jquery - Settings values to Session Variable from Javascript -

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i have shopping cart, time slot selection product delivery want display date next 1 week, first column(per day in per row), , timeslots in column, format below:

column1                            column2 aug 19, 2013    [radiobutton]10:00am    [radiobutton]12:00pm aug 20, 2013    [radiobutton]10:00am    [radiobutton]12:00pm aug 21, 2013    [radiobutton]10:00am    [radiobutton]12:00pm aug 22, 2013    [radiobutton]10:00am    [radiobutton]12:00pm aug 23, 2013    [radiobutton]10:00am    [radiobutton]12:00pm aug 24, 2013    [radiobutton]10:00am    [radiobutton]12:00pm aug 25, 2013    [radiobutton]10:00am    [radiobutton]12:00pm

i tried using gridview radiobuttonlist (for time slots), problem user able select time every days. alternative trying check timeslot selected @ javascript end , because want slot accessible next checkout wizard, want store selected time slot in session. able validate time slot if not selected, , value in alert, if selected. when try save value session hidden field (saved on button click @ client end), not getting session value other pages. below code trying:

 <script>         function savetohiddenfield() {             if ($("input:radio:checked").length > 0) {                 $radio = $("input:radio:checked");                 document.getelementbyid('<%= hdnfield.clientid %>').value = $radio.val();                 <% session["slot"] = hdnfield.value; %>                 window.location.href='default2.aspx'                 return true;             }             else {                 alert("nothing selected");                 return false;             }         }     </script>  <asp:button id="btnsession" runat="server" text="save session" onclientclick="return savetohiddenfield()" /> <asp:hiddenfield id="hdnfield" runat="server" />

can tell me whats wrong doing, or other alternative better option query.

issue resolved, on button click wrote below code:

session["slot"] = hdnfield.value;         response.redirect("default2.aspx");

now when page redirect default2.aspx, have session value.

thanks everyone,
specially @jasonp.


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