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.net,ajax jqueary

 

i have a webmethod like bellow

 

 [webmethod]

[WebMethod]

public static ColdStorage.Entity.DeviceDataDetails GetDeviceData(string abc,string 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.net,c#,ajax jqauery