C#获取本机IP地址（ipv4）

1 string name = Dns.GetHostName();  
2 IPAddress[] ipadrlist = Dns.GetHostAddresses(name);  

1 string name = Dns.GetHostName();  
2 IPAddress[] ipadrlist = Dns.GetHostAddresses(name);  
3 foreach (IPAddress ipa in ipadrlist)  
4 {  
5             if (ipa.AddressFamily == AddressFamily.InterNetwork)  
6             Console.Writeline(ipa.ToString());  
7 }  

  1 /// <summary>  
  2   /// 获取当前使用的IP  
  3   /// </summary>  
  4   /// <returns></returns>  
  5   public static string GetLocalIP()  
  6   {  
  7       string result = RunApp("route", "print",true);  
  8       Match m = Regex.Match(result, @"0.0.0.0s+0.0.0.0s+(d+.d+.d+.d+)s+(d+.d+.d+.d+)");  
  9       if (m.Success)  
 10       {  
 11           return m.Groups[2].Value;  
 12       }  
 13       else  
 14       {  
 15           try  
 16           {  
 17               System.Net.Sockets.TcpClient c = new System.Net.Sockets.TcpClient();  
 18               c.Connect("www.baidu.com", 80);  
 19               string ip = ((System.Net.IPEndPoint)c.Client.LocalEndPoint).Address.ToString();  
 20               c.Close();  
 21               return ip;  
 22           }  
 23           catch (Exception)  
 24           {  
 25               return null;  
 26           }  
 27       }  
 28   }  
 29   
 30   /// <summary>  
 31   /// 获取本机主DNS  
 32   /// </summary>  
 33   /// <returns></returns>  
 34   public static string GetPrimaryDNS()  
 35   {  
 36       string result = RunApp("nslookup", "",true);  
 37       Match m = Regex.Match(result, @"d+.d+.d+.d+");  
 38       if (m.Success)  
 39       {  
 40           return m.Value;  
 41       }  
 42       else  
 43       {  
 44           return null;  
 45       }  
 46   }  
 47   
 48   /// <summary>  
 49   /// 运行一个控制台程序并返回其输出参数。  
 50   /// </summary>  
 51   /// <param name="filename">程序名</param>  
 52   /// <param name="arguments">输入参数</param>  
 53   /// <returns></returns>  
 54   public static string RunApp(string filename, string arguments,bool recordLog)  
 55   {  
 56       try  
 57       {  
 58           if (recordLog)  
 59           {  
 60               Trace.WriteLine(filename + " " + arguments);  
 61           }  
 62           Process proc = new Process();  
 63           proc.StartInfo.FileName = filename;  
 64           proc.StartInfo.CreateNoWindow = true;  
 65           proc.StartInfo.Arguments = arguments;  
 66           proc.StartInfo.RedirectStandardOutput = true;  
 67           proc.StartInfo.UseShellExecute = false;  
 68           proc.Start();  
 69   
 70           using (System.IO.StreamReader sr = new System.IO.StreamReader(proc.StandardOutput.BaseStream, Encoding.Default))  
 71           {  
 72               //string txt = sr.ReadToEnd();  
 73               //sr.Close();  
 74               //if (recordLog)  
 75               //{  
 76               //    Trace.WriteLine(txt);  
 77               //}  
 78               //if (!proc.HasExited)  
 79               //{  
 80               //    proc.Kill();  
 81               //}  
 82               //上面标记的是原文，下面是我自己调试错误后自行修改的  
 83               Thread.Sleep(100);           //貌似调用系统的nslookup还未返回数据或者数据未编码完成，程序就已经跳过直接执行  
 84                                            //txt = sr.ReadToEnd()了，导致返回的数据为空，故睡眠令硬件反应  
 85               if (!proc.HasExited)         //在无参数调用nslookup后，可以继续输入命令继续操作，如果进程未停止就直接执行  
 86               {                            //txt = sr.ReadToEnd()程序就在等待输入，而且又无法输入，直接掐住无法继续运行  
 87                   proc.Kill();  
 88               }  
 89               string txt = sr.ReadToEnd();  
 90               sr.Close();  
 91               if (recordLog)  
 92                   Trace.WriteLine(txt);  
 93               return txt;  
 94           }  
 95       }  
 96       catch (Exception ex)  
 97       {  
 98           Trace.WriteLine(ex);  
 99           return ex.Message;  
100       }  
101   }  

 1 private void GetIP()    
 2     {    
 3         Process cmd = new Process();    
 4         cmd.StartInfo.FileName = "ipconfig.exe";//设置程序名     
 5         cmd.StartInfo.Arguments = "/all";  //参数     
 6  //重定向标准输出     
 7         cmd.StartInfo.RedirectStandardOutput = true;    
 8         cmd.StartInfo.RedirectStandardInput = true;    
 9         cmd.StartInfo.UseShellExecute = false;    
10         cmd.StartInfo.CreateNoWindow = true;//不显示窗口（控制台程序是黑屏）     
11  //cmd.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;//暂时不明白什么意思     
12         /*  
13  收集一下 有备无患  
14         关于:ProcessWindowStyle.Hidden隐藏后如何再显示？  
15         hwndWin32Host = Win32Native.FindWindow(null, win32Exinfo.windowsName);  
16         Win32Native.ShowWindow(hwndWin32Host, 1);     //先FindWindow找到窗口后再ShowWindow  
17         */    
18         cmd.Start();    
19         string info = cmd.StandardOutput.ReadToEnd();    
20         cmd.WaitForExit();    
21         cmd.Close();    
22         textBox1.AppendText(info);    
23     }