Question

我尝试在.NET 4下的WebForms应用程序中为仪表板构建通知。我已经下载了SignalR版本1.2（.net客户端和服务器），并准备了一个简单的通知示例。不幸的是它不起作用，我无法理解为什么。如果我输入http://myserver.com/notificationSample/signalr/hubs，则会出现javascript代理，看起来没问题。

看看下面的实现，有人看到任何错误吗？

a）中心实施

[HubName("NewMessage")]
public class NewMessageNotifier : Hub
{
    public void NotifyDashboards()
    {

        Clients.All.NewMessageCreated();
    }
}

b）通知调用者（服务器）〜/ Pages / NotificationCaller.aspx

public partial class NotificationCaller : Page
{
    private HubConnection connection;
    private IHubProxy proxy;

    protected void Page_Load(object sender, EventArgs e)
    {
            connection = new HubConnection( "http://myserver.com/notificationSample" );

            proxy = connection.CreateHubProxy( "NewMessage" );

            connection.Start().Wait();                

    }
    // it is handler for onclick event on Button control
    protected void NotifyDashboard(object sender, EventArgs e)
    {
        proxy.Invoke( "NotifyDashboards" ).Wait();
    }
}

c）仪表板（客户端，监听器）〜/ Pages / Dashboard.aspx

public partial class Dashboard: BasePage
{
    private HubConnection connection;

    protected void Page_Load(object sender, EventArgs e)
    {
        connection = new HubConnection( "http://myserver.com/notificationSample" );

        var proxy = connection.CreateHubProxy("NewMessage");

        proxy.On("NewMessageCreated", ShowNotification);

        connection.Start();
    }

    private void ShowNotification()
    {
        ShowAlert("New message added!");
    }

}