I have a asmx webservice which has a webmethod that I'm calling it via jquery ajax and it returns a string, I want to read and edit cookies from this method, I know that I can read the cookie like this:
HttpContext.Current.Request.Cookie["cookie_name"];
but when I'm trying to change the value of this cookie, this doesn't work:
HttpContext.Current.Response.Cookie["cookie_name"].Value = "some_value";
so let's say this is my function:
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
[WebMethod(EnableSession = true)]
public string myMethod()
{
//...some actions
if(HttpContext.Current.Response.Cookie["cookie_name"] != null)
{
HttpContext.Current.Response.Cookie["cookie_name"].Value = "some_value";
}
return "";
}
and here is my ajax call
$.ajax({
type: "POST",
url: "/route-to/myMethod",
data: JSON.stringify({ }),
contentType: "application/json",
charset: "utf-8",
dataType: "json",
async: true,
cache: false,
success: function (msg) {
}
});
What's exactly is wrong in this code?
Related
I am trying to call a webmethod from AJAX which is redirecting to a url like this:
HttpContext.Current.Response.Redirect(StoreCode.ToLower() + "/App/home.html?EventClick=True", false);
AJAX call:
function TokenPost() {
var token = $('#hdnToken').val();
$.ajax({
url: 'http://localhost/QDC/WebServices.asmx/ChkToken',
type: 'POST',
data: "{data:'" + token + "'}",
contentType: 'application/json; charset=UTF-8',
datatype: 'JSON',
success: function(response) {
},
error: function(response) {
alert(response.d);
}
});
}
But my AJAX call is not redirecting to that url.Thanks in advance.
I think it' s not possible in HttpPost Methods. But you can return link in your HttpPost method from server. And redirect with Javascript Code if ajax returns success.
$.ajax({
url: 'http://localhost/QDC/WebServices.asmx/ChkToken',
type: 'POST',
data: "{data:'" + token + "'}",
contentType: 'application/json; charset=UTF-8',
datatype: 'JSON',
success: function (link) {
window.location.href = link;
},
error: function (link) {
alert(response.d);
}
});
In Server Method (I am using this in ASP.NET MVC):
string link = "https://...Your Link";
return Json(link, JsonRequestBehavior.AllowGet);
If you are using WebMethod, I think you can return just string, too.
[System.Web.Services.WebMethod]
public static string ChkToken(string data)
{
string link = "...";
// Do things
return link;
}
This time ajax return can be like this,
success: function (link) {
window.location.href = link.d;
},
I am trying to pass a json object to my .net webmethod.
Here is my C#:
[WebMethod]
public static string Guncelle(string personel)
{
return "It came.";
}
And my jquery ajax:
var saveData = {};
saveData.Isim = isim;
saveData.Soyad = soyisim;
saveData.Firma = firma;
.
.
.
var result = JSON.stringify({ personel: saveData });
$.ajax({
type: "POST",
url: "Personeller.aspx/Guncelle",
data: result,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
alert(msg.d);
},
error: function (msg) {
alert(msg.d);
}
})
When I run code, it returns 'undefined' with alert. What is the correct way of passing json object to C# Webmethod ? I tried other examples for passing an object but none of them worked for me.
try this: data: "{personel:'" + saveData+ "'}"
I have been able to call WCF methods with .ajax. How do I call a method that returns a value? I need to call this method to see if data is ready and if not wait one second. The WCF method is:
[OperationContract]
[WebGet]
public bool IsDataReady(string requestGUID)
{
if (Global.publicDataDictionary.Keys.Contains(requestGUID))
return true;
else return false;
}
My JavaScript so far is:
$(document).ready(function() {
var input = {requestGUID:"<%=guid %>"};
console.log(input);
$.ajax({
url: "http://www.blah.com/services/TestsService.svc/IsDataReady",
type: "GET",
contentType: "application/json; charset=utf-8",
data: input,
dataType: "json",
success: function(data) {
}
});
EDIT2: I broke out the 2nd ajax call into a method but my logging is showing that the call to 2nd web service never passes a requestGUID. Can't i use the same input variable?
var guid = "<%= this.guid%>";
// var input = '{"SbiId":"' + guid + '"}';
// var input = {requestGUID:"ca222cf7-be5e-431a-ab93-9a31e8ae2f4a"};
function callUpdateGrid(input) {
console.log(input);
$.ajax({
url: "http://www.blah.com/services/TestsService.svc/GetContactsDataAndCountbyGUID",
type: "GET",
contentType: "application/json; charset=utf-8",
data: input,
dataType: "json",
success: function (data) {
var mtv = $find("<%= RadGrid1.ClientID %>").get_masterTableView();
console.log(data);
mtv.set_dataSource(data.d.Data);
mtv.dataBind();
}
});
}
function CallIsDataReady(input) {
$.ajax({
url: "http://www.blah.com/services/TestsService.svc/IsDataReady",
type: "GET",
contentType: "application/json; charset=utf-8",
data: input,
dataType: "json",
success: function (data) {
if (!data) {
setTimeout(function (inputInner) { CallIsDataReady(inputInner); }, 1000);
}
else {
//Continue as data is ready
callUpdateGrid(input);
}
}
});
}
$(document).ready(function () {
var input = { requestGUID: "<%=guid %>" };
CallIsDataReady(input);
});
EDIT2: I broke out the 2nd ajax call into a method but my logging is showing that the call to 2nd web service is never getting called:
url: "http://www.blah.com/services/TestsService.svc/GetContactsDataAndCountbyGUID",
else {
//Continue as data is ready
callUpdateGrid(input);
}
The return value will be contained in the data parameter passed to the success callback setup in your ajax call.
