how to refresh a web method per a set a time interval ?

Question

Dear All  am implemeting a asp.net project that am using asp.netajax jqueary i have a webmethod like bellow [webmethod] [WebMethod] public static ColdStorage.Entity.DeviceDataDetails GetDeviceData(string abcstring cba) { /.... some code here to get data from data base ../ } and now my jqueary finction like bellow $(document).ready(function () { fnGetDeviceData(); } unction fnGetDeviceData() { var ddlDevice =$(#ddlDevice).val();//NHMSES0001;// var datepicker = $(#ddlYear).val() + - + $(#ddlMonth).val() + - + $(#ddlDate).val();// $(#datepicker).val(); $.ajax({ type: POST url: Reports.aspx/GetDevicesReport data: {'DeviceId' :  + JSON.stringify(ddlDevice) + 'Date' :  + JSON.stringify(datepicker) + } contentType: application/json; charset=utf-8 datatype: jsondata success: function (ResultSet) { if ((ResultSet.d != null) && (ResultSet.d != undefined)) { if (ResultSet.d.ResultStatus.StatusInd == -1) { var getDevice = ResultSet.d.lstReportsDetails; PopulateProducts(getDevice); } else { //LoadDropDown(); alert(ResultSet.d.ResultStatus.StatusMsg); } } } }); } the above program was called in the page load with 2 value and bind the data from databse  now i want to after binding the data from data base and after 30 seconds i want to refresh the page and get the data from database. now here the time interval i would like to mainatain in web.conifg file . please tell me how can i achive this am using asp.netc#ajax jqauery

Vincent Maverick Durano · Answer

You can store selected date in HiddenField control so you can reference the previously selected date on postbacks or on every refresh.

Prasad Bhagat · Answer

Dear Vincent Maverick Durano  Thanks for your post .your answer almost solved my problem here am refreshing the data in that time the controles selected values also changing .it was taking its defalut values .example if the device is abc and date is current date now i selected yesterday data and hit get .then the data come from database .but after 30 sec it will refresh .now i will get current date againg .so i want to avoid again loading the controle .just i want a a sepecific scenaria .jsut load the data each 30 sec but the dropdown or any controle are not update . please help how can i do that.

Vincent Maverick Durano · Answer

You can use the javascript setInterval function like: setInterval(fnGetDeviceData30000); That would call your function after every 30 seconds. If you want to store the interval in config then you can set the value from your config to a hiddenfield control and use the value of the hiddenfield in your JavaScript.