遍历IP段,返回活动 IP 列表

小Lee闲暇时间钻牛角尖,写了一个不操作IP字符串的遍历IP段并返回活动IP列表的方法,闲话就不说了,直接贴CODE

 

 

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Diagnostics;

namespace Test2._0
{
    class IPhost
    {
        public IPhost()
        { 
        }

        /// <summary>
        /// 获取IP段中的活动IP列表
        /// </summary>
        /// <param name="startIP">开始IP</param>
        /// <param name="endIP">结束IP</param>
        /// <returns></returns>
        public List<IPAddress> GetLiveIP(IPAddress startIP, IPAddress endIP)
        {
            List<IPAddress> ipList = new List<IPAddress>();
            IPAddress currentIP = new IPAddress(startIP.Address);
            currentIP = startIP;
            while (currentIP.Address <= endIP.Address)
            {
                if (getIpState(currentIP) == "连接")
                {
                    ipList.Add(currentIP);
                }
                currentIP = NextIP(currentIP);
            }
            return ipList;
        }


        /// <summary>
        /// 从一个IPAddress 获取它的下一个 IPAddress
        /// </summary>
        /// <param name="theIP">IPAddress</param>
        /// <returns></returns>
        public IPAddress NextIP(IPAddress theIP)
        {
            uint startuint = (uint)IPAddress.NetworkToHostOrder((int)theIP.Address);

            long NetWorklong = (long)IPAddress.HostToNetworkOrder((int)(startuint + 1));

            return new IPAddress(NetWorklong);
        }

        /// <summary>
        /// 判断IP是否活动
        /// </summary>
        /// <param name="theIP"></param>
        /// <returns></returns>
        public bool IpIsLive(IPAddress theIP)
        {
            System.Net.NetworkInformation.Ping pi = new System.Net.NetworkInformation.Ping();
            System.Net.NetworkInformation.PingReply pr = pi.Send(theIP);
            if ((pr.Status & System.Net.NetworkInformation.IPStatus.Success) == System.Net.NetworkInformation.IPStatus.Success)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 用cmd 判断IP状态 (古老的方法,放着纪念)
        /// </summary>
        /// <param name="theIP"></param>
        /// <returns></returns>
        public string getIpState(IPAddress theIP)
        {
            Process pcs = new Process();
            pcs.StartInfo.FileName = "cmd.exe";
            pcs.StartInfo.UseShellExecute = false;
            pcs.StartInfo.RedirectStandardInput = true;
            pcs.StartInfo.RedirectStandardOutput = true;
            pcs.StartInfo.RedirectStandardError = true;
            pcs.StartInfo.CreateNoWindow = true;

            string pingStr;
            pcs.Start();
            pcs.StandardInput.WriteLine("ping -n 1 " + theIP.ToString());
            pcs.StandardInput.WriteLine("exit");
            string strRst = pcs.StandardOutput.ReadToEnd();

            if (strRst.IndexOf("(0% loss)") != -1)
                pingStr = "连接";
            else if (strRst.IndexOf("Destination host unreachable.") != -1)
                pingStr = "无法到达目的主机";
            else if (strRst.IndexOf("Request timed out.") != -1)
                pingStr = "超时";
            else if (strRst.IndexOf("Unknown host") != -1)
                pingStr = "无法解析主机";
            else
                pingStr = strRst;
            pcs.Close();
            return pingStr;
        }
    }
}