Common/ReadIPAddress.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;

/// <summary>
/// 读取IP地址
/// </summary>
public class ReadIPAddress
{

    static private string _dataPath = System.Web.HttpContext.Current.Server.MapPath("~/QQDataBase/QQ.Dat");
    static private string country;
    static private string local;
    static private long firstStartIp = 0;
    static private long lastStartIp = 0;
    static private FileStream objfs = null;
    static private long startIp = 0;
    static private long endIp = 0;
    static private int countryFlag = 0;
    static private long endIpOff = 0;

    #region 搜索匹配数据

    private static byte[] IPLib;

    private static byte[] GetIPLib()
    {
        if (IPLib == null)
        {
            IPLib = ReadData();
        }

        return IPLib;

    }

    private static byte[] ReadData()
    {
        objfs = new FileStream(_dataPath, FileMode.Open, FileAccess.Read);


        int count = (int)objfs.Length;

        byte[] lib = new byte[objfs.Length];
        objfs.Read(lib, 0, count);

        objfs.Close();


        return lib;
    }

    private static byte[] GetSome(long start, long length)
    {
        byte[] some = new byte[length];

        for (long i = start; i < start + length; i++)
        {