特别声明，本文转自：https://www.cnblogs.com/ywf520/p/6502452.html

1、功能搜索WIFI并连接

2、所用工具及资源：VS2012　Managed Wifi API（即：引用ManagedWifi.dll文件地址：http://files.cnblogs.com/files/ywf520/ManagedWifi.zip）

3、运行截图及工程截图：

工程目录结构

4、具体代码实现

wifiSo.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NativeWifi; namespace WifiConnect
{class wifiSo{private WIFISSID ssid;               //wifi ssidprivate string key;                 //wifi密码public List<WIFISSID> ssids = new List<WIFISSID>();public wifiSo(){ssids.Clear();}public wifiSo(WIFISSID ssid, string key)  {ssids.Clear();this.ssid = ssid;this.key = key;}//寻找当前连接的网络：public static string GetCurrentConnection(){WlanClient client = new WlanClient();foreach (WlanClient.WlanInterface wlanIface in client.Interfaces){Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList(0);foreach (Wlan.WlanAvailableNetwork network in networks){if (wlanIface.InterfaceState == Wlan.WlanInterfaceState.Connected && wlanIface.CurrentConnection.isState == Wlan.WlanInterfaceState.Connected){return wlanIface.CurrentConnection.profileName;}}}return string.Empty;}static string GetStringForSSID(Wlan.Dot11Ssid ssid){return Encoding.UTF8.GetString(ssid.SSID, 0, (int)ssid.SSIDLength);}/// <summary>/// 枚举所有无线设备接收到的SSID/// </summary>public void ScanSSID(){WlanClient client = new WlanClient();foreach (WlanClient.WlanInterface wlanIface in client.Interfaces){// Lists all networks with WEP securityWlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList(0);foreach (Wlan.WlanAvailableNetwork network in networks){WIFISSID targetSSID = new WIFISSID();targetSSID.wlanInterface = wlanIface;targetSSID.wlanSignalQuality = (int)network.wlanSignalQuality;targetSSID.SSID = GetStringForSSID(network.dot11Ssid);//targetSSID.SSID = Encoding.Default.GetString(network.dot11Ssid.SSID, 0, (int)network.dot11Ssid.SSIDLength);targetSSID.dot11DefaultAuthAlgorithm = network.dot11DefaultAuthAlgorithm.ToString();targetSSID.dot11DefaultCipherAlgorithm = network.dot11DefaultCipherAlgorithm.ToString();ssids.Add(targetSSID);}}} // 字符串转Hexpublic static string StringToHex(string str){StringBuilder sb = new StringBuilder();byte[] byStr = System.Text.Encoding.Default.GetBytes(str); //默认是System.Text.Encoding.Default.GetBytes(str)for (int i = 0; i < byStr.Length; i++){sb.Append(Convert.ToString(byStr[i], 16));}return (sb.ToString().ToUpper());}// 连接到无线网络public void ConnectToSSID(){try{String auth = string.Empty;String cipher = string.Empty;bool isNoKey = false;String keytype = string.Empty;//Console.WriteLine("》》》《《" + ssid.dot11DefaultAuthAlgorithm + "》》对比《《" + "Wlan.Dot11AuthAlgorithm.RSNA_PSK》》");switch (ssid.dot11DefaultAuthAlgorithm){case "IEEE80211_Open":auth = "open"; break;case "RSNA":auth = "WPA2PSK"; break;case "RSNA_PSK"://Console.WriteLine("电子设计wifi：》》》");auth = "WPA2PSK"; break;case "WPA":auth = "WPAPSK"; break;case "WPA_None":auth = "WPAPSK"; break;case "WPA_PSK":auth = "WPAPSK"; break;}switch (ssid.dot11DefaultCipherAlgorithm){case "CCMP":cipher = "AES";keytype = "passPhrase";break;case "TKIP":cipher = "TKIP";keytype = "passPhrase";break;case "None":cipher = "none"; keytype = "";isNoKey = true;break;case "WWEP":cipher = "WEP";keytype = "networkKey";break;case "WEP40":cipher = "WEP";keytype = "networkKey";break;case "WEP104":cipher = "WEP";keytype = "networkKey";break;}if (isNoKey && !string.IsNullOrEmpty(key)){Console.WriteLine(">>>>>>>>>>>>>>>>>无法连接网络！");return;}else if (!isNoKey && string.IsNullOrEmpty(key)){Console.WriteLine("无法连接网络！");return;}else{//string profileName = ssid.profileNames; // this is also the SSID string profileName = ssid.SSID;string mac = StringToHex(profileName);string profileXml = string.Empty;if (!string.IsNullOrEmpty(key)){profileXml = string.Format("<?xml version=\"1.0\"?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><hex>{1}</hex><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><autoSwitch>false</autoSwitch><MSM><security><authEncryption><authentication>{2}</authentication><encryption>{3}</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>{4}</keyType><protected>false</protected><keyMaterial>{5}</keyMaterial></sharedKey><keyIndex>0</keyIndex></security></MSM></WLANProfile>",profileName, mac, auth, cipher, keytype, key);}else{profileXml = string.Format("<?xml version=\"1.0\"?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><hex>{1}</hex><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><autoSwitch>false</autoSwitch><MSM><security><authEncryption><authentication>{2}</authentication><encryption>{3}</encryption><useOneX>false</useOneX></authEncryption></security></MSM></WLANProfile>",profileName, mac, auth, cipher, keytype);}ssid.wlanInterface.SetProfile(Wlan.WlanProfileFlags.AllUser, profileXml, true);bool success = ssid.wlanInterface.ConnectSynchronously(Wlan.WlanConnectionMode.Profile, Wlan.Dot11BssType.Any, profileName, 15000);if (!success){Console.WriteLine("连接网络失败！");return;}}}catch (Exception e){Console.WriteLine("连接网络失败！");return;}}//当连接的连接状态进行通知 面是简单的通知事件的实现，根据通知的内容在界面上显示提示信息：private void WlanInterface_WlanConnectionNotification(Wlan.WlanNotificationData notifyData, Wlan.WlanConnectionNotificationData connNotifyData){try{if (notifyData.notificationSource == Wlan.WlanNotificationSource.ACM){int notificationCode = (int)notifyData.NotificationCode;switch (notificationCode){case (int)Wlan.WlanNotificationCodeAcm.ConnectionStart:Console.WriteLine("开始连接无线网络.......");break;case (int)Wlan.WlanNotificationCodeAcm.ConnectionComplete:break;case (int)Wlan.WlanNotificationCodeAcm.Disconnecting:Console.WriteLine("正在断开无线网络连接.......");break;case (int)Wlan.WlanNotificationCodeAcm.Disconnected:Console.WriteLine("已经断开无线网络连接.......");break;}}//}));}catch (Exception e){//Loger.WriteLog(e.Message);}}}class WIFISSID{public string SSID = "NONE";public string dot11DefaultAuthAlgorithm = "";public string dot11DefaultCipherAlgorithm = "";public bool networkConnectable = true;public string wlanNotConnectableReason = "";public int wlanSignalQuality = 0;public WlanClient.WlanInterface wlanInterface = null;}
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using NativeWifi;
using System.Threading;
namespace WifiConnect
{
public partial class wifi : Form
{
private List<WIFISSID> ssids;
private wifiSo wifiso;
public wifi()
{
InitializeComponent();
}

