关于IPAddress类的疑问

Question

//filename:ResolveDNSApp.cs
using System;
using System.Net;class ResolveDNS
{
        IPAdress[] m_arrayIPs;
        public void Resolve(string s_host)
        {
                IPHostEntry ip = DNS.GetHostByName(s_host);
                m_arrayIPs = ip.AddressList;
        }
        public IPAddress this[int nIndex]
        {
                get
                {
                        return m_arrayIPs[nIndex];
                }
        }
        public int IPLength
        {
                get
                {
                        return m_arrayIPs.Length;
                }
        }
}class ResolveDNSApp
{
        public static void Main()
        {
                ResolveDNS resolver = new ResolveDNS();
                resolver.Resolve(www.sohu.com);
                int n = resolver.IPLength;
                Console.WriteLine("Ger the IP Address of host:");
                Console.WriteLine();
                for(int i = 0; i < n; i++)
                {
                        Console.WriteLine(resolver[i]);
                }
        }
}我用csc命令提示：找不到类型或者命名空间名称“IPAdress”（是否缺少 using 指令或程序集引用）
CSDN文档指出IPAdress类在System.Net空间中啊
知道的人发句话！！！！
说一下是怎么回事，怎么解决啊！？？、

Answer 1

CSDN文档
-------------MSDN文档中也只有IPAddress而没有IPAdress

Answer 2

缺少这个.Management.dll
没时间给你传了，自己到网上找吧

Answer 3

已经解决，是少了个d，解决后的代码是
using System;
using System.Net;class ResolveDNS
{
        IPAddress[] m_arrayIPs;
        public void Resolve(string s_host)
        {
                IPHostEntry ip = Dns.GetHostByName(s_host);
                m_arrayIPs = ip.AddressList;
        }
        public IPAddress this[int nIndex]
        {
                get
                {
                        return m_arrayIPs[nIndex];
                }
        }
        public int IPLength
        {
                get
                {
                        return m_arrayIPs.Length;
                }
        }
}class ResolveDNSApp
{
        public static void Main()
        {
                ResolveDNS resolver = new ResolveDNS();
                resolver.Resolve("www.sohu.com");
                int n = resolver.IPLength;
                Console.WriteLine("Get the IP Address of host:");
                Console.WriteLine();
                for(int i = 0; i < n; i++)
                {
                        Console.WriteLine(resolver[i]);
                }
        }
}