Many applications utilize network connection for various purposes like feeds, sending & receiving data to/from server, etc. The following article explains how one can detect if the network connection is available or not.

Network API Information

• NetworkInterface Class helps in providing network information to the developers. It helps detect if the network is on/off, address etc.
• NetworkInterface::GetIsNetworkAvailable is used to check if the network connection is available.The network connection is considered to be available if interface is not in loopback or is marked as “up”.
• Namespace: System.Net.NetworkInformation

Example Code to understand the network connection

namespace NetworkTest
{
    public partial class MainPage : PhoneApplicationPage
    {
      public static readonly DependencyProperty NetProperty = 
            DependencyProperty.Register("NetworkAvailability", 
                                         typeof(string), 
                                         typeof(MainPage), 
                                         new PropertyMetadata(string.Empty));
 
        public MainPage()
        {
            InitializeComponent();
            string isNetworkAvail = 
            NetworkInterface.GetIsNetworkAvailable() ? "on" : "off";
        }    
    }
}