Check internet in connect or not

Here's an easy way to do it by calling the API function InternetGetConnectedState:

using System;

using System.Runtime.InteropServices;

class Test

{

[DllImport("wininet.dll")]

extern static bool InternetGetConnectedState(out uint lpdwFlags, uint dwReserved);

static void Main()

{

uint flags;

bool isConnected = InternetGetConnectedState(out flags, 0);

if (isConnected)

Console.WriteLine("This machine is currently connected to the internet");

else

Console.WriteLine("This machine is not currently connected to the internet");

Console.ReadKey();

}

}

If you need it, it's also possible to tell what sort of connection you have by examining the 'flags' variable after the call.

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