mvc json serialisation

Question

hi , I have a problem in json serialisation . Actually i am new to mvc3,jquery and json .net etc. i got a program to generate some reports. the reports are displaying in html table.in the controller i convert the datatable to json like this

 

string jsonData = JsonConvert.SerializeObject(dt);

//return Json(parent, JsonRequestBehavior.AllowGet);

return jsonData;

 

this is working in some systems but in my system if record exceed 21000 it will not show me the result. and the following is the code in angular

 

$http.post("../Batchwisestk/GetResult", JSON.stringify(dat)) .success(function (data, status, header, config) {

 

if the records more than 21 thousand it will not enter into the success portion. please help me