Any way to turn the “internet off” in windows using c#?

Question

I am looking for pointers towards APIs in c# that will allow me to control my Internet connection by turning the connection on and off.

I want to write a little con

Answer 1

This is what I am currently using (my idea, not an api):

System.Diagnostics;    

void InternetConnection(string str)
{
    ProcessStartInfo internet = new ProcessStartInfo()
    {
        FileName = "cmd.exe",
        Arguments = "/C ipconfig /" + str,
        WindowStyle = ProcessWindowStyle.Hidden
    };  
    Process.Start(internet);
}

Disconnect from internet: InternetConnection("release");
Connect to internet: InternetConnection("renew");

Disconnecting will just remove the access to internet (it will show a caution icon in the wifi icon). Connecting might take five seconds or more.

Out of topic:
In any cases you might want to check if you're connected or not (when you use the code above), I better suggest this:

System.Net.NetworkInformation;

public static bool CheckInternetConnection()
{
   try
   {
       Ping myPing = new Ping();
       String host = "google.com";
       byte[] buffer = new byte[32];
       int timeout = 1000;
       PingOptions pingOptions = new PingOptions();
       PingReply reply = myPing.Send(host, timeout, buffer, pingOptions);
            return (reply.Status == IPStatus.Success);
    }
    catch (Exception)
    {
       return false;
    }
}