angleJS+asp.net mvc+SignalR implementiert Message Push

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;
namespace ZmeiOA.Services
{
　　 [Authorize]
    [HubName("ZmHub")]
    public class MsgHub : Hub
    {/// <summary>
        /// 连接
        /// </summary>
        /// <returns></returns>
        public override System.Threading.Tasks.Task OnConnected()
        {
            Groups.Add(Context.ConnectionId, Context.User.Identity.Name);
            return base.OnConnected();
        }
        /// <summary>
        /// 重新连接
        /// </summary>
        /// <returns></returns>
        public override System.Threading.Tasks.Task OnReconnected()
        {
            Groups.Add(Context.ConnectionId, Context.User.Identity.Name);
            return base.OnReconnected();
        }
        /// <summary>
        /// 断开连接
        /// </summary>
        /// <param name="stopCalled"></param>
        /// <returns></returns>
        public override System.Threading.Tasks.Task OnDisconnected(bool stopCalled)
        {
            Groups.Remove(Context.ConnectionId, Context.User.Identity.Name);
            return base.OnDisconnected(stopCalled);
        }
    }
}

/// <summary>
　　/// 消息推送上下文
　　/// </summary>
　　protected static IHubContext ZmHubContext = GlobalHost.ConnectionManager.GetHubContext<MsgHub>();

public static ApplyForm Save(FormView view)
{　　
　　 //省略业务操作...
　　 //...
    //通知待办事项
    ZmHubContext.Clients.Groups(app.AuditorIds.Split(',')).broadcastTodo(app.AuditorIds, new { type = "new", data = app });
    return app;
}

　var zmHub = $.connection.ZmHub;
　　var zmApp = angular.module('zmApp', ['ngRoute', 'ngResource', 'ngSanitize', 'ngMessages', 'ngSVGAttributes']).value('zmHub', zmHub);

zmHub.client.broadcastTodo = function (userIds, obj) {
    //通知下级控制器有待办事项
    $scope.$broadcast('todoschanged', obj);
    //显示桌面通知
    if (obj.type == 'new') {
　　　　 //桌面通知标题
        var title = '来自[' + obj.data.ApplicantName + ']的申请单';
        //申请单类型名称
        var formTypeName = DefaultService.getEnumText(17, obj.data.Type);
        var msg = '[' + formTypeName + ']' + obj.data.Name;
　　　　 //桌面通知方法
        NotifyService.Notify('todos', title, msg);
    }
}

//接收推送的待办事项
$scope.$on('todoschanged', function (d, obj) {
    $scope.$apply(function () {
　　　　 //如果是新增数据，在当前列表中添加一条
        if (obj.type == 'new') {
            $scope.todoApps.unshift(obj.data);
        }
        else if (obj.type == 'delete') {//如果是撤销申请，则把当前列表中那条数据删除
            for (var j = 0; j < $scope.todoApps.length; j++) {
                if ($scope.todoApps[j].Id == obj.data.Id) {
                    $scope.todoApps.splice(j, 1);
                    break;
                }
            }
        }
    });
});

//桌面通知服务
zmApp.factory('NotifyService', function () {
    return {
        Notify: function (icon, title, msg) {
            // At first, let's check if we have permission for notification
            // If not, let's ask for it
            if (window.Notification && Notification.permission !== "granted") {
                Notification.requestPermission(function (status) {
                    if (Notification.permission !== status) {
                        Notification.permission = status;
                    }
                });
            }
            var iconPath = '/Content/images/icons/' + (icon || 'info') + '.png';
            var options = {
                lang: 'zh-CN',
                body: msg,
                icon: iconPath
            };
            var notify;
            // If the user agreed to get notified
            if (window.Notification && Notification.permission === "granted") {
                notify = new Notification(title, options);
            }
            else if (window.Notification && Notification.permission !== "denied") {
                Notification.requestPermission(function (status) {
                    if (Notification.permission !== status) {
                        Notification.permission = status;
                    }
                    if (status === "granted") {
                        notify = new Notification(title, options);
                    }
                    else {
                        console.log('您禁止了桌面通知，无法推送到您的桌面！');
                    }
                });
            }
            else {
                console.log('您禁止了桌面通知，无法推送到您的桌面！');
            }
            if (notify) {
                notify.onclose = function (evt) {
                };
                //点击切换到浏览器
                notify.onclick = function () {
                    window.focus();
                };
            }
        }
    };
});