http://www.icsharpcode.net/opensource/sharpziplib/ 有SharpZiplib的最新版本，本文使用的版本為0.86.0.518，支持Zip, GZip, BZip2 和Tar格式
我們需要dll 在官網上也有，也可以從百度網盤下載
好了，深入的大家還要多多研究，今天我們簡單介紹一下 簡單的 單文件、文件夾的壓縮和解壓
我們新建個幫助類 ZipHelper.cs 然後 添加 dll 引用
using ICSharpCode.SharpZipLib.Checksums; using ICSharpCode.SharpZipLib.Zip; using System;4 using System.IO;
這裡我添加了幾個參數 大家可以根據自己的需要 修改一下
/// <summary>
/// ZIP:壓縮單個文件
/// add yuangang by 2016-06-13
/// </summary>
/// <param name="FileToZip">需要壓縮的文件（絕對路徑）</param>
/// <param name="ZipedPath">壓縮後的文件路徑（絕對路徑）</param>
/// <param name="ZipedFileName">壓縮後的文件名稱（文件名，默認 同源文件同名）</param>
/// <param name="CompressionLevel">壓縮等級（0 無 - 9 最高，默認 5）</param>
/// <param name="BlockSize">緩存大小（每次寫入文件大小，默認 2048）</param>
/// <param name="IsEncrypt">是否加密（默認 加密）</param>
public static void ZipFile(string FileToZip, string ZipedPath, string ZipedFileName = "", int CompressionLevel = 5, int BlockSize = 2048, bool IsEncrypt = true)
{
//如果文件沒有找到，則報錯
if (!System.IO.File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("指定要壓縮的文件: " + FileToZip + " 不存在!");
}
//文件名稱（默認同源文件名稱相同）
string ZipFileName = string.IsNullOrEmpty(ZipedFileName) ? ZipedPath + "\\" + new FileInfo(FileToZip).Name.Substring(0, new FileInfo(FileToZip).Name.LastIndexOf('.')) + ".zip" : ZipedPath + "\\" + ZipedFileName + ".zip";
using (System.IO.FileStream ZipFile = System.IO.File.Create(ZipFileName))
{
using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile))
{
using (System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read))
{
string fileName = FileToZip.Substring(FileToZip.LastIndexOf("\\") + 1);
ZipEntry ZipEntry = new ZipEntry(fileName);
if (IsEncrypt)
{
//壓縮文件加密
ZipStream.Password = “123”;
}
ZipStream.PutNextEntry(ZipEntry);
//設置壓縮級別
ZipStream.SetLevel(CompressionLevel);
//緩存大小
byte[] buffer = new byte[BlockSize];
int sizeRead = 0;
try
{
do
{
sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
ZipStream.Write(buffer, 0, sizeRead);
}
while (sizeRead > 0);
}
catch (System.Exception ex)
{
throw ex;
}
StreamToZip.Close();
}
ZipStream.Finish();
ZipStream.Close();
}
ZipFile.Close();
}
}
/// <summary>
/// ZIP：壓縮文件夾
/// add yuangang by 2016-06-13
/// </summary>
/// <param name="DirectoryToZip">需要壓縮的文件夾（絕對路徑）</param>
/// <param name="ZipedPath">壓縮後的文件路徑（絕對路徑）</param>
/// <param name="ZipedFileName">壓縮後的文件名稱（文件名，默認 同源文件夾同名）</param>
/// <param name="IsEncrypt">是否加密（默認 加密）</param>
public static void ZipDirectory(string DirectoryToZip, string ZipedPath, string ZipedFileName = "", bool IsEncrypt = true)
{
//如果目錄不存在，則報錯
if (!System.IO.Directory.Exists(DirectoryToZip))
{
throw new System.IO.FileNotFoundException("指定的目錄: " + DirectoryToZip + " 不存在!");
}
//文件名稱（默認同源文件名稱相同）
string ZipFileName = string.IsNullOrEmpty(ZipedFileName) ? ZipedPath + "\\" + new DirectoryInfo(DirectoryToZip).Name + ".zip" : ZipedPath + "\\" + ZipedFileName + ".zip";
using (System.IO.FileStream ZipFile = System.IO.File.Create(ZipFileName))
{
using (ZipOutputStream s = new ZipOutputStream(ZipFile))
{
if (IsEncrypt)
{
//壓縮文件加密
s.Password = “123”;
}
ZipSetp(DirectoryToZip, s, "");
}
}
}
/// <summary>
/// 遞歸遍歷目錄
/// add yuangang by 2016-06-13
/// </summary>
private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath)
{
if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar)
{
strDirectory += Path.DirectorySeparatorChar;
}
Crc32 crc = new Crc32();
string[] filenames = Directory.GetFileSystemEntries(strDirectory);
foreach (string file in filenames)// 遍歷所有的文件和目錄
{
if (Directory.Exists(file))// 先當作目錄處理如果存在這個目錄就遞歸Copy該目錄下面的文件
{
string pPath = parentPath;
pPath += file.Substring(file.LastIndexOf("\\") + 1);
pPath += "\\";
ZipSetp(file, s, pPath);
}
else // 否則直接壓縮文件
{
//打開壓縮文件
using (FileStream fs = File.OpenRead(file))
{
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1);
ZipEntry entry = new ZipEntry(fileName);
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);
}
}
}
}
/// <summary>
/// ZIP:解壓一個zip文件
/// add yuangang by 2016-06-13
/// </summary>
/// <param name="ZipFile">需要解壓的Zip文件（絕對路徑）</param>
/// <param name="TargetDirectory">解壓到的目錄</param>
/// <param name="Password">解壓密碼</param>
/// <param name="OverWrite">是否覆蓋已存在的文件</param>
public static void UnZip(string ZipFile, string TargetDirectory, string Password, bool OverWrite = true)
{
//如果解壓到的目錄不存在，則報錯
if (!System.IO.Directory.Exists(TargetDirectory))
{
throw new System.IO.FileNotFoundException("指定的目錄: " + TargetDirectory + " 不存在!");
}
//目錄結尾
if (!TargetDirectory.EndsWith("\\")) { TargetDirectory = TargetDirectory + "\\"; }
using (ZipInputStream zipfiles = new ZipInputStream(File.OpenRead(ZipFile)))
{
zipfiles.Password = Password;
ZipEntry theEntry;
while ((theEntry = zipfiles.GetNextEntry()) != null)
{
string directoryName = "";
string pathToZip = "";
pathToZip = theEntry.Name;
if (pathToZip != "")
directoryName = Path.GetDirectoryName(pathToZip) + "\\";
string fileName = Path.GetFileName(pathToZip);
Directory.CreateDirectory(TargetDirectory + directoryName);
if (fileName != "")
{
if ((File.Exists(TargetDirectory + directoryName + fileName) && OverWrite) || (!File.Exists(TargetDirectory + directoryName + fileName)))
{
using (FileStream streamWriter = File.Create(TargetDirectory + directoryName + fileName))
{
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = zipfiles.Read(data, 0, data.Length);
if (size > 0)
streamWriter.Write(data, 0, size);
else
break;
}
streamWriter.Close();
}
}
}
}
zipfiles.Close();
}
}
