Question

I need get it independent if the network connection is active or not.
I need get only dial up connection.

in this picture Claro is default netowork connection name.

Have no idea how do this. I hope this is clear. Thanks in advance!

Answer 1

To find the currently selected default connection for connecting to the internet, which can be set in a couple of ways, you need to read the registry key HKCU\RemoteAccess InternetProfile. This will contain the name of the adapter.

Now the fun part: you will need to use DotRas.

Once you have this downloaded, installed, and reference in your project, you can use code similar to the following:

// Get the default adapter
string defaultAdapter = Registry.GetValue(@"HKEY_CURRENT_USER\RemoteAccess", "InternetProfile", "") as string;

foreach (RasConnection connection in RasConnection.GetActiveConnections())
{
    if (connection.EntryName.Equals(defaultAdapter, StringComparison.InvariantCultureIgnoreCase))
    {
        if (connection.GetConnectionStatus().ConnectionState == RasConnectionState.Connected)
        {
             // Do something
        }
    }
    // Done searching
    break;
}