C#获取本机IP搜集整理几种方法

1、//GetHostName
private void GetIP()  
 {  
     string hostName = Dns.GetHostName();//本机名   
     //System.Net.IPAddress[] addressList = Dns.GetHostByName(hostName).AddressList;//会警告GetHostByName()已过期，我运行时且只返回了一个IPv4的地址   
     System.Net.IPAddress[] addressList = Dns.GetHostAddresses(hostName);//会返回所有地址，包括IPv4和IPv6   
     foreach (IPAddress ip in addressList)  
     {  
         listBox1.Items.Add(ip.ToString());  
     }  
 }

2、使用IPHostEntry获取本机局域网地址

static string GetLocalIp()  
         {  
             string hostname = Dns.GetHostName();//得到本机名   
             //IPHostEntry localhost = Dns.GetHostByName(hostname);//方法已过期，只得到IPv4的地址   
	     IPHostEntry localhost = Dns.GetHostEntry(hostname);  
             IPAddress localaddr = localhost.AddressList[0];  
             return localaddr.ToString();  
         }

3、获取本机网络ip地址

string strUrl = "提供IP查询的网站的链接";  
        Uri uri = new Uri(strUrl);  
        WebRequest webreq = WebRequest.Create(uri);  
        Stream s = webreq .GetResponse().GetResponseStream();  
        StreamReader sr = new StreamReader(s, Encoding.Default);  
        string all = sr.ReadToEnd();   
        int i = all.IndexOf("[") + 1;  
        //分析字符串得到IP   
        return ip;  
        /* 
         我用的是http://www.ip.cn/getip.php?action=getip&ip_url=&from=web    
         (这种链接很容易找的，百度“IP”得到一些网站，分析一下网站的链接就能得到) 
         返回的数据是：  
         <div class="well"><p>当前 IP：<code>0.0.0.0</code> 来自：XX省XX市 电信</p><p>GeoIP: Beijing, China</p></div>  
         解析这段就行  
       */

4、//由于用到了ManagementClass、ManagementObjectCollection；必须添加引用System.Management.dll及using System.Management;

private void GetIP2()  
         {  
             string stringMAC = "";  
             string stringIP = "";  
             ManagementClass managementClass = new ManagementClass("Win32_NetworkAdapterConfiguration");  
             ManagementObjectCollection managementObjectCollection = managementClass.GetInstances();  
             foreach(ManagementObject managementObject in managementObjectCollection)  
             {  
                 if ((bool)managementObject["IPEnabled"] == true)  
                 {  
                     stringMAC += managementObject["MACAddress"].ToString();  
                     string[] IPAddresses = (string[])managementObject["IPAddress"];  
                     if (IPAddresses.Length > 0)  
                     {  
                         stringIP = IPAddresses[0];   
                     }  
                 }  
             }  
             txtMAC.Text = stringMAC.ToString();  
             txtIP.Text = stringIP.ToString();  
         }

5、通过获取CMD里ipconfig命令的结果来得到IP     

private void GetIP6()  
    {  
        Process cmd = new Process();  
        cmd.StartInfo.FileName = "ipconfig.exe";//设置程序名   
        cmd.StartInfo.Arguments = "/all";  //参数   
 	//重定向标准输出   
        cmd.StartInfo.RedirectStandardOutput = true;  
        cmd.StartInfo.RedirectStandardInput = true;  
        cmd.StartInfo.UseShellExecute = false;  
        cmd.StartInfo.CreateNoWindow = true;//不显示窗口（控制台程序是黑屏）   
	//cmd.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;//暂时不明白什么意思   
        /* 
 	收集一下 有备无患 
        关于:ProcessWindowStyle.Hidden隐藏后如何再显示？ 
        hwndWin32Host = Win32Native.FindWindow(null, win32Exinfo.windowsName); 
        Win32Native.ShowWindow(hwndWin32Host, 1);     //先FindWindow找到窗口后再ShowWindow 
        */  
        cmd.Start();  
        string info = cmd.StandardOutput.ReadToEnd();  
        cmd.WaitForExit();  
        cmd.Close();  
        textBox1.AppendText(info);  
    }

6、NetworkInformation 

private void GetIP5()  
        {  
     //需要的命名空间   
            //using System.Net.NetworkInformation;   
            //using System.Net.Sockets;   
            string str = "";  
            NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();  
            int i = 0;  
            foreach (NetworkInterface adapter in adapters)  
            {  
   
                IPInterfaceProperties adapterProperties = adapter.GetIPProperties();  
                UnicastIPAddressInformationCollection allAddress =  
                                                                                        adapterProperties.UnicastAddresses;  
                if (allAddress.Count > 0)  
                {  
                    str += "interface   " + i + "description:\n\t " + adapter.Description + "\n ";  
                    i++;  
                    foreach (UnicastIPAddressInformation addr in allAddress)  
                    {  
                        if (addr.Address.AddressFamily == AddressFamily.InterNetworkV6)  
                        {  
                            ipListComb.Items.Add(addr.Address);  
                        }  
                        if (addr.Address.AddressFamily == AddressFamily.InterNetwork)  
                        {  
                            comboBox1.Items.Add(addr.Address);  
                        }  
   
                    }  
                }  
            }  
            MessageBox.Show(str);  
        }