C# Signature:

[DllImport("Wlanapi.dll", SetLastError = true)]
public static extern uint WlanGetAvailableNetworkList(IntPtr hClientHandle, ref Guid pInterfaceGuid, uint dwFlags, IntPtr pReserved, ref IntPtr ppAvailableNetworkList);

VB Signature:

Declare Function WlanGetAvailableNetworkList Lib "wlanapi.dll" (TODO) As TODO

User-Defined Types:

private const uint WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_ADHOC_PROFILES = 0x00000001;
private const uint WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES = 0x00000002;

WLAN_AVAILABLE_NETWORK_LIST

Alternative Managed API:

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Notes:

None.

Tips & Tricks:

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Sample Code:

C#

IntPtr ppAvailableNetworkList = new IntPtr();
Guid pInterfaceGuid = ((WLAN_INTERFACE_INFO)wlanInterfaceInfoList.InterfaceInfo[0]).InterfaceGuid;
WlanGetAvailableNetworkList(ClientHandle, ref pInterfaceGuid, WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES, new  IntPtr(), ref  ppAvailableNetworkList);
WLAN_AVAILABLE_NETWORK_LIST wlanAvailableNetworkList = new WLAN_AVAILABLE_NETWORK_LIST(ppAvailableNetworkList);
    for (int j = 0; j < wlanAvailableNetworkList .dwNumberOfItems; j++)
    {
    Interop.WLAN_AVAILABLE_NETWORK network = list.wlanAvailableNetwork[j];
    Console.WriteLine("Available Network: ");
    Console.WriteLine("SSID: " + network.dot11Ssid.ucSSID);
    Console.WriteLine("Encrypted: " + network.bSecurityEnabled);
    Console.WriteLine("Signal Strength: " + network.wlanSignalQuality);
    Console.WriteLine("Default Authentication: " +
        network.dot11DefaultAuthAlgorithm.ToString());
    Console.WriteLine("Default Cipher: " + network.dot11DefaultCipherAlgorithm.ToString());
    Console.WriteLine();
    }

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