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c# 如何使用wlanapi连接电脑到wifi

2024-07-21 07:10:51   218人阅读

http://www.codeproject.com/Articles/72105/Manage-WiFi-with-Native-API-WIFI-on-Windows-XP-SP

 

Introduction

This article will demonstrate the ability to establish and operate a WiFi connection from a C# program using the Wireless LAN API on a Windows XP Embedded SP2 \ Windows XP Pro SP2.

Step 1

The first step was to create a function that returns the WiFi networks available for connection. Using the WLANOpenHandle, you create the client to use for the session:

Wlan.WlanOpenHandle( Wlan.WLAN_CLIENT_VERSION_XP_SP2, <--- (Wireless LAN API for Windows XP with SP2) IntPtr.Zero, ref negotiatedVersion, ref clientHandle)

　　

Step 2

Then list all the wireless LAN interfaces visible from our PC:

Wlan.WlanEnumInterfaces( clientHandle, <--- (clientHandle precedentemente istanziato) IntPtr.Zero, ref pInterfaceList)

　　

Step 3

Using the pointer to the list of available interfaces, we will populate the structure that will contain all Wlan.WLAN_INTERFACE_INFO_LIST NIC interface information:

Wlan.WLAN_INTERFACE_INFO_LIST interfaceList = 		new Wlan.WLAN_INTERFACE_INFO_LIST(pInterfaceList);

　　

Step 4

What we are still missing at this point and guidance of our interface to be passed to the function Wlan.WlanGetAvailableNetworkList, we get through this passage:

Guid InterfaceGuid = 	((Wlan.WLAN_INTERFACE_INFO)interfaceList.InterfaceInfo[0]).InterfaceGuid;

 

Step 5

Now we have all the elements to call the API Wlan.WlanGetAvailableNetworkList; declare that we will return the pointer function and proceed:

IntPtr pAvailableNetworkList = IntPtr.Zero; Wlan.WlanGetAvailableNetworkList( clientHandle,                                   InterfaceGuid,                                   Wlan.WlanGetAvailableNetworkFlags.				IncludeAllManualHiddenProfiles,                                  IntPtr.Zero,                                   out ppAvailableNetworkList)

Scroll through the list of connections:

Wlan.WLAN_AVAILABLE_NETWORK_LIST wlanAvailableNetworkList =     new Wlan.WLAN_AVAILABLE_NETWORK_LIST(pAvailableNetworkList); Wlan.WlanFreeMemory(pAvailableNetworkList); for (int j = 0; j < wlanAvailableNetworkList.dwNumberOfItems; j++) {    Wlan.WLAN_AVAILABLE_NETWORK network = wlanAvailableNetworkList.Networks[j];    string SSId = GetStringForSSID(network.dot11Ssid);    if(ssid != "")    {       //Connessione       Wifi_SetProfile(network.dot11DefaultAuthAlgorithm, SSId);    }  }

Depending on the type of connection configured for my Access Point imposed the correct profile and I connect:

static void Wifi_SetProfile(Wlan.DOT11_AUTH_ALGORITHM connType, string sNetSSId) {    switch (connType)    {       //WEP - OPen       case Wlan.DOT11_AUTH_ALGORITHM.DOT11_AUTH_ALGO_80211_OPEN:       profileXml = string.Format(          "<?xml version=\"1.0\"?>          <WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\">          <name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig>          <connectionType>ESS</connectionType><MSM><security><authEncryption>          <authentication>open</authentication><encryption>WEP</encryption>          <useOneX>false</useOneX></authEncryption><sharedKey>          <keyType>networkKey</keyType><protected>false</protected>          <keyMaterial>{1}</keyMaterial></sharedKey><keyIndex>0</keyIndex>          </security></MSM></WLANProfile>",       profileName, key);        Wlan.WlanSetProfile( clientHandle, 			InterfaceGuid, 			Wlan.WlanProfileFlags.AllUser, 			profileXml, 			null, 			true, 			IntPtr.Zero, 			out reasonCode);       if(reasonCode==Wlan.WlanReasonCode.Success)      {         //Connect!!!         ...      }      else      {         //Return usually 1168 – Error is on profile Xml or on key      }      break;      //WPA_PSK      case Wlan.DOT11_AUTH_ALGORITHM.DOT11_AUTH_ALGO_WPA_PSK:      profileXml = string.Format("<?xml version=\"1.0\" encoding=\"US-ASCII\"?>         <WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\">         <name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig>         <connectionType>ESS</connectionType><connectionMode>auto</connectionMode>         <autoSwitch>false</autoSwitch><MSM><security><authEncryption>         <authentication>WPAPSK</authentication><encryption>TKIP</encryption>         <useOneX>false</useOneX></authEncryption><sharedKey>         <keyType>passPhrase</keyType><protected>false</protected>         <keyMaterial>{1}</keyMaterial></sharedKey></security></MSM></WLANProfile>",          profileName, key);  		 Wlan.WlanSetProfile( clientHandle,                           InterfaceGuid,                           Wlan.WlanProfileFlags.AllUser,                           profileXml,                           null,                           true,                           IntPtr.Zero,                           out reasonCode);  		 if(reasonCode == Wlan.WlanReasonCode.Success)      {          //Connect!!!          ...      }      else      {         //Return usually 1168 – Error is on profile Xml or on key      }      break; }

　　

补充参考：http://stackoverflow.com/questions/6318575/connect-to-a-wireless-network-in-c-sharp

 

c# 如何使用wlanapi连接电脑到wifi


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