c# - Ajax not posting data to controller -

i posting data through ajax action, problem not able data posted through ajax in controller action. while debugging, call gets transferred action dont in data not 'null'.

here ajax call,

 $.ajax({             type: 'post',             url:' @url.action("postamount", "deal")',             data: { country: 2, amount: 4.02 },             datatype:json,              success: function (data) {                 alert("hiiii"+data);             }         }); 

and action,

 [httppost]         public jsonresult postamount(int country,double amount)         {             allocationviewmodel mod = new allocationviewmodel();             return json(mod);         } 

try this:

var datatopost = "{ country:'" + 2 + "', amount:" + 4.02 + "}";  $.ajax({     url: @url.action("postamount", "deal")',     type: "post",     datatype: 'json',     data: datatopost,     cache: false,     contenttype: "application/jsonrequest; charset=utf-8",     success: function (data) {         alert("hi"+ data);     } });