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Categories / C# by API / System Net Networknformation

 

NetworkInterface GetIsNetworkAvailable

using System; using System.Net.NetworkInformation; class MainClass {     static void Main() {         if (NetworkInterface.GetIsNetworkAvailable()) {             NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();             foreach (NetworkInterface ni in interfaces) {                 foreach (UnicastIPAddressInformation addr in ni.GetIPProperties().UnicastAddresses) {                     Console.WriteLine("         - {0} (lease expires {1})", addr.Address, DateTime.Now + new TimeSpan(0, 0, (int)addr.DhcpLeaseLifetime));                 }             }         } else {             Console.WriteLine("No network available.");         }     } }