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Passing array from view to controller using Ajax but, on action, array shows as empty

I am passing an array from view to controller using Ajax but, on action, the array shows empty.
This is my code:
View
$("#btn").click(function () {
debugger
arry = [];
$.ajax({
type: "Post",
url: "/Main/CheckBoxes",
data: { Values: arr["48","47","46"] },
success: function () {
alert("array: " + arry.join(', '));
},
error: function () {
alert("error");
}
})
});
Action
public ActionResult array(string[] Values)
{
for (int id = 0; id < Values.Length; id++)
{
string newID = Values[id];
}
return View();
}

jQuery.ajaxSettings.traditional = true;
$("#btn").click(function () {
debugger
arry = [];
$.ajax({
type: "Post",
url: "/Main/CheckBoxes",
data: { Values:["48","47","46"]},//just edit this line
success: function () {
alert("array: " + arry.join(', '));
},
error: function () {
alert("error");
}
})
});

Your code has some issues regarding how you are sending the data! What is your expectation when you execute this expression arr["48","47","46"] ????? That is going to give you undefined and that is what you are trying to send!
There are two ways to fix your code. You can send the array in the request body. For this, you need create a JSON string from the array and send that as the data property while explicitly specifying the request content-type header value as "application/json". You may use the JSON.stringify method to get the JSON string of your js array.
Also, make sure you are making the call to the correct action method. In your question you shared the array action method code, but in your client side script you were trying to call a different action method(`Checkboxes)!
This should work.
var arry = ["48", "47", "46"];
var url = "#Url.Action("array", "Main")"; // Update your real url here
// If your script is inside the razor view, you can us Url.Action (c#) method
$.ajax({
type: "Post",
url: url ,
data: JSON.stringify(arry),
contentType: "application/json",
success: function(r) {
alert("Success");
console.log(r);
},
error: function() {
alert("error");
}
});
Another option is to send a javascript object with Values property (which has the array as the value of it) as the data property value of the $.ajax call. Now the request content-type header will be application/x-www-form-urlencoded; and the array will be sent as FormData in the request.
var arry = ["48", "47", "46"];
$.ajax({
type: "Post",
url: "/Main/array",
data: { Values: arry },
success: function(r) {
console.log(r);
},
error: function() {
alert("error");
}
});

How to refresh a particular division while using MVC

I have tried different ways to refresh a particular division in MVC.
1. Using HTML Action Link
2. Ajax Action Link
3. method
Please help me resolve this issue.
My Code is as follows:
<script src="~/scripts/jquery.unobtrusive-ajax.js"></script>
<script>
function updateAsyncCategoryUpdate() {
var url = '/Home/HomePage';
$.ajax({
url: url,
//data: { value: '1234' }, //if there are any parameters
dataType: "html", //or some other type
success: function () {
window.location.reload(true);
// or something in that area, maybe with the 'data'
},
error: function () {
//some derp
}
});
}
</script>`
#Ajax.ActionLink(item.Name, "HomePage", new { CATEGORy = item.Name }, new AjaxOptions {HttpMethod="GET", OnSuccess = "updateAsyncCategoryUpdate('item.Name')" })

You can append the success function.
This replaces content of div
success: function (data)
{
$('#divSelector').html(data);
}
This appends content of div
success: function (data)
{
$('#divSelector').append(data);
}

Your script function does not have parameter and you send Item.Name to it.(although you dont use this parameter inside the script!)
First, define parameter for updateAsyncCategoryUpdate function.
Secomd,Add a container element(like div) to your page with specific id(resultDiv for example) and replace the success code of your scrip with this:
success: function(result){
var myDiv = $('#resultDiv');
myDiv.empty();
myDiv.prepend(result);
}

Asp.Net Mvc POST method doesn't send string

Ajax doesn't send any strings to the controller.
Here's my function:
$(function () {
$('#btnAnswer').click(function () {
var code = $('#Answer').val();
$.ajax({
url: '#Url.Action("CheckAnswer", "Home")',
type: "POST",
data: code ,
datatype: "text",
success: function (resultFromFunct) {
$("#resultsBox").append(resultFromFunct);
}
});
$('#Answer').val('');
});
});
Here's my controller:
[HttpPost]
public string CheckAnswer(string answer)/
{
game.LogUserAnswer(Request.Cookies["user"].Value, answer);
return String.Format("<strong>{0}</strong>: {1} <br>", Request.Cookies["user"].Value, game.UserGuess(answer));
}
Ajax is correctly get into CheckAnswer method but answer is always null. I've tried other examples from stack, for instance Asp.Net Mvc JQuery ajax input parameters are null but always get null result. Do you have any thoughts of the cause?

