Get Json Data From Asp.Net Webmethod and Consume in angularJS

Can any one guide me how to get json data from asp.net webmethod, and consume it in angularJS.

app.controller('MainController', ['$scope', function ($scope, $http) { 
    try { 
    $http({ method: 'GET', url: 'ProblemList.aspx/GetProblemList' })
.success(function (data, status, headers, config) { 
    alert(data); }).error(function (data, status, headers, config) { 
    }); 
    } catch (e) { 
    throw e; 
    }

Solution

I had the same issue, I tried many different ways, this is the way I found it works... ( I think the tricks is a combination of the header config, and the json parameter with "data : {}", I am not sure but It was really tricky )

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestAngular.aspx.cs" Inherits="COEWebApp.NCoe.Employees.TestAngular" %>

<!DOCTYPE html>
<html lang="en">

<head>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.5/angular.min.js"></script>
</head>

<body ng-app="myapp">

  <div ng-controller="MyController" >
    <button ng-click="myData.doClick(item, $event)">Send AJAX Request</button>
    <br/>
    Data from server: {{myData.fromServer}}
  </div>

  <script>
      angular.module("myapp", [])
          .controller("MyController", function ($scope, $http) {
              $scope.myData = {};
              $scope.myData.doClick = function (item, event) {

                  $http.post('TestAngular.aspx/GetEmployees', { data: {} })
                    .success(function (data, status, headers, config) {
                        $scope.myData.fromServer = data.d;
                    })
                    .error(function (data, status, headers, config) {
                        $scope.status = status;
                    });

              }


          }).config(function ($httpProvider) {

              $httpProvider.defaults.headers.post = {};

              $httpProvider.defaults.headers.post["Content-Type"] = "application/json; charset=utf-8";

          });
  </script>

</body>

</html>

And on the same aspx page on the codebehid this is the simple code...

[WebMethod]
public static string GetEmployees()
{
  return "OK-test";
}