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; 
    }

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";
}

Here, Simple Angularjs Ajax Call to WebMethod and get response

<div ng-app="myapp" ng-controller="MyController" >

  <div ng-click="getData()">GetData</div> <br />     
  {{showData}}
</div>    
_____________________________________________________
<script>
    var test = angular.module("myapp", []);
    test.controller("MyController", function ($scope, $http) {
            $scope.getData = {};
            $scope.getData = function () {

                try {
                    // Call to Web Method
                    var httpRequest = $http({
                        method: "POST",
                        url: "AjaxCall.aspx/test",
                        dataType: 'json',
                        data: {},      //use if want send parameter ::  data: {id:1},
                        headers: {
                            "Content-Type": "application/json"
                        }
                    });

                    // if success 
                    httpRequest.success(function (data, status) {
                        $scope.showData = data.d;
                        console.log(JSON.parse(data.d));  // conversion string to json format
                    });

                    // if fail
                    httpRequest.error(function (data, status) {
                        $scope.status = status;
                        console.log(status);
                    });
                }
                catch (e) {
                    console.log(e + " Some Error");
                }

            };
        });
</script>

Code behind page:

// AjaxCall.aspx.cs file
[WebMethod]
public static string test()  // if parameterized call :: test(string id)
{
    return "succeed";
}

来源：https://stackoverflow.com/questions/24076175/get-json-data-from-asp-net-webmethod-and-consume-in-angularjs

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ASP.NET

angularjs

webmethod