ZLIB应用实例ZLIB应用实例

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Data;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using ComponentAce.Compression.Libs.zlib;

namespace Test.Compress
{
    /**//// <summary>
    /// Zlib压缩算法压缩应用类
  /// </summary>
    public class ZlibCompress
    {
        /**//// <summary>
        /// 拷贝复制流字节
        /// </summary>
        /// <param name="input"></param>
        /// <param name="output"></param>
        private static void CopyStream(Stream input, Stream output)
        {
            byte[] buffer = new byte[ZipConst.ZIP_BUFFER_SIZE];
            int len;
            while ((len = input.Read(buffer, 0, buffer.Length)) > 0)
            {
                output.Write(buffer, 0, len);
            }
            output.Flush();

        }

        /**//// <summary>
        /// 压缩文件
    /// </summary>
        /// <param name="FileName">被压缩文件名（必须输入绝对路径）</param>
        /// <param name="CompressedFileName">压缩后保存的文件名（必须输入绝对路径）</param>
        /// <returns></returns>
        public static bool CompressFile(string FileName, string CompressedFileName)
        {
            bool bResult = false;

            FileStream outFileStream = new FileStream(CompressedFileName, FileMode.Create);
            ZOutputStream outZStream = new ZOutputStream(outFileStream, zlibConst.Z_DEFAULT_COMPRESSION);
            FileStream inFileStream = new FileStream(FileName, FileMode.Open);
            try
            {
                CopyStream(inFileStream, outZStream);
                bResult = true;
            }
            catch
            {
                bResult = false;
            }
            finally
            {
                outZStream.Close();
                outFileStream.Close();
                inFileStream.Close();
            }