javascript - jsonp with asmx error 500 -


when try works perfact

 function test() {     debugger;     $.ajax({ url: "http://testweb.com/myapi.asmx/getpersontest",     type: "get",     contenttype: "application/json; charset=utf-8",     data: { userid: 1 },     datatype: "jsonp",     success: function(json) {         alert(json.userid + ' ' + json.firstname + ' ' + json.lastname);     },     error: function() {         alert("hit error fn!");     }     }); }

in same asmx, have method called below 

    function post_test(){  var newurl = window.location.protocol + '//' + window.location.host + '/' + window.location.pathname; var user = document.getelementbyid('username').value; var email = document.getelementbyid('email').value; debugger; $.ajax({ url: "http://testweb.com/myapi.asmx/getperson",     type: "get",     contenttype: "application/json; charset=utf-8",     data: json.stringify({ username: user, emailid: email}),     datatype: "jsonp",     success: function(json) {         alert(json.userid + ' ' + json.firstname + ' ' + json.lastname);     },     error: function(json) {         alert("hit error fn!");     } });   }

this method insert database , return same getpersontest. when call through javascript , jsonp gives 500 server error

when check in debugger , gives below error

jquery17106155389654450119_1401518867750({"message":"invalid web service call, missing value parameter: \u0027username\u0027.","stacktrace":"   @ system.web.script.services.webservicemethoddata.callmethod(object target, idictionary`2 parameters)\r\n   @ system.web.script.services.resthandler.invokemethod(httpcontext context, webservicemethoddata methoddata, idictionary`2 rawparams)\r\n   @ system.web.script.services.resthandler.executewebservicecall(httpcontext context, webservicemethoddata methoddata)","exceptiontype":"system.invalidoperationexception"});

can please me on below. thanks

the head of method 

         <webmethod(true)> _     <scriptmethod(usehttpget:=true, responseformat:=webmessageformat.json)> _         public function getperson(byval username string, byval emailid string) string  end function

and when check header in developer tool below

callback:jquery17106155389654450119_1401518867750 {"username":"testuser","emailid":"test@test.com"}: _:1401518889467 response headersview source

please check parameter username being used in mentioned contract method. because, error showing missing of username parameter.

ensure , post reply soon.


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