Windows Phone 8 – Windows Phone 8连接处理程序/ Internet可用

使用Windows.Networking.Connectivity.NetworkInformation.NetworkStatusChanged来了解网络条件何时更改,并使用Microsoft.Phone.Net.NetworkInformation.NetworkInterface属性或Windows.Networking.Connectivity.NetworkInformation属性来查看是什么.

private async void MainPage_Loaded(object sender,RoutedEventArgs e)
    {
        PrintNetworkStatus();

        NetworkInformation.NetworkStatusChanged += NetworkInformation_NetworkStatusChanged;
    }

    void NetworkInformation_NetworkStatusChanged(object sender)
    {
        PrintNetworkStatus();
    }

    private void PrintNetworkStatus()
    {
        Dispatcher.BeginInvoke(() =>
        MessageBox.Show(NetworkInterface.NetworkInterfaceType +
                        Environment.NewLine +
                        NetworkInterface.GetIsNetworkAvailable()));
    }

当我在WP8 Lumia 920上测试这个代码片段时,可以按预期方式工作.当我的手机在WiFi上启动时,我看到以下MessageBox：

一旦关闭WiFi路由器,手机上的WiFi连接就会丢失,我看到以下MessageBox：