How to find a list of wireless networks (SSID's) in Java, C#, and/or C?

Question

Is there a toolkit/package that is available that I could use to find a list of wireless networks (SSID's) that are available in either Java, C#, or C for Windows XP+? Any sample code would be appreciated.

Answer 1

For C#, take a look at the Managed Wifi API, which is a wrapper for the Native Wifi API provided with Windows XP SP2 and later.

I have not tested this code, but looking at the Managed Wifi API sample code, this should list the available SSIDs.

WlanClient client = new WlanClient();
foreach ( WlanClient.WlanInterface wlanIface in client.Interfaces )
{
    // Lists all available networks
    Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList( 0 );
    foreach ( Wlan.WlanAvailableNetwork network in networks )
    {                     
        Console.WriteLine( "Found network with SSID {0}.", GetStringForSSID(network.dot11Ssid));
    }
}

static string GetStringForSSID(Wlan.Dot11Ssid ssid)
{
    return Encoding.ASCII.GetString( ssid.SSID, 0, (int) ssid.SSIDLength );
}