CC.Common/Utils.cs

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namespace CC.Common
{
    using System;
    using System.Web;
    using System.Text;
    using System.Web.Security;
    using System.Collections.Generic;
    using System.Text.RegularExpressions;
    using System.Security.Cryptography;
    using System.Data;
    using System.IO;
    using System.Collections;
    /// <summary>
    /// 工具类
    /// </summary>
    public class Utils
    {
        /// <summary>
        /// 全局变量
        /// </summary>
        private static System.Text.Encoding encoding = System.Text.Encoding.UTF8;
        /// <summary>
        /// 去除BR
        /// </summary>
        private static Regex RegexBr = new Regex(@"(\r\n)", RegexOptions.IgnoreCase);


        /// <summary>
        /// List转换成字符串
        /// </summary>
        /// <param name="T"></param>
        /// <returns></returns>
        private static string listToString(List<string> T)
        {
            return string.Join(",", T);
        }

        #region 编码与解码
        /// <summary>
        /// 返回16位的MD5加密结果
        /// </summary>
        public static string MD5_16(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return "";
            }
            return FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5").ToLower().Substring(8, 0x10);
        }
        /// <summary>
        /// 返回32位的MD5加密结果
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string MD5_32(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return "";
            }