
xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml"
WIDth ="400" Height ="300" >
< GrID x:name ="LayoutRoot" Background ="White" >
< GrID.RowDeFinitions >
< RowDeFinition Height ="150" />
< RowDeFinition Height ="150" />
</ GrID.RowDeFinitions >
< Image WIDth ="100" Height ="100" x:name ="StateIcon" GrID.Row ="0" HorizontalAlignment ="Center" />
< TextBlock name ="NetWorkState" Foreground ="Red" FontSize ="20" GrID.Row ="1" FontWeight ="Bold" HorizontalAlignment ="Center" > 当前状态未知 </ TextBlock >
</ GrID >
</ UserControl >
而相应的CS代码如下:
namespace Off_Online
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
this .Loaded += new RoutedEventHandler(MainPage_Loaded);
}
voID MainPage_Loaded( object sender, RoutedEventArgs e)
{
NetworkChange.NetworkAddressChanged += OnNetworkAddressChanged;
UpdateNetWorkState();
}
voID UpdateNetWorkState()
{
string state = NetworkInterface.GetIsNetworkAvailable() ? " Online " : " Offline " ;
StateIcon.source = new System.windows.Media.Imaging.BitmAPImage( new Uri( " /Images/ " + state + " .jpg " , UriKind.relative));
NetWorkState.Text = NetworkInterface.GetIsNetworkAvailable() ? " 在线 " : " 离线 " ;
}
voID OnNetworkAddressChanged( object sender, EventArgs e)
{
UpdateNetWorkState();
}
}
}
下面就是其运行效果,首先是在线状态:
然后拔掉网线,就会显示离线状态了:
好了,今天的内容就先到这里了,源码下载,请 点击这里:) 总结
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