C# Signature:

[DllImport("Wlanapi.dll",SetLastError=true)]
public static extern uint WlanScan(IntPtr hClientHandle,ref Guid pInterfaceGuid,IntPtr pDot11Ssid,IntPtr pIeData,IntPtr pReserved);

VB Signature:

<DllImport("Wlanapi.dll", SetLastError:=True)>
Public Shared Function WlanScan(ByVal hClientHandle As IntPtr, ByRef pInterfaceGuid As Guid, ByVal pDot11Ssid As IntPtr, ByVal pIeData As IntPtr, ByVal pReserved As IntPtr) As UInteger
End Function
Declare Function WlanScan Lib "wlanapi.dll" (TODO) As TODO

User-Defined Types:

pDot11Ssid : Pointer to a DOT11_SSID structure.

pIeData : Pointer to a WLAN_RAW_DATA structure.

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

This method just tells the interface to start doing a scan. If you want to get results as they come back, you have to register a callback function. An easier way is to call this method, wait a while, then use WlanGetAvailableNetworkList

Tips & Tricks:

Please add some!

Sample Code:

C#

      Guid g;
      //wlanHndl is the handle returned previously by calling [WlanOpenHandle]
      for (int i = 0; i < infoList.dwNumberOfItems; i++)
      {
      g = infoList.InterfaceInfo[i].InterfaceGuid;
      uint resultCode = WlanScan(wlanHndl, ref g, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
      if (resultCode != 0)
          return;
      }

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