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cannot read property of undefined (reading 'ajax')

I can't access webmethod within javascript. It gives the error in the title. Why might it be caused?
Js :
function funcGoster() {
$.ajax({
type: "POST",
url: "/WebService1.asmx/HelloWorld",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
// document.getElementById('text').innerHTML =
},
error: function (e) {
alert("başarısız" + e);
}
});
}
</script>
WebMethod :
public class WebService1 : System.Web.Services.WebService
{
[WebMethod]
public static string HelloWorld()
{
return "Hello World";
}
}

Ok, what you have looks quite good, but note in the web service page, you have to un-comment the one line.
so, you should have this:
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class WebService1 : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
}
}
Ok, now our code and markup:
<asp:Button ID="Button1" runat="server" Text="Button" Width="153px"
OnClientClick="ajtest();return false;"/>
<br />
</div>
<script>
function ajtest() {
$.ajax({
type: "POST",
url: "/WebService1.asmx/HelloWorld",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
alert(' back from ajax message = ' + msg.d)
},
error: function (xhr, status, error) {
var errorMessage = xhr.status + ': ' + xhr.statusText
alert('Error - ' + errorMessage)
}
});
}
</script>
So, we also assume you have jQuery setup for this page? You need that.
You can call the web method without jQuery.
So, pure JavaScript, you could use this:
// Web method call without jQuery
function ajtest2() {
// ajax call without jquery
var xhr = new XMLHttpRequest()
xhr.open('POST', '/WebService1.asmx/HelloWorld')
xhr.setRequestHeader('Content-Type', 'application/json')
xhr.send('{}');
xhr.onload = function () {
if (xhr.status === 200) {
var userInfo = JSON.parse(xhr.responseText)
alert(' back form ajaxes message = ' + userInfo.d)
}
}
}

how to redirect page of login page to index page in server side c#?

I am new to developing a web application or website. Currently, I am working on the Login page, I want to redirect from Login to Index page. I am using c# on the server-side, I want to transfer after checking the credentials of the user in the DB. I tried Response.Redirect and Server.Transfer but it does not work. It always return this error on the Console of the Chrome Failed to load resource: the server responded with a status of 401 (Unauthorized) and when I click it, this is what inside.
System.InvalidOperationException: Parameter: users not found.
場所 System.Web.Services.Protocols.ValueCollectionParameterReader.Read(NameValueCollection collection)
場所 System.Web.Services.Protocols.UrlParameterReader.Read(HttpRequest request)
場所 System.Web.Services.Protocols.HttpServerProtocol.ReadParameters()
場所 System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()
This is my code on C#.
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public void LogMeIn(string users, string pass) {
try
{
string stmt = "SELECT COUNT(*) FROM tbllogin WHERE userName = #user AND passWord = #pass";
int count = 0;
using (MySqlConnection thisConnection = new MySqlConnection(connectionString()))
{
using (MySqlCommand cmdCount = new MySqlCommand(stmt, thisConnection))
{
cmdCount.Parameters.AddWithValue("#user", users);
cmdCount.Parameters.AddWithValue("#pass", pass);
thisConnection.Open();
count = Convert.ToInt32(cmdCount.ExecuteScalar());
if (count > 0)
{
HttpContext.Current.Response.Redirect("~/default/index.htm", false);
}
}
}
}
catch (ThreadAbortException tEx)
{
Console.WriteLine(tEx.Message);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
And this is on Javascript.
function LoginMeIn(username, password) {
//var xdata = "{'users':'" + username.toString()
// + "','pass':'" + password.toString()
// + "'}";
var xdata = { "users": username.toString(), "pass": password.toString() };
console.log(xdata);
$.ajax({
type: "POST",
url: '../WebService/userLogin.asmx/LogMeIn',
data: JSON.stringify(xdata),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
},
error: function (e) {
// $("#divResult").html("Something Wrong.");
}
});
}
Any Help will be much appreciated. Thank you in advance and Regards.

You can use
return RedirectToAction("ActionName","ControllerName",Action Parameters)
You can see the documentation here

Web Service method name is not valid c# json ajax

I am making a email contact form with a ajax post on a umbraco site, I am halway thru it and was just testing the ajax part and I get a "Web Service method name is not valid" error when it runs.
I have a booking.cs in app_code, then booking.asmx in a webservice folder,
[WebService(Namespace = "http://localhost/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class Booking : System.Web.Services.WebService
{
public string Email { get; set; }
[WebMethod]
[System.Web.Script.Services.ScriptMethod(ResponseFormat = System.Web.Script.Services.ResponseFormat.Json)]
public string SaveIt(string Email)
{
try
{
return "success";
}
catch (Exception er)
{
return "error";
}
}
}
javascript:
$("#email_popup_submit").click(function (e) {
$.ajax({
url: '/webservice/Booking.asmx/SaveIt',
type: 'POST',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
data: { 'Email': 'testemail' },
beforeSend: function () {
},
success: function (data) {
//console.log(data.d);
if (data.d == "success") {
e.preventDefault();
// console.log('SUCCESS!');
} else {
}
},
error: function (jqXhr, textStatus, errorThrown) {
console.log("Error '" + jqXhr.status + "' (textStatus: '" + textStatus + "', errorThrown: '" + errorThrown + "')");
}
});
})

