- 1 year ago
Is there a way to programatically force Windows to search for new WiFi nextworks?
Yes, you can programmatically trigger Windows to search for new Wi-Fi networks using the Windows API. You can use the WlanScan
function from the Wlanapi
library to initiate a scan for available networks.
Here's an example using C# and the Wlanapi
library to trigger a Wi-Fi scan:
csharpusing System;
using System.Runtime.InteropServices;
public class WifiNetworkScanner
{
[DllImport("Wlanapi.dll")]
public static extern uint WlanOpenHandle(
uint dwClientVersion,
IntPtr pReserved,
out uint pdwNegotiatedVersion,
out IntPtr phClientHandle
);
[DllImport("Wlanapi.dll")]
public static extern uint WlanScan(
IntPtr hClientHandle,
ref Guid pInterfaceGuid,
IntPtr pDot11Ssid,
IntPtr pIeData,
IntPtr pReserved
);
[DllImport("Wlanapi.dll")]
public static extern uint WlanCloseHandle(
IntPtr hClientHandle,
IntPtr pReserved
);
public static void ScanForNetworks()
{
IntPtr handle = IntPtr.Zero;
uint negotiatedVersion;
uint result = WlanOpenHandle(2, IntPtr.Zero, out negotiatedVersion, out handle);
if (result != 0)
{
Console.WriteLine("Failed to open WLAN handle. Error code: " + result);
return;
}
Guid interfaceGuid = Guid.Empty; // Use the default wireless interface
result = WlanScan(handle, ref interfaceGuid, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (result != 0)
{
Console.WriteLine("Failed to trigger Wi-Fi scan. Error code: " + result);
}
WlanCloseHandle(handle, IntPtr.Zero);
}
public static void Main(string[] args)
{
ScanForNetworks();
}
}
In this example, the WlanOpenHandle
function is used to open a handle to the WLAN service, WlanScan
function is used to trigger the Wi-Fi scan, and WlanCloseHandle
is used to close the handle.
Please note that this example requires the Wlanapi.dll
library, which is part of the Windows SDK. You may need to add a reference to this library in your project or include the necessary import statements depending on your development environment.
Running this code will trigger Windows to scan for available Wi-Fi networks.