You will need to check the value here, then if false, setup a timeout, which on expiry will attempt the ajax call again.
It would be best IMO to wrap up the Ajax call inside a function, that you can call in a recursive fashion when the timeout has expired. e.g.
function CallIsDataReady(input){
$.ajax({
url: "http://www.blah.com/services/TestsService.svc/IsDataReady",
type: "GET",
contentType: "application/json; charset=utf-8",
data: input,
dataType: "json",
success: function(data) {
if (!data){
setTimeout(function(){CallIsDataReady(input);}, 1000);
}
else{
//Continue as data is ready
}
}
});
}
$(document).ready(function() {
var input = {requestGUID:"<%=guid %>"};
console.log(input);
CallIsDataReady(input);
});
When you view source on this page is:
var input = {requestGUID:"<%=guid %>"};
showing correctly in the javascript? If you put a breakpoint in your IsDataReady method, do you see if requestGUID has a value? Is your service on the same domain as the page calling it?
EDIT:
In your service change: [WebGet]
to:
[WebGet(
RequestFormat=WebMessageFormat.Json,
ResponseFormat=WebMessageFormat.Json]
Read up on RESTful web services:
http://www.codeproject.com/Articles/105273/Create-RESTful-WCF-Service-API-Step-By-Step-Guide
I am using the below code to call a ashx page. But it's not working for me. I have place my code here. I always got the error message message "Request Failed". Please help me..
<script type="text/javascript">
function CallLoginHandler(user, pass) {
alert(user);//Got value
alert(pass);//Got Value
$(function(){
$.ajax({
type: "POST",
url: "../handler/JQGridHandler.ashx?MainPage=GetUserDetails&Type=2&user=" + user + "&pass=" + pass + "",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnComplete,
error: OnFail
});
return false;
});
}
function OnComplete(result) {
alert([result.Id, result.Name, result.Age, result.Department]);
}
function OnFail(result) {
alert('Request Failed');
}
</script>
remove these lines:
$(function(){ // <----remove this
return false; // and this
}); // and this too
Update to this function:
function CallLoginHandler(user, pass) {
$.ajax({
type: "POST",
url: "../handler/JQGridHandler.ashx", // updated url
data: { // pass your data like this since type is post
MainPage:"GetUserDetails",
Type:2,
user:user,
pass:pass
},
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnComplete,
error: OnFail
});
}
and also your url is not correct:
url: "../handler/JQGridHandler...... + pass + "",
// --here you have a blank `""` after pass-----^
and since your type: "post" so you can pass the data like this:
data: {
MainPage:"GetUserDetails",
Type:2,
user:user,
pass:pass
},
Separate your string into a javascript object to be encoded and sent to the server as JSON based on your content type. Also, get rid of $(function(){ in your function call, it's useless here.
$.ajax({
type: "POST",
url: "../handler/JQGridHandler.ashx';
contentType: "application/json; charset=utf-8",
dataType: "json",
data: {
MainPage: 'GetUserDetails',
Type: 2,
user: user,
pass: pass
}
success: OnComplete,
error: OnFail
});
If this doesn't work, then the issue is likely one of the following:
The URL address is wrong
The server is evaluating a GET as opposed to a POST request
The server expects, application/x-www-form-urlencoded but you've declared it's json
You have a routing issue
Note: Do not send your user and pass in query string.
function CallLoginHandler(user, pass) {
$.ajax({
type: "POST",
url: "../handler/JQGridHandler.ashx",
data: {
MainPage: 'GetUserDetails',
Type: 2,
user: user,
pass: pass
},
// DO NOT SET CONTENT TYPE to json
// contentType: "application/json; charset=utf-8",
// DataType needs to stay, otherwise the response object
// will be treated as a single string
dataType: "json",
success: OnComplete,
error: OnFail
});
});
}
Your handler.ashx file
using System;
using System.Web;
using Newtonsoft.Json;
public class Handler : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string user= context.Request.Form["user"];
//.....
var wrapper = new { d = myName };
// in order to use JsonConvert you have to download the
// Newtonsoft.Json dll from here http://json.codeplex.com/
context.Response.Write(JsonConvert.SerializeObject(wrapper));
}
public bool IsReusable
{
get
{
return false;
}
}
}
source
I have the following Webmethod in my C#/.NET web-application, file lite_host.aspx.cs:
[WebMethod]
public static bool UpdatePage(string accessCode, string newURL)
{
bool result = true;
try {
HttpContext.Current.Cache[accessCode] = newURL;
}
catch {
result = false;
}
return result;
}
It should get the values of "accessCode" and "newURL" from a JavaScript function via a jQuery AJAX call with and make the appropriate changes in Cache:
function sendUpdate() {
var code = jsGetQueryString("code");
var url = $("#url_field").val();
var options = { error: function(msg) { alert(msg.d); },
type: "POST", url: "lite_host.aspx/UpdatePage",
data: {'accessCode': code, 'newURL': url},
contentType: "application/json; charset=utf-8",
dataType: "json",
async: false,
success: function(response) { var results = response.d; } };
$.ajax(options);
}
However when I call the sendUpdate() function, I my script ends on $.ajax error and I'm getting an alert text "undefined".
Undefined means that msg.d doesn't exist. Try doing a console.log(msg) and use Chrome's debugger to see what is outputted (yeah, I know) to the console.