Calling Web Service using Ajax JQuery

Calling Web Service using Ajax JQuery

Below is Ajax Function  Calling Code Behind method for Saving the Data
this 3 StudentId, Date, Status parameter that passing value to code behind


  function PopulateData(StudentId, Date, Status) {
            var pageUrl = '<%=ResolveUrl("MonthlyAttendence.aspx")%>'
            //alert(StudentId + ' , ' + Date);
            $.ajax({
                type: "POST",
                url: pageUrl + '/SaveData',
                data: "{ 'StudentID':'" + StudentId + "', Date:'" + Date + "', Status:'" + Status + "'}",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: OnCitiesPopulated,
                failure: function (response) {
                    alert(response.d);
                }
            });
        }

SaveData are Web Method at Code Behide

.cs Page



    [WebMethod]
        static public string SaveData(string StudentID, string Date, string Status)
        {
            string[] batch = HttpContext.Current.Session["BatchIds"].ToString().Split(',');
            string BatchID;
            string[] dt = Date.Split('_');
            if (dt[1] == "0") BatchID = batch[0];
            else BatchID = dt[1];

            Parameter(StudentID, dt[0], Status, BatchID);
            return null;
        }