.ASCII.GetString(reqMemStream.ToArray());
throw new NotImplementedException();
}

Saving changes to the DB MVC

I have a problem when I try to save some data to the database. I can see the ID and Date returning me appropriate values in the JS function... However, the parameter for the Process function inside the controller class remains null. I don't know why is that happening. There is a linq query that is also included in the Hello Model, but I didn't include it because there is no need for it.
Model:
public class Hello
{
List<string> Ids { get; set; }
List<string> Dates { get; set; }
}
Controller:
[HttpPost]
public ActionResult Process(string ids, string dates)
{
Hello model = new Hello();
if (ModelState.IsValid)
{
using (db = new DB())
{
rp = new RequestProcess();
//var c = rp.getHello(model, dates);
var c = rp.getStuff();
if (c != null)
{
foreach (var i in c)
{
if (i != null)
{
ids = i.ID;
dates = i.Date.ToString();
}
db.SaveChanges();
}
}
}
ViewBag.Message = "Success";
return View(model);
}
else
{
ViewBag.Message = "Failed";
return View(model);
}
}
View:
<td><input class="id" type="checkbox" id=#item.ID /></td>
<td>#Html.DisplayFor(x => #item.ID)</td>
<td><input class="date" id=date#item.ID type="text" value='#item.Date'/></td>
$(document).ready(function () {
var ids = "";
var dates = "";
$("#btnSubmit").bind("click", function () {
createUpdateArrays();
var url = "/Sample/Process";
$.ajax({
type: "POST",
url: url,
data: { ids: ids, dates: dates },
contentType: 'application/json; charset=utf-8',
success: function (success) {
if (success === true) {
alert("HERE WE ARE");
}
else {
alert("eror");
}
}
});
ids = "";
dates = "";
});
function createUpdateArrays() {
var i = 0;
$('input.remedy-id:checkbox').each(function () {
if ($(this).is(':checked')) {
var rid = $(this).attr("id");
$('.planned-date').each(function () {
var did = $(this).attr("id");
if (did === rid) {
var date = $(this).val();
ids += rid + ",";
dates += date + ",";
}
});
};
});
};
Any help would be appreciated!

I think you need contentType: 'application/json' in your $.ajax({});
$.ajax({
type: "POST",
url: url,
data: JSON.stringify(list),
contentType: 'application/json'
});
Also, try adding [FromBody]Hello model in your controller action.

There are several issues in your code:
1) You're passing JSON string containing viewmodel properties, it is necessary to set contentType: 'application/json; charset=utf-8' option in AJAX callback to ensure model binder recognize it as viewmodel parameter.
2) return View() is not applicable for AJAX response, use return PartialView() instead and put html() to render response in target element.
Therefore, you should use AJAX setup as provided below:
$.ajax({
type: "POST",
url: url,
data: JSON.stringify(list),
contentType: 'application/json; charset=utf-8',
success: function (result) {
$('#targetElement').html(result);
},
error: function (xhr, status, err) {
// error handling
}
});
Controller Action
[HttpPost]
public ActionResult Process(Hello model)
{
if (ModelState.IsValid)
{
using (db = new DB())
{
// save data
}
ViewBag.Message = "Success";
return PartialView("_PartialViewName", model);
}
else
{
ViewBag.Message = "Failed";
return PartialView("_PartialViewName", model);
}
}
Remember that AJAX callback intended to update certain HTML element without reloading entire view page. If you want to reload the page with submitted results, use normal form submit instead (with Html.BeginForm()).

