首页 > 代码库 > c# 如何使用wlanapi连接电脑到wifi
c# 如何使用wlanapi连接电脑到wifi
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