【转】【C#】ZIP、RAR 压缩与解压缩
压缩文件夹 源码如下 using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.IO; using ICSharpCode.SharpZipLib.Checksums; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.GZip; /// /// ZipFloClass 的摘要说明 /// public class ZipFloClass { public void ZipFile(string strFile, string strZip) { if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar) strFile += Path.DirectorySeparatorChar; ZipOutputStream s = new ZipOutputStream(File.Create(strZip)); s.SetLevel(6); // 0 - store only to 9 - means best compression zip(strFile, s, strFile); s.Finish(); s.Close(); } private void zip(string strFile, ZipOutputStream s, string staticFile) { if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar) strFile += Path.DirectorySeparatorChar; Crc32 crc = new Crc32(); string[] filenames = Directory.GetFileSystemEntries(strFile); foreach (string file in filenames) { if (Directory.Exists(file)) { zip(file, s, staticFile); } else // 否则直接压缩文件 { //打开压缩文件 FileStream fs = File.OpenRead(file); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); string tempfile = file.Substring(staticFile.LastIndexOf("\\") + 1); ZipEntry entry = new ZipEntry(tempfile); 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); } } } } 解压文件夹 using System; using System.Data; using System.Web; using System.Text; using System.Collections; using System.IO; using System.Diagnostics; using System.Runtime.Serialization.Formatters.Binary; using ICSharpCode.SharpZipLib.BZip2; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.Zip.Compression; using ICSharpCode.SharpZipLib.Zip.Compression.Streams; using ICSharpCode.SharpZipLib.GZip; using ICSharpCode.SharpZipLib.Checksums; /// /// UnZipFloClass 的摘要说明 /// public class UnZipFloClass { public string unZipFile(string TargetFile, string fileDir) { string rootFile = " "; try { //读取压缩文件(zip文件),准备解压缩 ZipInputStream s = new ZipInputStream(File.OpenRead(TargetFile.Trim())); ZipEntry theEntry; string path = fileDir; //解压出来的文件保存的路径 string rootDir = " "; //根目录下的第一个子文件夹的名称 while ((theEntry = s.GetNextEntry()) != null) { rootDir = Path.GetDirectoryName(theEntry.Name); //得到根目录下的第一级子文件夹的名称 if (rootDir.IndexOf("\\") >= 0) { rootDir = rootDir.Substring(0, rootDir.IndexOf("\\") + 1); } string dir = Path.GetDirectoryName(theEntry.Name); //根目录下的第一级子文件夹的下的文件夹的名称 string fileName = Path.GetFileName(theEntry.Name); //根目录下的文件名称 if (dir != " " ) //创建根目录下的子文件夹,不限制级别 { if (!Directory.Exists(fileDir + "\\" + dir)) { path = fileDir + "\\" + dir; //在指定的路径创建文件夹 Directory.CreateDirectory(path); } } else if (dir == " " && fileName != "") //根目录下的文件 { path = fileDir; rootFile = fileName; } else if (dir != " " && fileName != "") //根目录下的第一级子文件夹下的文件 { if (dir.IndexOf("\\") > 0) //指定文件保存的路径 { path = fileDir + "\\" + dir; } } if (dir == rootDir) //判断是不是需要保存在根目录下的文件 { path = fileDir + "\\" + rootDir; } //以下为解压缩zip文件的基本步骤 //基本思路就是遍历压缩文件里的所有文件,创建一个相同的文件。 if (fileName != String.Empty) { FileStream streamWriter = File.Create(path + "\\" + 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(); return rootFile; } catch (Exception ex) { return "1; " + ex.Message; } } }
调用：
/// <summary> /// 压缩 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button1_Click(object sender, EventArgs e) { string[] FileProperties = new string[2]; FileProperties[0] = "D:\\Debug\\";//待压缩文件目录 //Debug2=>目录必须存在(可以改进程序) FileProperties[1] = "D:\\Debug2\\a.zip"; //压缩后的目标文件 ZipFloClass Zc = new ZipFloClass(); Zc.ZipFile(FileProperties[0], FileProperties[1]); } /// <summary> /// 解压 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button2_Click(object sender, EventArgs e) { string[] FileProperties = new string[2]; FileProperties[0] = "D:\\Debug2\\a.zip";//待解压的文件 //=>Debug3目录可以不用存在 FileProperties[1] = "D:\\Debug3\\";//解压后放置的目标目录 UnZipFloClass UnZc = new UnZipFloClass(); UnZc.unZipFile(FileProperties[0], FileProperties[1]); }
ICSharpCode.SharpZipLib.dll下载
原文地址：http://www.cnblogs.com/zfanlong1314/p/4202695.html
PS.补充RAR解压 2018-8-18
SharpCompress的C#框架被开源，您可以在搜索引擎中找到SharpCompress框架的开源代码，它支持：rar 7zip, zip, tar, tzip和bzip2格式的压缩和解压，下面的示例直接从rar格式文件读取并解压文件。
using (Stream stream = File.OpenRead(@"C:\Code\sharpcompress.rar")) { var reader = ReaderFactory.Open(stream); while (reader.MoveToNextEntry()) { if (!reader.Entry.IsDirectory) { reader.WriteEntryToDirectory(@"C:\temp"); } } }