Passing A Single Objects Into An MVC Controller Method Using jQuery Ajax

I'm trying to post a single object data to an MVC Controler using JQuery, Below are my codes.
//declare of type Object of GroupData
var GroupData = {};
//pass each data into the object
GroupData.groupName = $('#groupName').val();
GroupData.narration = $('#narration').val();
GroupData.investmentCode = $('#investmentCode').val();
GroupData.isNew = isNewItem;
//send to server
$.ajax({
url: "/Admin/SaveContributionInvestGroup",
type: "POST",
contentType: "application/json;charset=utf-8",
dataType: "json",
data: JSON.stringify({ GroupData: JSON.stringify(GroupData) }),
success: function (res) {
alertSuccess("Success", res.Message);
//hide modal
$('#product-options').modal('hide');
hide_waiting();
},
error: function (res) {
alertError("Error", res.Message);
}
});
Below is my controller.
[HttpPost]
public JsonResult SaveContributionInvestGroup(ContributionInvestmentGroup GroupData)
{
ClsResponse response = new ClsResponse();
ClsContributionInvestmentGroup clsClsContributionInvestmentGroup = new ClsContributionInvestmentGroup();
var userID = (int)Session["userID"];
var sessionID = (Session["sessionID"]).ToString();
if (contributionGroupData != null)
{
//get the data from the cient that was passed
ContributionInvestmentGroup objData = new ContributionInvestmentGroup()
{
contributionInvestmentGroupID = 0,
groupName = GroupData.groupName,
narration = GroupData.narration,
investmentCode = GroupData.investmentCode,
isNew = GroupData.isNew
};
response = clsClsContributionInvestmentGroup.initiateNewContributionInvestmentGroup(sessionID, objData);
}
else
{
response.IsException = true;
response.IsSucess = false;
response.Message = "A system exception occurred kindly contact your Administrator.";
}
return Json(new
{
response.IsSucess,
response.Message
});
}
The issue is, the data is not been posted to the controller, the controller receives a null object.
Kindly assist, would really appreciate your effort, thanks.

Try Like this:
//send to server
$.ajax({
type: "POST",
url: "/Admin/SaveContributionInvestGroup",
dataType: "json",
data: GroupData,
success: function (res) {
alertSuccess("Success", res.Message);
//hide modal
$('#product-options').modal('hide');
hide_waiting();
},
error: function (res) {
alertError("Error", res.Message);
}
});

in your controller your dont have custom binding to bind JSON to your model thats why you get null in you parameter.
instead just post it as query, try simply changes your ajax option like so:
{
...
contentType: "application/x-www-form-urlencoded", //default:
...,
data: $.param(GroupData),
...
}
and perhaps property names are case sensitive so you will need to change your javascript model's name

Access file using MVC 6 .NET Core with ajax

I am calling this function to send a file via post:
function AddFileHandler() {
return $.ajax({
processData: false,
contentType: false,
type: "POST",
url: '#Url.Action("AddFile", "SomeController")',
data: getFile()
})
}
In my controller, there is this method which produces an error on the first line:
[HttpPost]
public string AddFile()
{
var attachedFile = Request.Form.Files["CsvDoc"]; // there is an error of wrong contentType
return "";
}
My getFile method optains data like this:
function getFile() {
var input = document.getElementById("csvFile");
if (!input || !input.files || !input.files[0]) {
return ";";
}
console.log(input.files[0]); //inputs my file correctly
var data = new FormData();
data.append("CsvDoc", input.files[0]);
}
What exactly am I doing wrong? Does it matter what is in the html?

You're forgetting to return anything from getFile()
simply add
return data;

JSON Object always return undefined with AJAX

The JSON Object always return undefined in spite of the object contains data, i check it by using breakpoints in debugging
This is Action method in Controller:
public JsonResult GetMoreComments(int CommsCount, int ArticleID)
{
List<ComViewModel> comms = articleService.GetMoreComments(ArticleID, CommsCount);
return Json( comms );
}
and I also replaced the code in Action method to simple code like that but not work too:
public JsonResult GetMoreComments(int CommsCount, int ArticleID)
{
ComViewModel com = new ComViewModel
{
CommentContent = "cooooooooooontent",
CommentID = 99,
SpamCount = 22
};
return Json( com );
}
This is jQuery code for AJAX:
function GetMoreComments() {
$.ajax({
type: 'GET',
data: { CommsCount: #Model.Comments.Count, ArticleID: #Model.ArticleID },
url: '#Url.Action("GetMoreComments", "Comment")',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {
var JsonParseData = JSON.parse(result);
alert(JsonParseData[0].CommentID)
alert(result[0].CommentID);
alert(result[0]["CommentID"]);
}
});
}

Usually you would have to parse your data if you need to alert it the way you have it. alert(result) should show data. If you need to access array of objects you must parse it first. Here is my example....
jQuery.post(ajaxurl, data, function(response) {
alert('Got this from the server: ' + response);
//PARSE data if you need to access objects
var resultstring = response.replace(',]',']');
var JsonParseData = JSON.parse(resultstring);
alert(JsonParseData[0].address)
});
That is wordpress ajax but its the same concept