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 ssid

        private 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();

                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, , (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 security

                Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList();

                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Hex

        public 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 = ; i < byStr.Length; i++)

            {

                sb.Append(Convert.ToString(byStr[i], ));

            }

            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, );

                    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 = ;

        public WlanClient.WlanInterface wlanInterface = null;

    }

}

Form1.cs

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", , HorizontalAlignment.Left); //一步添加

            this.wifiListOK.Columns.Add("wifiSSID", , HorizontalAlignment.Left); //一步添加

            this.wifiListOK.Columns.Add("加密方式", , HorizontalAlignment.Left); //一步添加

            this.wifiListOK.Columns.Add("信号强度", , 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 > )

            {

                ListView.SelectedIndexCollection c = wifiListOK.SelectedIndices;

                MessageBoxButtons messButton = MessageBoxButtons.OKCancel;

                DialogResult dr = MessageBox.Show("确定要连接" + wifiListOK.Items[c[]].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, , (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();

                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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