C# 文件的压缩与解压缩

需要引用 using ICSharpCode.SharpZipLib.Zip;

调用：CreateZipFile("文件路径","压缩路径")

 private static void CreateZipFile(string filesPath, string zipFilePath)
        {

            if (!Directory.Exists(filesPath))
            {
                MessageBox.Show("找不到 " + filesPath);
                return;
            }

            try
            {
                string[] filenames = Directory.GetFiles(filesPath);
                using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))
                {

                    s.SetLevel(9); // 压缩级别 0-9
                    //s.Password = "123"; //Zip压缩文件密码
                    byte[] buffer = new byte[4096]; //缓冲区大小
                    foreach (string file in filenames)
                    {
                        ZipEntry entry = new ZipEntry(Path.GetFileName(file));
                        entry.DateTime = DateTime.Now;
                        s.PutNextEntry(entry);
                        using (FileStream fs = File.OpenRead(file))
                        {
                            int sourceBytes;
                            do
                            {
                                sourceBytes = fs.Read(buffer, 0, buffer.Length);
                                s.Write(buffer, 0, sourceBytes);
                            } while (sourceBytes > 0);
                        }
                    }
                    s.Finish();
                    s.Close();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }
        }

调用 ： UnZipFile("压缩路径","文件路径")

private static void UnZipFile(string zipFilePath, string unZipFilePath)
        {
            if (!File.Exists(zipFilePath))
            {
                MessageBox.Show(zipFilePath + " 不存在！");
                return;
            }

            using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))
           
            {

                ZipEntry theEntry;
                string directoryName = Path.GetDirectoryName(unZipFilePath);
                // create directory
                if (directoryName.Length > 0)
                {
                    Directory.CreateDirectory(directoryName);
                }

                while ((theEntry = s.GetNextEntry()) != null)
                {
                    //string fileName = Path.GetFileName(theEntry.Name);
                    string fileName = Path.Combine(unZipFilePath,theEntry.Name);

                    if (fileName != String.Empty)
                    {
                        using (FileStream streamWriter = File.Create(fileName))
                        {

                            int size = 2048;
                            byte[] data = new byte[2048];
                            while (true)
                            {
                                size = s.Read(data, 0, data.Length);
                                if (size > 0)
                                {
                                    streamWriter.Write(data, 0, size);
                                }
                                else
                                {
                                    break;
                                }
                            }
                           
                            streamWriter.Close();
                        }
                    }
                }

                s.Close();
            }
        }

//-- 补充

C#使用ICSharpCode SharpZipLib 压缩 解压缩 可以压缩文件夹

 

解压缩代码：

using System;
using System.Collections.Generic;
using System.Text;
using ICSharpCode.SharpZipLib.Zip;
using System.IO;

namespace DRMEncryption
{
/// ;summary;
/// UnZip 类用于解压缩一个 zip 文件。
/// ;/summary;
public class UnZipDir
{

//解压缩以后的文件名和路径，压缩前的路径
public static Boolean UNZipFile(string FileToZip, string ZipedFile)
{
try
{
FastZip fastZip = new FastZip();
fastZip.ExtractZip(FileToZip, ZipedFile, "");
return true;
}
catch {
return false;
}

}
}
}



压缩文件代码：

using System;
using System.IO;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;


namespace DRMEncryption
{
public class ZipClass
{

public static Boolean ZipFile(string FileToZip, string ZipedFile)
{

try
{
FastZip fastZip = new FastZip();

bool recurse = true;

//压缩后的文件名，压缩目录 ，是否递归

fastZip.CreateZip(FileToZip, ZipedFile, recurse, "");
return true;
}
catch { return false; }

}

}
}




那个返回方法是用来另外一个页面判断解压是否成功用的，可以不要;

解压缩：UnZipDir.UNZipFile(文件名, 路径)；

压缩：ZipClass.ZipFile(文件名, 路径)；

http://hi.baidu.com/supplyair/blog/item/9f75072c55c498eb8a1399ad.html