为什么我无法在其他浏览器中更新gridview

Question

当我在当前浏览器中上传文件时，我想在其他浏览器中更新我的gridview ..我使用signalR来实现它.. 这是我的源代码..这是我的NotificationHub.vb

Imports System.Web
Imports Microsoft.AspNet.SignalR
Namespace SignalRChat
    Public Class NotificationHub
        Inherits Hub
        Public Sub Send(name As String, message As String)
            ' Call the broadcastMessage method to update clients.
            Clients.All.broadcastMessage(name, message)
        End Sub
    End Class
End Namespace

这是 Startup.vb

Imports Microsoft.AspNet.SignalR
Imports Microsoft.Owin.Security
Imports Owin
Imports Microsoft.Owin

'add the attribute here
<Assembly: OwinStartup(GetType(SignalRTutorials.Startup))> 

Namespace SignalRTutorials
    Public Class Startup
        Public Sub Configuration(app As IAppBuilder)
            'app.MapSignalR()
            Dim hubConfiguration = New HubConfiguration()
            hubConfiguration.EnableDetailedErrors = True
            hubConfiguration.EnableJavaScriptProxies = True
            app.MapSignalR("/signalr", hubConfiguration)
        End Sub
    End Class
End Namespace

home.aspx

中的

var NotificationHub = $.connection.NotificationHub;
        NotificationHub.client.refresh = function (stock) {

            //Just some tracing purposes
            //console.log('Refresh method triggered successfully!');
            //console.log(stock);

            //Refresh the gridview with latest data
            $("#Gridview1").each(function (i) {
                if ($(this)[0].id == stock.ID) {
                    //highlight the row that has data changed then slowly fade
                    $(this).attr('style', 'background-color: yellow;');
                    $(this).animate({ backgroundColor: 'white' }, 3000);
                }
            });
        };

        $.connection.hub.start().done(function () {
            //Just to trace whether your browser successfully connected to SignalR hub
            console.log('Connected to SignalR hub, connection ID = ' + $.connection.hub.id);
        })

和home.aspx.vb中的最后一个（我在上传代码后编写此代码）

Dim context = GlobalHost.ConnectionManager.GetHubContext(Of NotificationHub)()
Dim aTimer = New System.Timers.Timer(1000)
aTimer.Interval = 3000
aTimer.Enabled = True
context.Clients.All.refresh()

我希望你能帮助我... 谢谢:)）