C# 压缩文件夹及文件

来源：互联网发布：diy彩铃软件编辑：程序博客网时间：2024/05/19 18:40

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;

namespace Common
{
    public class ZipClass
    {
        #region ZipFileDictory
        /// <summary>
        /// 递归压缩文件夹方法
        /// </summary>
        /// <param name="FolderToZip"></param>
        /// <param name="s"></param>
        /// <param name="ParentFolderName"></param>
        private bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
        {
            bool res = true;
            string[] folders, filenames;
            ZipEntry entry = null;
            FileStream fs = null;
            Crc32 crc = new Crc32();
            try
            {
                //创建当前文件夹
                entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
                s.PutNextEntry(entry);
                s.Flush();
                //先压缩文件，再递归压缩文件夹
                filenames = Directory.GetFiles(FolderToZip);
                foreach (string file in filenames)
                {
                    //打开压缩文件
                    fs = File.OpenRead(file);

                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
                    entry.DateTime = DateTime.Now;
                    entry.Size = fs.Length;
                    fs.Close();
                    crc.Reset();
                    crc.Update(buffer);
                    entry.Crc = crc.Value;
                    s.PutNextEntry(entry);
                    s.Write(buffer, 0, buffer.Length);
                }
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    fs = null;
                }
                if (entry != null)
                    entry = null;
                GC.Collect();
                GC.Collect(1);
            }
            folders = Directory.GetDirectories(FolderToZip);
            foreach (string folder in folders)
            {
                if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
                    return false;
            }
            return res;
        }

#endregion

#region ZipFileDictory

        /// <summary>
        /// 压缩目录
        /// </summary>
        /// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>
        /// <param name="ZipedFile">压缩后的文件名，全路径格式</param>
        /// <returns></returns>
        private bool ZipFileDictory(string FolderToZip, string ZipedFile, string Password)
        {
            bool res;
            if (!Directory.Exists(FolderToZip))
                return false;
            ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
            s.SetLevel(6);
            if (!string.IsNullOrEmpty(Password.Trim()))
                s.Password = Password.Trim();
            res = ZipFileDictory(FolderToZip, s, "");
            s.Finish();
            s.Close();
            return res;
        }

#endregion

#region ZipFile

        /// <summary>
        /// 压缩文件
        /// </summary>
        /// <param name="FileToZip">要进行压缩的文件名</param>
        /// <param name="ZipedFile">压缩后生成的压缩文件名</param>
        /// <returns></returns>
        private bool ZipFile(string FileToZip, string ZipedFile, string Password)
        {
            //如果文件没有找到，则报错
            if (!File.Exists(FileToZip))
                throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
            //FileStream fs = null;
            FileStream ZipFile = null;
            ZipOutputStream ZipStream = null;
            ZipEntry ZipEntry = null;
            bool res = true;
            try
            {
                ZipFile = File.OpenRead(FileToZip);
                byte[] buffer = new byte[ZipFile.Length];
                ZipFile.Read(buffer, 0, buffer.Length);
                ZipFile.Close();
                ZipFile = File.Create(ZipedFile);
                ZipStream = new ZipOutputStream(ZipFile);
                if (!string.IsNullOrEmpty(Password.Trim()))
                    ZipStream.Password = Password.Trim();
                ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
                ZipStream.PutNextEntry(ZipEntry);
                ZipStream.SetLevel(6);
                ZipStream.Write(buffer, 0, buffer.Length);
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (ZipEntry != null)
                {
                    ZipEntry = null;
                }
                if (ZipStream != null)
                {
                    ZipStream.Finish();
                    ZipStream.Close();
                }
                if (ZipFile != null)
                {
                    ZipFile.Close();
                    ZipFile = null;
                }
                GC.Collect();
                GC.Collect(1);
            }

return res;
}

#endregion

#region Zip

        /// <summary>
        /// 压缩文件和文件夹
        /// </summary>
        /// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
        /// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
        /// <param name="Password">压缩密码</param>
        /// <returns></returns>
        public bool Zip(string FileToZip, string ZipedFile, string Password)
        {
            if (Directory.Exists(FileToZip))
            {
                return ZipFileDictory(FileToZip, ZipedFile, Password);
            }
            else if (File.Exists(FileToZip))
            {
                return ZipFile(FileToZip, ZipedFile, Password);
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 压缩文件和文件夹
        /// </summary>
        /// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
        /// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
        /// <returns></returns>
        public bool Zip(string FileToZip, string ZipedFile)
        {
            return Zip(FileToZip, ZipedFile, "");
        }

#endregion

}
}

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