How to check the Internet connection with .NET, C#, and WPF

Question

I am using .NET, C# and WPF, and I need to check whether the connection is opened to a certain URL, and I can\'t get any code to work that I have found on the Internet.

Answer 1

I think this will be more accurate when it comes windows applications, Windows form or WPF apps, Instead of using WebClient or HttpWebRequest,

public class InternetChecker
{
    [System.Runtime.InteropServices.DllImport("wininet.dll")]
    private extern static bool InternetGetConnectedState(out int Description, int ReservedValue);

    //Creating a function that uses the API function...
    public static bool IsConnectedToInternet()
    {
        int Desc;
        return InternetGetConnectedState(out Desc, 0);
    }

}

While calling write

if(InternetCheckerCustom.CheckNet())
{
  // Do Work 
}
else
{
  // Show Error MeassgeBox 
}