So, as an example, I will show an implementation in C# about the application requires Internet Connection. ( Just in case network is not available when the application is about to be started. )
1. Add "Using directives" in App.xaml.cs
using System.Net.NetworkInformation;
using Windows.UI.Popups;
2. Add a new method in App.xaml.cs
private async void MessageBox(string txt, UICommand cmd)
{
var md = new MessageDialog(txt);
md.Commands.Add(cmd);
await md.ShowAsync();
}
3. Custome the method "OnLaunched" in App.xaml.cs
protected override void OnLaunched(LaunchActivatedEventArgs args)
{
if (!NetworkInterface.GetIsNetworkAvailable())
{
UICommand cmd = new UICommand("Close", (p) => { this.Exit(); });
MessageBox("Network is not available。", cmd);
}
// Do not repeat app initialization when already running, just ensure that
// the window is active
if (args.PreviousExecutionState == ApplicationExecutionState.Running)
{
Window.Current.Activate();
return;
}
.........
}
I think there must be better solution than this.
So I need to check out more informations about windows8...
