Develop Reference

Can't send parameter with #ViewData["Param"]

I need help, i can't send parameter from ViewData in javascript to Controller, maybe because in controller using JsonResult, but I haven't found the solution till now, is there any way to fix it ?
this my js :
var urlString2 = "#Url.Action("GetAttributeLabel", "MasterDataTemp")?modifierId=#ViewData["ModifierId"]";
$.ajax({
url: urlString2,
type: "GET",
dataType: "json",
contentType: 'application/json; charset=utf-8',
async: true,
processData: false,
cache: false,
success: function (data) {
$.each(data, function (i, item) {
dataAttributeLabel.push(item.AttributeName);
});
},
error: function (xhr) {
alert('error');
}
});
this is my controller :
public JsonResult GetAttributeLabel(Guid modifierId)
{
...........
}
The parameter always send empty guid, please help..

Please try like below
#{
string guid = ViewData["ModifierId"].ToString();
}
var urlString2 = "MasterDataTemp/GetAttributeLabel?modifierId="+"#guid";
$.ajax({
url: urlString2,
type: "GET",
dataType: "json",
success: function (data) {
$.each(data, function (i, item) {
dataAttributeLabel.push(item.AttributeName);
});
},
error: function (xhr) {
alert('error');
}
});
And at controller
public JsonResult GetAttributeLabel(string modifierId)
{
...........
}

Firstly, you have to avoid sending JSON data with jQuery Ajax GET request, if you do want to send JSON data, try with a POST request.
Secondly, you could generate the url in #Section like this:
#{        
string val = ViewData["key"] != null ? ViewData["key"].ToString()
: "defaultval"; 
   
var routedic = new Dictionary<string, string>()
    {
{ "key", val }
    }; 
   
var url = Url.Action("Test", "Home", routedic);
}
And then send the request:
<script>    
var urlstr="#(url)";
// check the uri in console  
  console.log(urlstr);   
 $.ajax({       
  url:urlstr,        
type:"GET"    
});
</script>
It works well now:

I keep getting 415 error while post json data to asp.net controller

I am trying to develop simple jouneral voucher form.
var Things=[];
function addNewEntry() {
var thing = {
//Id: parseInt($('#Id').val()),
AcNumber: $('#AcNumber').val(),
TranAmount: parseInt($('#TranAmount').val()),
TranType: $('#TranType').val(),
Tdate: $('#Tdate').val(),
};
things.push(thing);
return things;
}
function clickPostBtn() {
$('#post').click(function (ev) {
console.log('post botton work started');
ev.preventDefault();
addNewEntry();
//debit credit validation
var myJsonString = JSON.stringify(things);
$.ajax({
contentType: 'application/Json; charset=UTF-8',
dataType: 'json',
type: 'POST',
url: '/Transaction/DoubleEntry',
data: myJsonString,
success: function () {
alert('success');
},
failure: function (response) {
$('#result').html(response);
}
});
document.getElementById('myform').submit();
my controller looks like below
public IActionResult doubleentry([FromBody] IEnumerable<TransactionTbl> trans)
{
//do something with incoming data
return RedirectToAction("dummyview", "Transaction");
}
whenever i click post button, data do get my controller but throw 415 after that,
i have tried with in ajax
application/x-www.formencoded
multipart/formdata
with and without binding attribute in controller.

How to pass string array to controller using ajax?

// something defined deleteArr and pass values to it
var postData = { deleteArr: deleteArr };
if(deleteArr.length > 0)
{
$.ajax({
url: "#Url.Action("Delete", "ASZ01")",
type: "POST",
data: postData,
contentType: "application/json; charset=utf-8",
success: function (response) {
alert("success.");
},
error: function (response) {
alert(deleteArr[0]);
}
});
deleteArr.length = 0;
}
The above code is javascript.
Until $.ajax begin I can confirm that values in array is correct in immediate window,but when it comes to error: I got "undefined".
And the following is my function in controller
public void Delete(List<string> deleteArr)
{
service.Delete(deleteArr);
}
The second question is that I set breakpoint on that function but it can't stop.
I think maybe my ajax form is wrong?

Stringify to JSON, add the dataType: 'json' and then pass and also correct your ""
var postData = JSON.stringify({ deleteArr: deleteArr });
if(deleteArr.length > 0)
{
$.ajax({
url: #Url.Action("Delete", "ASZ01"),
type: "POST",
data: postData,
dataType: 'json'
contentType: "application/json; charset=utf-8",
success: function (response) {
alert("success.");
},
error: function (response) {
alert(deleteArr[0]);
}
});
deleteArr.length = 0;
}

Small change to your postData
var postData = { deleteArr: JSON.stringify(deleteArr) };
Idea is to convert your array data into string format ie:JSON and posting to the server, The default Model binder of MVC framework will handle the part to convert them into List<string> for you

