获取电脑IP和MAC

using System.Web;

using System.Diagnostics;

using System.Text.RegularExpressions;

需要System.Web.dll

/// <summary>
/// 取得用户客户端IP(穿过代理服务器取远程用户真实IP地址)
/// </summary>
public static string GetClientIP()
{

     //如果使用代理，获取真实IP   
     string userip = string.Empty;
     if (HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != "")
     {
          userip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
     }
     else
     {
          userip = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
     }
     if (userip == null || userip == "")
     {
          userip = HttpContext.Current.Request.UserHostAddress;
     }
     return userip; 

     //HttpRequest Request = HttpContext.Current.Request;
     //try
     //{
     //    if (HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)
     //    {
     //        return HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
     //    }
     //    else
     //    {
     //        return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
     //    }
     //}
     //catch { return "127.0.0.1"; }
     }
     //获取mac地址
    public static string GetCustomerMac()
     {
          string IP = GetClientIP();
          string dirResults = "";
          ProcessStartInfo psi = new ProcessStartInfo();
          Process proc = new Process();
          psi.FileName = "nbtstat";
          psi.RedirectStandardInput = false;
          psi.RedirectStandardOutput = true;
          psi.Arguments = "-a " + IP;
          psi.UseShellExecute = false;
          proc = Process.Start(psi);
          dirResults = proc.StandardOutput.ReadToEnd();
          proc.WaitForExit();

          //匹配mac地址
       Match m = Regex.Match(dirResults, "\\w+\\-\\w+\\-\\w+\\-\\w+\\-\\w+\\-\\w\\w");

          //若匹配成功则返回mac，否则返回找不到主机信息
       if (m.ToString() != "")
          {
               return m.ToString();
          }
          else
          {
               return "找不到主机信息";
          }
     }