How to display a message box if there is no internet C#

Question

How to display a message box if there is no internet connection in the system in C#? Pls provide the code for that!

Answer 1

A way =>

if(IsInternetConnected() == 0)
    MessageBox.Show("Connected to Internet");
else
    MessageBox.Show("Not connected to Internet");

Declaration :

    [DllImport("Connect.dll", CharSet = CharSet.Unicode, SetLastError = true)]
    public static extern HRESULT IsInternetConnected();