Jquery Ajax and MVC5 httpPost no value received

I try to send values from my view to my controller.
The method in my controller is called but the value(s) still remain NULL.
Here is the Javascript part:
GUIRequests.prototype.SetNewItemDeliveryValues = function () {
var modelNumberID = this.GetValue('#ModelNumberID');
this.Request.GetPreOrderIDForModelNumberID(modelNumberID); //InventValueRequest
this.Request.GetShortfallAndOverdeliveryInNewItemDelivery(modelNumberID);
}
InventValueRequest.prototype.GetPreOrderIDForModelNumberID = function (_modelNumberID) {
this.CallAjax("/NewItemDelivery/GetPreOrderIDForModelNumberID", _modelNumberID, CallbackMethods.SetPreOrderID);
}
//Private
InventValueRequest.prototype.CallAjax = function (_url, _data, _successFunctionPointer) {
$.ajax({
type: 'POST',
url: _url,
contentType: 'application/json',
data: JSON.stringify(_data),
success: _successFunctionPointer,
error: InventValueRequest.HandleError
});
}
Asp.Net MVC5 (C#) part
[HttpPost]
public ActionResult GetPreOrderIDForModelNumberID(string _modelnumberID)
{
String preOrderID = "";
if (_modelnumberID == null)
{
preOrderID = "No value received";
}
else
{
//Do something
}
return Json(preOrderID);
}
What could be the problem with my code ? why don't I receive any values in my C# part ? It seems that the values get send correctly, at least the payload contains the values I would expect.

_data should have the property _modelnumberID like following.
_data = {'_modelnumberID': '1'}

try below code :
$.ajax({
type: 'POST',
dataType: 'text',
url: _url,
contentType: 'application/json',
data: "_modelnumberID=" + _data,
success: _successFunctionPointer,
error: InventValueRequest.HandleError
});

The Ideal solution would be to use a view model.
public class Create
{
public string _modelnumberID{get;set;}
}
And your HttpPost action would be accepting an object of this
[HttpPost]
public ActionResult View(Create model)
{
// do something and return something
}
and ajax will be
$('.submit').click(function () {
var myData = {
_modelnumberID: _data
}
$.ajax({
url: '/Controller/Action',
type: 'POST',
data: myData,
processData: false
}).done(function () {
}).fail(function () {
});
});

$.ajax({
type: 'POST',
url: _url+"?_modelnumberID="+ _data,
success: _successFunctionPointer,
error: InventValueRequest.HandleError
});
Try this.

How to pass a list of id's in a AJAX request to the Server in MVC

In a AJAX request to the server in MVC, how can I pass a list of id's to the controller's action function?
I accept with or without use of Html helpers.
I know MVC's model binder has no problem when it comes to simple types like int, string and bool.
Is it something like I have to use and array instead in the action?
I don't care if I have to use an array or List and even if the strings I int or strings I can always convert them. I just need them on the server.
My List ids gives null at the moment.
Javascript:
var ids= [1,4,5];
// ajax request with ids..
MVC Action:
public ActionResult ShowComputerPackageBuffer(List<int> ids) // ids are null
{
// build model ect..
return PartialView(model);
}
EDIT: Added my AJAX request
$(document).ready(function () {
$('#spanComputerPackagesBuffer').on('click', function () {
var ids = $('#divComputerPackagesBuffer').data('buffer');
console.log('bufferIds: ' + bufferIds);
var data = {
ids: ids
};
var url = getUrlShowComputerPackageBuffer();
loadTable(url, "result", data);
});
});
// AJAX's
function loadTable(url, updateTargetId, data) {
var promise = $.ajax({
url: url,
dataType: "html",
data: data
})
.done(function (result) {
$('#' + updateTargetId).html(result);
})
.fail(function (jqXhr, textStatus, errorThrown) {
var errMsg = textStatus.toUpperCase() + ": " + errorThrown + '. Could not load HTML.';
alert(errMsg);
});
};
// URL's
function getUrlShowComputerPackageBuffer() {
return '#Url.Action("ShowComputerPackageBuffer", "Buffer")';
};
SOLUTIONS: // Thanks to #aherrick comment. I missed the good old "traditional"
$.ajax({
type: "POST",
url: '#Url.Action("ShowComputerPackageBuffer", "Buffer")',
dataType: "json",
traditional: true,
data: {
bufferIds: bufferIds
}
});

Use the traditional parameter and set it to true.
$.ajax({
type: "POST",
url: "/URL",
dataType: "json",
traditional: true,
data: {}
});

Try this one (I've checked it):
$(function () {
var ids = [1, 4, 5];
$.ajax({
type: 'POST',
contentType: 'application/json; charset=utf-8',
url: '#Url.Action("YourAction", "YourController")',
data: JSON.stringify( { ids: ids })
}).done(function () {
});
});
You have to make sure your contentType is application/json and your data is stringified.

public ActionResult SaveSomething(int[] requestData)
//or
public ActionResult SaveSomething(IEnumerable<int> requestData)
Using Action Result you cannot receive JSON object:
Using Controler:
[HttpPost]
[Route( "api/Controller/SaveSomething" )]
public object SaveTimeSheet( int[] requestData )
{
try
{
doSomethingWith( requestData );
return new
{
status = "Ok",
message = "Updated!"
};
}
catch( Exception ex )
{
return new
{
status = "Error",
message = ex.Message
};
}
}
java script:
var ids = [1,4,5];
var baseUrl: 'localhost/yourwebsite'
$.ajax({
url: baseUrl + '/api/Controller/SaveSomething',
type: 'POST',
data: JSON.stringify(ids),
dataType: 'json',
contentType: 'application/json',
error: function (xhr) {
alert('Error: ' + xhr.statusText);
},
success: function (result) {
if (result != undefined) {
window.location.href = window.location.href;
}
},
async: false,
});