using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; namespace Zhaizj.Framework.Utils { public class WebState { [DllImport("wininet.dll")] private extern static bool InternetGetConnectedState(out int connectionDescription, int reservedValue); public static bool IsInternetConnected() { int i = 0; bool state = InternetGetConnectedState(out i, 0); return state; } } }