Uncomment following line from your service code to be enabled to call from javascript/ajax
[System.Web.Script.Services.ScriptService]

you could try to change data parameter to this:
data: '{ "Email":"testemail"}'

Why doesn't my ajax call reach my .NET WebMethod?

I can't for the life of me understand why this code isn't working. I need a second set of eyes to review it - TIA:
This function returns success, but the C# method is not called.
JavaScript
$(function() {
($("#survey").on("submit", function() {
var data = serializeForm();
$.ajax({
type: "POST",
url: "Default.aspx/SaveSurveyInfo",
data: data,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(data) {
alert('ok');
},
error: function(data) {
alert('failed');
}
}); //ajax
return false;
}));
function serializeForm() {
var data = new Object;
$("#survey input[type='checkbox']").each(
function(index) {
data[$(this).get(0).id] = $(this).get(0).checked ? 1 : 0;
});
data.otherEnviron = $("#survey input[type='text']").val();
var strData = JSON.stringify(data);
return strData;
}
});
Revised:
$(function () {
($("#survey").on("submit", function() {
var data = serializeForm();
alert(data);
$.ajax({
type: "POST",
url: "Default.aspx/SaveSurveyInfo",
data: data,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (data) {
alert('ok-'+ data);
},
error: function (xml, textStatus, errorThrown) {
alert(xml.status + "||" + xml.responseText);
}
}); //ajax
return false;
}));
Note:
strData="{\"ms\":1,\"google\":0,\"PHP\":0,\"otherEnviron\":\".NET\"}"
C# WebMethod
[WebMethod]
private void SaveSurveyInfo(int ms, int google, int PHP, string otherEnviron)
{
using (SqlConnection scon = new SqlConnection(connectionString))
{
scon.Open();
SqlCommand scmd = scon.CreateCommand();
scmd.CommandType = System.Data.CommandType.StoredProcedure;
scmd.CommandText = "SurveyResults";
scmd.Parameters.AddWithValue("MicrosoftTranslator", ms);
scmd.Parameters.AddWithValue("GoogleTranslator", google);
scmd.Parameters.AddWithValue("PHPOkay", PHP);
scmd.Parameters.AddWithValue("other", otherEnviron);
scmd.ExecuteNonQuery();
}
}
Revised C#
[WebMethod]
public static void SaveSurveyInfo(int ms, int google, int PHP, string otherEnviron)
{
try
{
using (SqlConnection scon = new SqlConnection(ConfigurationManager.ConnectionStrings["C287577_NorthwindConnectionString"].ConnectionString))
{
scon.Open();
SqlCommand scmd = scon.CreateCommand();
scmd.CommandType = System.Data.CommandType.StoredProcedure;
scmd.CommandText = "SurveyResults";
scmd.Parameters.AddWithValue("MicrosoftTranslator", ms);
scmd.Parameters.AddWithValue("GoogleTranslator", google);
scmd.Parameters.AddWithValue("PHPOkay", PHP);
scmd.Parameters.AddWithValue("other", otherEnviron);
scmd.ExecuteNonQuery();
scmd.Dispose();
}
} catch(Exception ex)
{
throw new Exception(ex.Message);
}
}
This is still not working. No error msg is shown, only ok.

because WebMethod must be public and static
Similar question: ASP.NET jQuery error: Unknown Web Method
If you need more security around your ajax call, try moving it to a web service.

public static void SaveSurveyInfo
The method should be static and public in aspx pages to be hit.
In asmx it can be just public.

