ip地址

1.将IP地址转化为整形  
  System.Net.IPAddress   ip=   System.Net.IPAddress.Parse("192.168.1.2");  
  int   iplong   =(int)   ip.Address;  
   
  2.将整型变为IP地址  
    int   j=23543;  
  System.Net.IPAddress   ip1=   System.Net.IPAddress.Parse(j.ToString());  
  this.Label1.Text=ip1.ToString();  

//IP地址
            string Ip = "123.130.130.129";
            //取出IP地址去掉‘.’后的string数组
            string[] Ip_List = Ip.Split(".".ToCharArray());
            string X_Ip = "";
            //循环数组，把数据转换成十六进制数，并合并数组(3dafe81e)
            foreach (string ip in Ip_List)
            {
                X_Ip += Convert.ToInt16(ip).ToString("x");
            }

            //将十六进制数转换成十进制数(1034938398)
            long N_Ip = long.Parse(X_Ip, System.Globalization.NumberStyles.HexNumber);
            Response.Write(N_Ip.ToString());