asp.net中c#获取本机IP地址实例代码

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

namespace CSharpTest
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write(new Program().GetHostInfo());
            Console.ReadLine();
        }
        //获取本地IPd等信息
        protected string GetHostInfo()  
        {
            StringBuilder hostInfo = new StringBuilder("");
            IPAddress[] ipHost = Dns.GetHostAddresses(Dns.GetHostName());
            hostInfo.Append("本机名：");
            hostInfo.Append(Dns.GetHostName());
            hostInfo.Append("rn");
            hostInfo.Append("IP 地址：");
            hostInfo.Append("rn");

            foreach (IPAddress address in ipHost)
            {
                hostInfo.Append(address.ToString());
                hostInfo.Append("rn");
            }

            return hostInfo.ToString();
        }
    }
}

public static IPAddress GetHostIP()
{
IPHostEntry ipe = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ip = ipe.AddressList[0];

return ip;
}
private String GetIPAddress()
{
String str;
String Result = "";
String hostName = Dns.GetHostName();
IPAddress[] myIP = Dns.GetHostAddresses(hostName);
foreach (IPAddress address in myIP)
{
str = address.ToString();
for (int i = 0; i < str.Length; i++)
{
if (str[i] >= '0' && str[i] <= '9' || str[i] == '.') Result = str;
}
}
return Result;
}

///

?//得到网关地址
private string GetGateway() 
{ 
    //网关地址
    string strGateway = "";
    //获取所有网卡
    NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
    //遍历数组
    foreach (var netWork in nics)
    {
        //单个网卡的IP对象
        IPInterfaceProperties ip = netWork.GetIPProperties();
        //获取该IP对象的网关
        GatewayIPAddressInformationCollection gateways = ip.GatewayAddresses;
        foreach(var gateWay in gateways)
        {
            //如果能够Ping通网关
            if(IsPingIP(gateWay.Address.ToString()))
            {
                //得到网关地址
                strGateway = gateWay.Address.ToString();
                //跳出循环
                break;
            }
        }
 
        //如果已经得到网关地址
        if (strGateway.Length > 0) 
        {
            //跳出循环
            break;
        }
    }
 
    //返回网关地址
    return strGateway;
}
　　

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