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";
}
