How to get javascript values on code behind in c# -
i need javascript values on code behind in c#.i know can use hidden field there no server control on page postback.please tell me how can vales in code behind.
here code:
<html> <head> <title>facebook logged in user details username,email,profile image</title> <script src="jquery-1.6.2.min.js" type="text/javascript"></script> <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script> </head> <body> <script> // load sdk asynchronously (function (d) { var js, id = 'facebook-jssdk', ref = d.getelementsbytagname('script')[0]; if (d.getelementbyid(id)) { return; } js = d.createelement('script'); js.id = id; js.async = true; js.src = "//connect.facebook.net/en_us/all.js"; ref.parentnode.insertbefore(js, ref); } (document)); // init sdk upon load window.fbasyncinit = function () { fb.init({ appid: 'appid', // app id channelurl: '//' + window.location.hostname + '/channel', // path channel file status: true, // check login status cookie: true, // enable cookies allow server access session xfbml: true // parse xfbml }); // listen , handle auth.statuschange events fb.event.subscribe('auth.statuschange', function (response) { if (response.authresponse) { // user has auth'd app , logged facebook var uid = "http://graph.facebook.com/" + response.authresponse.userid + "/picture"; fb.api('/me', function (me) { document.getelementbyid('auth-displayname').innerhtml = me.name; document.getelementbyid('myjsstring').value = me.name; alert(document.getelementbyid('myjsstring').value); document.getelementbyid('email').innerhtml = me.email; document.getelementbyid('profileimg').src = uid; // document.getelementbyid('ctl00_cphdefault_tctps_tpprod_ctl01_tcproduction_tpnewtitlesstatus_changedrowsindiceshiddenfield').value = uid; // alert('yyy'); }) document.getelementbyid('auth-loggedout').style.display = 'none'; document.getelementbyid('auth-loggedin').style.display = 'block'; } else { // user has not auth'd app, or not logged facebook document.getelementbyid('auth-loggedout').style.display = 'block'; document.getelementbyid('auth-loggedin').style.display = 'none'; } }); $("#auth-logoutlink").click(function () { fb.logout(function () { window.location.reload(); }); }); } </script> <h1> facebook login authentication example</h1> <div id="auth-status"> <div id="auth-loggedout"> <div id="result" class="fb-login-button" autologoutlink="true" scope="email,user_checkins">login</div> </div> <div id="auth-loggedin" style="display: none"> name: <b><span id="auth-displayname"></span></b>(<a href="#" id="auth-logoutlink">logout</a>)<br /> email: <b><span id="email"></span></b><br /> profile image: <img id="profileimg" /> <form runat="server"> <asp:hiddenfield runat="server" id="myjsstring" /> </form> </div> </div> </body> </html> you can see there no server control how can name,uid variables in code behind.
thanks
i investigate use of asp.net ajax page methods, because allow script callable stand-alone web services live in .aspx page, this:
page method in code-behind file (call default.aspx discussion's sake):
[webmethod] public static string savedata(string name, string uid) { // logic here want name , uid values (i.e. save database, call service, etc.) } jquery call default.aspx's savedata method:
$.ajax({ type: "post", url: "default.aspx/savedata", data: "{'name':'john', 'uid':'abc123'}", contenttype: "application/json; charset=utf-8", datatype: "json", success: function(msg) { // interesting here. } }); notes: asp.net ajax page methods automatically encode response json not see json serialization in code-behind or serialization logic @ all.
for more information asp.net ajax page methods check out using jquery directly call asp.net ajax page methods
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