Ip转long判断
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse("");
long ip= ipaddress.Address;
a * 256 * 256 * 256 + b * 256 * 256 + c * 256 + d;
/// <summary>
/// 分割IP
/// </summary>
/// <param name="ipAddress">IP地址</param>
/// <returns></returns>
private long getIpNum(String ipAddress)
{
String[] ip = ipAddress.Split(new char[] { '.' });
long a = int.Parse(ip[0]);
long b = int.Parse(ip[1]);
long c = int.Parse(ip[2]);
long d = int.Parse(ip[3]);