Change your request parameters to data: { answer: code } in your request. It probably can not match code to the parameter on your action.
$(function () {
$('#btnAnswer').click(function () {
var code = $('#Answer').val();
$.ajax({
url: '#Url.Action("CheckAnswer", "Home")',
type: "POST",
data: { answer: code },
datatype: "text",
success: function (resultFromFunct) {
$("#resultsBox").append(resultFromFunct);
}
});
$('#Answer').val('');
});
});

JSON TinyMCE return value "\t"

Should I use another variable for "streszczenie"? or what should I do?
In my opinion in TinyMCE body have html but I get only "\t" Pobably I have got problem with JS
this is new problem - this question is related with this link. I added this for other users
this I write in TinyMCE
this I get from TinyMCE textarea "streszczenie"
As you can see there is text ghhfgh but I can`t get this text
Now I have got problem with execute JSON
<script type="text/javascript">
function Save() {
tinyMCE.triggerSave();
var Temat_controll = $('#Temat').val();
var Streszczenie_controll = tinyMCE.get('Streszczenie').getContent();
var PelnyOpis_controll = $('#PelnyOpis').text();
$.ajax({
url: '#Url.Action("DodajTematSave", "StronaGlowna")',
dataType: "json",
data: {
Temat: Temat_controll,
Streszczenie: Streszczenie_controll,
PelnyOpis: PelnyOpis_controll
},
type: "POST",
async: false,
error: function() {
},
success: function(data) {
if (data.Success) {
alert('success');
}
}
});
}
</script>
I get this but all the time JSON is not execute
When I click button tinyMCE.get('Streszczenie').getContent() is empty I check this and I don`t know why because I have got text into textarea
<script type="text/javascript">
function Save() {
var Temat_controll = $('#Temat').val();
var $d = tinyMCE.get('Streszczenie').getContent();
if ($d.length != 0) {
if ($d.val().length != 0) {
var Streszczenie_controll = tinyMCE.get('Streszczenie').getContent();
}
else {
var Streszczenie_controll = 'ewewe';
}
}
var PelnyOpis_controll = $('#PelnyOpis').text();
$.ajax({
url: '#Url.Action("DodajTematSave", "StronaGlowna")',
dataType: "json",
data: {
Temat: Temat_controll,
Streszczenie: Streszczenie_controll,
PelnyOpis: PelnyOpis_controll
},
type: "POST",
async: false,
error: function () {
},
success: function (data) {
if (data.Success) {
alert('success');
}
}
});
}
</script>

You are getting the content in wrong way, not by jQuery's val().
To get the tinymce content, just use tinyMCE object reference:
// Get the HTML contents of the currently active editor
console.debug(tinyMCE.activeEditor.getContent());
// Get the raw contents of the currently active editor
tinyMCE.activeEditor.getContent({format : 'raw'});
// Get content of a specific editor:
tinyMCE.get('content id').getContent()
As mentioned:
http://www.tinymce.com/wiki.php/API3:method.tinymce.Editor.getContent
Hope it heled. Polish man : )

jquery AJAX sent data in key value pair

In my aspx page, i have the js like this :-
<script language="javascript" type="text/javascript">
$("#btnLoad").click(function () {
var dataForAjax = "{'datakey':'hello'}"
$.ajax({
type: "POST",
url: "Ajax__Demo.aspx/SendFile",
data: dataForAjax,
success: function (msg) {
alert(msg); // Problem with this line. It is not showing the value.
}
});
});
</script>
In the same webpage code behind class file ,i have the webmethod defined like this:-
[WebMethod]
public static string SendFile(string key, string data)
{
return data;
}
For some reason, i am able to get the data in the alert used on the html side. alert(msg); is giving me nothing and i am expecting to get the passed value back. In this case it should be 'Hello'.
I am missing something very small here, please help me out here.

Alter these.
The AJAX Call
$(document).ready(function () {
$("#btnLoad").click(function (evt) {
var dataForAjax = "{'datakey':'hello'}";
$.ajax({
contentType: "application/json",
data: dataForAjax,
type: "POST",
url: 'Test1.aspx/SendFile',
success: function (msg) {
var msg = msg.hasOwnProperty("d") ? msg.d : msg;
alert(msg.datakey);
}
});
evt.preventDefault();
});
});
The WebMethod
[WebMethod]
public static object SendFile(string datakey)
{
return new
{
datakey = datakey
};
}
Hope this helps.
Update:
`evt.preventDefault is for preventing postback in case your control was something like input type="submit" or asp:Button
.d is ASP.NET 3.5+ feature to prevent XSS vulnerability. ( link here )
The return type is object for the web method for automatic serialization ( link here )
Also you could omitdataType in $.ajax call but contentType is an absolute necessity ( link here )

This:
var dataForAjax = "{'datakey':'hello'}"
Should be:
var dataForAjax = {'datakey':'hello'}
AJAX does not (by default anyway) send json - it sends FORM INPUT elements! jQuery is nice and will convert javascript objects into that for you.
If you really need to you can send json, but I really doubt you do, it's rare to do that.

When you send data to method you must send apropriate key-value pairs, using object in Javascript.
Examle for you method:
<script language="javascript" type="text/javascript">
$("#btnLoad").click(function () {
var dataForAjax = {'key' :'datakey', 'data' : 'hello'};
$.ajax({
type: "POST",
url: "Ajax__Demo.aspx/SendFile",
data: dataForAjax,
success: function (msg) {
alert(msg); // Problem with this line. It is not showing the value.
}
});
});