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            int index = 0;
            int last = this.array.Length - 1;
            while (index <= last)
            {
                int mid = index + (last - index) / 2;

                IPAddressInfo info = this.array[mid];
                if (ip >= info.Start && ip <= info.End)
                {
                    return info.AreaCode;

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// FREE code from CODECENTRIX
// http://www.codecentrix.com/
// http://codecentrix.blogspot.com/
using System;
using System.Runtime.InteropServices;
using mshtml;


namespace CodecentrixSample
{

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public class XmlParser
    {
        private static Regex regex = new Regex("<(\\w+?)[ >]", RegexOptions.Compiled);

        public static T Parse<T>(string body,Encoding encoding) where T : class
        {
            Type type = typeof(T);
            string rootTagName = GetRootElement(body);

            XmlAttributes rootAttrs = new XmlAttributes();

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public static class EasyWebRequest
    {
        /// <summary>
        /// HttpWebRequest方式
        /// </summary>
        public enum HttpMethod { 
            GET, 
            POST
        };

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public static class EnCryptographyHelper
    {
        public static string MD5Encoding(byte[] content)
        {
            MD5 md5 = MD5.Create();
            byte[] bytes = md5.ComputeHash(content);

            return HexToString(bytes);
        }

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/// <summary>
    /// 
    /// </summary>
    public static class XmlUtils
    {
        /// <summary>
        /// MergeFiles to a single file
        /// </summary>
        /// <param name="files"></param>
        /// <param name="fileContentMergeFail"></param>

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public static class ClassLoader
    {
        public static List<T> Load<T>(string fileFullPath)
        {
            return Load<T>(new string[] { fileFullPath });
        }

        public static List<T> Load<T>(string path, string parttern)
        {
            string[] files = Directory.GetFiles(path, parttern);

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 /// <summary>
    ///
    /// </summary>
    public static class Log
    {
        private static ILog logger;

        static Log()
        {
            string log4NetConfigPath = AppDomain.CurrentDomain.BaseDirectory + "//Log4Net.config";

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public class RetryableExcuteQueue<T>
        where T : CommonContract
    {
        private Queue<ExuteItem> queue;

        public RetryableExcuteQueue()
        {
            this.queue = new Queue<ExuteItem>();
        }

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    /// <summary>
    /// </summary>
    /// <remarks>
    /// 原图路径
    /// <add key="SourcePath" value="D:\Temp\Image\P800"/>
    /// 压缩尺寸，多个尺寸“;”分隔
    /// <add key="Destination" value="340*255"/>
    /// <add key="Destination" value="340*255；640*480"/>
    /// 保存路径，多个路径“;”分隔
    /// <add key="NewSizePath" value="D:\Temp\Image\P340"/>