javascript - Adding Session Variable in C# using Ajax -


i need add variable session state using ajax , when tries didn't work. can 1 please me on this. when click button redirect travellerinfo.aspx page

below test.aspx 

   <%@ page language="c#" autoeventwireup="true" codebehind="test.aspx.cs" inherits="hotelbeds.test" %>  <!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">  <!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <title>jquery ui tooltip - custom animation demo</title> <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" /> <script src="http://code.jquery.com/jquery-1.9.1.js"></script> <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script> <link rel="stylesheet" href="/resources/demos/style.css" /> <script type="text/javascript">     function testbook(hotelcode) {          $.ajax({             type: "post",             url: "test.aspx/addsession",             data: "{'hotelcode':'" + hotelcode + "'}",             contenttype: "application/json; charset=utf-8",             datatype: "json",             success: function (msg) {                 window.location.href = "hotelresul.aspx";             },             error: function (err) {                 window.location.href = "travellerinfo.aspx";             }         });      }  </script> </head> <body>     <form id="form1" runat="server">      <div>      </div>     </form> </body>  </html>

cs test.aspx

using system; using system.collections.generic; using system.linq; using system.web; using system.web.ui; using system.web.ui.webcontrols; using system.data.sqlclient; using system.web.services; using system.configuration; using system.drawing;  namespace hotelbeds {      public partial class test : system.web.ui.page     {          protected void page_load(object sender, eventargs ea)         {             imagebutton testbtn = new imagebutton();             testbtn.onclientclick = "testbook('15000')";             form1.controls.add(testbtn);          }         [webmethod(enablesession = true)]         public static void addsession(string hotelcode)         {             httpcontext.current.session.add("hotelcode", hotelcode);          }       } }

it must be

[webmethod (enablesession=true)]         public static void addsession(string hotelcode)         {             httpcontext.current.session.add("hotelcode", hotelcode);          }

please note: method must public, static , enablesession attribute must true.

edit 1:

'return false' added prevent default function of button. default function of button post form server. alternatively, event.preventdefault() can used prevent default functionality.

<script type="text/javascript">     function testbook(hotelcode) {          $.ajax({             type: "post",             url: "test.aspx/addsession",             data: "{'hotelcode':'" + hotelcode + "'}",             contenttype: "application/json; charset=utf-8",             datatype: "json",             success: function (msg) {                 window.location.href = "hotelresul.aspx";             },             error: function (err) {                 window.location.href = "travellerinfo.aspx";             }         });    return false;      }  </script>

edit 2:

 protected void page_load(object sender, eventargs ea)         {             imagebutton testbtn = new imagebutton();             testbtn.onclientclick = "return testbook('15000')";             form1.controls.add(testbtn);          }

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