jQuery.ajax() parsererror

when i try to get JSON from http://api-v3.deezer.com/1.0/search/album/?q=beethoven&index=2&nb_items=2&output=json with:
(jQuery 1.6.2)
$.ajax({
type: "GET",
url: url,
dataType: "jsonp",
success: function (result) {
alert("SUCCESS!!!");
},
error: function (xhr, ajaxOptions, thrownError) {
alert(xhr.statusText);
alert(xhr.responseText);
alert(xhr.status);
alert(thrownError);
}
});
I get: parsererror; 200; undefined; jquery162******************** was not called
but with the JSON from http://search.twitter.com/search.json?q=beethoven&callback=?&count=5 works fine.
Both are valid JSON formats. So what is this error about?
[UPDATE]
#3ngima, i have implemented this in asp.net, it works fine:
$.ajax({
type: "POST",
url: "WebService.asmx/GetTestData",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {
alert(result.d);
}
});
WebService.asmx:
[WebMethod]
public string GetTestData()
{
try
{
var req = System.Net.HttpWebRequest.Create("http://api-v3.deezer.com/1.0/search/album/?q=beethoven&index=2&nb_items=2&output=json");
using (var resp = req.GetResponse())
using (var stream = resp.GetResponseStream())
using (var reader = new System.IO.StreamReader(stream))
return reader.ReadToEnd();
}
catch (Exception) { return null; }
}

It's because you're telling jQuery that you're expecting JSON-P, not JSON, back. But the return is JSON. JSON-P is horribly mis-named, named in a way that causes no end of confusion. It's a convention for conveying data to a function via a script tag. In contrast, JSON is a data format.
Example of JSON:
{"foo": "bar"}
Example of JSON-P:
yourCallback({"foo": "bar"});
JSON-P works because JSON is a subset of JavaScript literal notation. JSON-P is nothing more than a promise that if you tell the service you're calling what function name to call back (usually by putting a callback parameter in the request), the response will be in the form of functionname(data), where data will be "JSON" (or more usually, a JavaScript literal, which may not be the quite the same thing). You're meant to use a JSON-P URL in a script tag's src (which jQuery does for you), to get around the Same Origin Policy which prevents ajax requests from requesting data from origins other than the document they originate in (unless the server supports CORS and your browser does as well).

in case the server does not support the cross domain request you can:
create a server side proxy
do ajax request to your proxy which in turn will get json from the service, and
return the response and then you can manipulate it ...
in php you can do it like this
proxy.php contains the following code
<?php
if(isset($_POST['geturl']) and !empty($_POST['geturl'])) {
$data = file_get_contents($_POST['geturl']);
print $data;
}
?>
and you do the ajax request to you proxy like this
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$("#btn").click(function(){
alert("abt to do ajax");
$.ajax({
url:'proxy.php',
type:"POST",
data:{geturl:'http://api-v3.deezer.com/1.0/search/album/?q=beethoven&index=2&nb_items=2&output=json'},
success:function(data){
alert("success");
alert(data);
}
});
});
});
</script>
tried and tested i get the json response back...

At last i have found the solution. First of all, the webmethods in a webservice or page doesn't work for me, it always returns xml, in local works fine but in a service provider like godaddy it doesn't.
My solution was to create an .ahsx, a handler in .net and wrap the content with the jquery callback function that pass the jsonp, and it works .
[System.Web.Script.Services.ScriptService]
public class HandlerExterno : IHttpHandler
{
string respuesta = string.Empty;
public void ProcessRequest ( HttpContext context )
{
string calls= context.Request.QueryString["callback"].ToString();
respuesta = ObtenerRespuesta();
context.Response.ContentType = "application/json; charset=utf-8";
context.Response.Write( calls +"("+ respuesta +")");
}
public bool IsReusable
{
get
{
return false;
}
}
[System.Web.Services.WebMethod]
private string ObtenerRespuesta ()
{
System.Web.Script.Serialization.JavaScriptSerializer j = new System.Web.Script.Serialization.JavaScriptSerializer();
Employee[] e = new Employee[2];
e[0] = new Employee();
e[0].Name = "Ajay Singh";
e[0].Company = "Birlasoft Ltd.";
e[0].Address = "LosAngeles California";
e[0].Phone = "1204675";
e[0].Country = "US";
e[1] = new Employee();
e[1].Name = "Ajay Singh";
e[1].Company = "Birlasoft Ltd.";
e[1].Address = "D-195 Sector Noida";
e[1].Phone = "1204675";
e[1].Country = "India";
respuesta = j.Serialize(e).ToString();
return respuesta;
}
}//class
public class Employee
{
public string Name
{
get;
set;
}
public string Company
{
get;
set;
}
public string Address
{
get;
set;
}
public string Phone
{
get;
set;
}
public string Country
{
get;
set;
}
}
And here is the call with jquery:
$(document).ready(function () {
$.ajax({
// url: "http://www.wookmark.com/api/json",
url: 'http://www.gjgsoftware.com/handlerexterno.ashx',
dataType: "jsonp",
success: function (data) {
alert(data[0].Name);
},
error: function (data, status, errorThrown) {
$('p').html(status + ">> " + errorThrown);
}
});
});
and works perfectly
Gabriel