private void wifi_Load(object sender, EventArgs e)
{

wifiso = new wifiSo(); //加载wifi
ssids = wifiso.ssids;
wifiso.ScanSSID(); //显示所有wifi

}
private void connectWIFI()
{

}

private void button1_Click(object sender, EventArgs e)
{
this.wifiListOK.Items.Clear(); //只移除所有的项。
//wifiListOK.Clear();//清除listview中的数据
SetwifiList();
ScanSSID();
}

//设置listviewok
private void SetwifiList()
{
this.wifiListOK.Columns.Add("wifi名称", 160, HorizontalAlignment.Left); //一步添加
this.wifiListOK.Columns.Add("wifiSSID", 120, HorizontalAlignment.Left); //一步添加
this.wifiListOK.Columns.Add("加密方式", 100, HorizontalAlignment.Left); //一步添加
this.wifiListOK.Columns.Add("信号强度", 88, HorizontalAlignment.Left); //一步添加
//ColumnHeader ch = new ColumnHeader(); //先创建列表头
wifiListOK.GridLines = true;//显示网格
wifiListOK.Scrollable = true;//显示所有项时是否显示滚动条
wifiListOK.AllowColumnReorder = true;
wifiListOK.FullRowSelect = true;
wifiListOK.CheckBoxes = true;
}
//添加数据
private void wifiListOKADDitem(String wifiname, String pass,String dot11DefaultAuthAlgorithm,int i)
{
this.wifiListOK.BeginUpdate(); //数据更新，UI暂时挂起，直到EndUpdate绘制控件，可以有效避免闪烁并大大提高加载速度
//this.wifiListOK.Items.Add(wifiname,0);
ListViewItem wifiitem = wifiListOK.Items.Add(wifiname);

wifiitem.SubItems.Add(pass);
wifiitem.SubItems.Add(dot11DefaultAuthAlgorithm);
wifiitem.SubItems.Add(i+"");

this.wifiListOK.EndUpdate(); //结束数据处理，UI界面一次性绘制。
this.wifiListOK.View = System.Windows.Forms.View.Details;
}

