asp.net - How to pass a selected dropdown value to the MVC controller? -


this ajax method , mvc controller. dropdownlist in url "http://localhost:1424/home/drop". after navigating, choose state dropdownlist , when navigate url "http://localhost:1424/home/getstates", json data null. json on url {"selectedcountyid":null}. please assist.!!!!!!!!!!!!!!!!!

  $('.ddlcountry').change(function () {         $('#ddlstate').empty();         $.ajax({             type: "post",             datatype:"json",             url: "home/getstates",             data: { id: $('.ddlcountry').val() },         });     });      public actionresult getstates(string id)     {          return json(new { selectedcountyid = id }, jsonrequestbehavior.allowget);     }

your using class selector, may finding multiple elements in dom.

also advise use url.action generate urls, don't string way url cause trouble in future.

modify jquery code :

$('.ddlcountry').change(function () {         $('#ddlstate').empty();         var selected = $(this).val(); // current dropdown element selected value         $.ajax({             type: "post",             datatype:"json",             url: '@url.action("getstates","home")',             data: { id: selected  },         }); });

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