1  < UserControl  x:Class ="SilverlightOOBDemo.MainPage"

 2      xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

 3      xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml"

 4      xmlns:d ="http://schemas.microsoft.com/expression/blend/2008"

 5      xmlns:mc ="http://schemas.openxmlformats.org/markup-compatibility/2006"

 6      mc:Ignorable ="d"

 7      d:DesignHeight ="300"  d:DesignWidth ="400" >

 8 

 9       < Grid  x:Name ="LayoutRoot"  Background ="DimGray" >

10           < StackPanel  Orientation ="Vertical" >

11               < Button  x:Name ="btInstall"  Content ="安装应用到本地"  Width ="200"  Height ="50"  Click ="btInstall_Click" />

12               < TextBlock  x:Name ="lbStatus"  Foreground ="White"  HorizontalAlignment ="Center"  FontSize ="18" />

13               < TextBlock  x:Name ="lbNetworkStatus"  Foreground ="LightGreen"  HorizontalAlignment ="Center"  FontSize ="18" />

14           </ StackPanel >

15       </ Grid >

16  </ UserControl >

17 

 1  private   void  CheckNetworkStatus()

 2          {

 3               if  (NetworkInterface.GetIsNetworkAvailable())

 4              {

 5                  lbNetworkStatus.Foreground  =   new  SolidColorBrush(Color.FromArgb( 255 , 90 , 240 , 90 ));

 6                  lbNetworkStatus.Text  =   " 当前网络处于连接状态 " ;

 7              }

 8               else

 9              {

10                  lbNetworkStatus.Foreground  =   new  SolidColorBrush(Colors.Red);

11                  lbNetworkStatus.Text  =   " 当前网络处于断线状态 " ;

12              }

13          }

14 

15           private   void  NetworkChange_NetworkAddressChanged( object  sender, EventArgs e)

16          {

17              CheckNetworkStatus();

18          }

 1    public  MainPage()

 2          {

 3              InitializeComponent();

 4 

 5               if  (Application.Current.IsRunningOutOfBrowser)

 6              {

 7                  btInstall.Visibility  =  Visibility.Collapsed;

 8                  lbStatus.Text  =   " 我正在Out of Browser下运行 " ;

 9              }

10               else

11              {

12                  btInstall.Visibility  =  Visibility.Visible;

13                  lbStatus.Text  =   " 我正在浏览器中运行 " ;

14              }

15 

16               if  (Application.Current.InstallState  !=  InstallState.Installed)

17              {

18                  btInstall.IsEnabled  =   true ;

19 

20              }

21               else

22              {

23                  btInstall.IsEnabled  =   false ;

24                  btInstall.Content  =   " 应用已经安装到本地 " ;

25              }

26 

27              CheckNetworkStatus();

28 

29              Application.Current.InstallStateChanged  +=  Current_InstallStateChanged;

30              NetworkChange.NetworkAddressChanged  +=   new  NetworkAddressChangedEventHandler(NetworkChange_NetworkAddressChanged);

31 

32          }