//单击事件
private void wifiListOK_SelectedIndexChanged(object sender, EventArgs e)
{

if (wifiListOK.SelectedIndices != null && wifiListOK.SelectedItems.Count > 0)
{
ListView.SelectedIndexCollection c = wifiListOK.SelectedIndices;
MessageBoxButtons messButton = MessageBoxButtons.OKCancel;
DialogResult dr = MessageBox.Show("确定要连接" + wifiListOK.Items[c[0]].Text + "吗?", "wifi连接", messButton);
if (dr == DialogResult.OK)//如果点击“确定”按钮
{
// Console.WriteLine("<<<<<<<<<<<<<<<<flags:{0}.>>>>>>>>>>>>>>>>>>>>>>>", ssid);
//wifiso.ConnectToSSID(targetSSID, "ZMZGZS520");//连接wifi
}
}
}
static string GetStringForSSID(Wlan.Dot11Ssid ssid)
{
return Encoding.UTF8.GetString(ssid.SSID, 0, (int)ssid.SSIDLength);
}
//显示所有wifi
public void ScanSSID()
{
WlanClient client = new WlanClient();
foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
{
// Lists all networks with WEP security
Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList(0);
foreach (Wlan.WlanAvailableNetwork network in networks)
{
WIFISSID targetSSID = new WIFISSID();

targetSSID.wlanInterface = wlanIface;
targetSSID.wlanSignalQuality = (int)network.wlanSignalQuality;
targetSSID.SSID = GetStringForSSID(network.dot11Ssid);
//targetSSID.SSID = Encoding.Default.GetString(network.dot11Ssid.SSID, 0, (int)network.dot11Ssid.SSIDLength);
targetSSID.dot11DefaultAuthAlgorithm = network.dot11DefaultAuthAlgorithm.ToString();
targetSSID.dot11DefaultCipherAlgorithm = network.dot11DefaultCipherAlgorithm.ToString();
ssids.Add(targetSSID);
wifiListOKADDitem(GetStringForSSID(network.dot11Ssid), network.dot11DefaultCipherAlgorithm.ToString(),
network.dot11DefaultAuthAlgorithm.ToString(),(int)network.wlanSignalQuality);
if (GetStringForSSID(network.dot11Ssid).Equals("DZSJ1"))
{
var obj = new wifiSo(targetSSID, "ZMZGZS520");
Thread wificonnect = new Thread(obj.ConnectToSSID);
wificonnect.Start();
//wifiso.ConnectToSSID(targetSSID, "ZMZGZS520");//连接wifi
connectWifiOK.Text = GetStringForSSID(network.dot11Ssid);
Image img = new Bitmap(Environment.CurrentDirectory+"/image/wifi.png");//这里是你要替换的图片。当然你必须事先初始化出来图
pictureBoxW.BackgroundImage = img;
//Console.WriteLine(">>>>>>>>>>>>>>>>>开始连接网络！" + targetSSID.SSID + GetStringForSSID(network.dot11Ssid) + GetStringForSSID(network.dot11Ssid).Equals("DZSJ1"));
}

}
}
}
/// <summary>
/// 关闭wifi
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void closeWIFI_Click(object sender, EventArgs e)
{
if (connectWifiOK.Text.Equals("无") || connectWifiOK.Text.Equals(null))
{
MessageBox.Show("当前无连接wifi");
}
else
{

}
}
//更新数据
private void getwifidatabtn_Click(object sender, EventArgs e)
{
WifiSocket wifiscoket = new WifiSocket();
wifiscoket.fuwu();
wifiscoket.kehuduan();
}
}
}

5、到此就结束了，写的不对的地方希望大家多多指教，更多功能还希望小伙伴们继续研究。

6、鸣谢：感谢各位广大博友无私的分享精神！

7、参考：http://blog.csdn.net/m593192219/article/details/9363355

8、源代码：https://files.cnblogs.com/files/ywf520/ManagedWifi.zip

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C#WIFI搜索与连接

特别声明，本文转自：https://www.cnblogs.com/ywf520/p/6502452.html

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