MVC3 (.cshtml File)
$.getJSON(URL, Data, function (data) { document.getElementById(\'divDisplayMap\').innerHTML = data;
Try to update your Controller method as shown below:
Controller
public JsonResult ZoneType_SelectedState(int x_Id, int y_Id) { var result = Json("LongString", JsonRequestBehavior.AllowGet); result.MaxJsonLength = int.MaxValue; return result; }
Hope this helps...