SignalR聊天应用程序用户定义的ConnectionId不起作用

Question

我是signalR和angularJS的新手。我最近在asp.net MVC5中使用signalR和angularJs开发了聊天应用程序。

我将Context.ConnectionId更改为用户登录ID。所以每次刷新，ConnectionId都不会刷新。我可以查看所有登录/在线用户，我可以通过选定的用户发送消息，但接收者看不到发送者发送的消息。

在ChatHub.cs中

public void SendPrivateMessage(long toUserId, string message,long connid)
        {
            long fromUserId =Convert.ToInt32(connid);
            var toUser = loggedInUsers.FirstOrDefault(x => x.ConnectionId == toUserId);
            var fromUser = loggedInUsers.FirstOrDefault(x => x.ConnectionId == fromUserId);
            if (toUser != null && fromUser != null)
            {
               // 
                Clients.Caller.sendPrivateMessage(toUserId, fromUser.Username, message);
                Clients.Client(Convert.ToString(toUserId)).sendPrivateMessage(fromUserId, fromUser.Username, message);
            }
        }

在Controler.js

signalR.RecievingPrivateMessage(function (toname, fromname, msg) {


            console.log($scope.ShowPrivateWindow == false);
           if ($scope.ShowPrivateWindow == false) {
                $scope.ShowPrivateWindow = true;
            }
           // var msgBdy = { room: r, msgx: { message: msg.message, sender: msg.sender, css: msg.css } };
            //$scope.chatHistory.push(msgBdy);
            $scope.PrivateMessages.push({ to: toname, from: fromname, message: msg });
            console.log($scope.PrivateMessages);
            if ($scope.$parent.UserName != fromname) // otheruser's pm
            {
                console.log('here');
                if ($scope.UserInPrivateChat == null)
                {
                    $scope.UserInPrivateChat = { Username: fromname, ConnectionId: toname }
                }
            }
            /// To Scroll the message window.
            if ($("#PrivateChatArea div.panel-body").length == 1) {
            var    $container = $("#PrivateChatArea div.panel-body");
                $container[0].scrollTop = $container[0].scrollHeight;
                $container.animate({ scrollTop: $container[0].scrollHeight }, "fast");
            }
            $scope.$evalAsync();
           // $scope.AddMessageToRoom(msgBdy);
        });

这里会出现什么问题？我无法追踪错误。