Csharp 利用ICSharpCode.SharpZipLib解壓文件

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/*  *http://www.koders.com/csharp/fid7241B3C8598C20BA18652B5BB5C19D220988E2D4.aspx?s=file  * http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx  * http://www.eggheadcafe.com/tutorials/aspnet/9ce6c242-c14c-4969-9251-af95e4cf320f/zip--unzip-folders-and-f.aspx  * http://www.eggheadcafe.com/community/csharp/2/10060149/zip-a-file-using-icsharpcodesharpziplibzip.aspx  * http://www.eggheadcafe.com/tutorials/csharp/9ce6c242-c14c-4969-9251-af95e4cf320f/zip--unzip-folders-and-files-with-c.aspx  *  */   using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Management; using ICSharpCode.SharpZipLib.Checksums; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.GZip; using System.IO; using System.Collections; using System.Windows;     namespace CompressFolders {     /// <summary>     /// 20120530     /// 涂聚文 Geovin Du     /// </summary>     public partial class Form1 : Form     {         string strBaseDir = "";         /// <summary>         ///         /// </summary>         public Form1()         {             InitializeComponent();         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void Form1_Load(object sender, EventArgs e)         {             //指定文件             //this.saveFileDialog1.Filter = "压缩文件(zip)|*.zip";             //this.saveFileDialog1.Title = "保存文件";             //this.saveFileDialog1.FileName = "数据备份";             //this.saveFileDialog1.InitialDirectory =Application.StartupPath;             //this.saveFileDialog1.RestoreDirectory = true;             //string Fname = "";             //if (this.saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)             //{             //    string[] filenames ={ "Properties", "Form1.resx", "frmMain.Designer.cs", "Program.cs", "Form1.Designer.cs", "Form1.resx", "frmMain.cs" };//可以自己定义所压缩的文件             //    Fname = this.saveFileDialog1.FileName;             //    ZipOutputStream s = new ZipOutputStream(File.Create(Fname));//创建压缩文件的目录及名称             //    s.Password = "geovindu";//设置压缩文件的密码             //    s.SetLevel(6);// 0 - store only to 9 - means best compression             //    foreach (string file in filenames)             //    {             //        if (Directory.Exists(Application.StartupPath + @"/" + file))             //        {             //            strBaseDir = Application.StartupPath + @"/" + file + @"/";//压缩文件夹             //            addZipEntry(strBaseDir, s);             //        }             //        else             //        {             //            FileStream fs = File.OpenRead(Application.StartupPath + @"/" + file);//打开文件读取             //            byte[] buffer = new byte[fs.Length];             //            fs.Read(buffer, 0, buffer.Length);             //            string strEntryName = file;             //            ZipEntry entry = new ZipEntry(strEntryName);             //            s.PutNextEntry(entry);             //            s.Write(buffer, 0, buffer.Length);             //            fs.Close();             //        }             //    }             //    s.Finish();             //    s.Close();             //}             }         /// <summary>         /// 壓縮文件夾         /// </summary>         /// <param name="PathStr"></param>         /// <param name="s"></param>         private void addZipEntry(string PathStr, ZipOutputStream s)         {             DirectoryInfo di = new DirectoryInfo(PathStr);             foreach (DirectoryInfo item in di.GetDirectories())             {                 addZipEntry(item.FullName, s);             }             foreach (FileInfo item in di.GetFiles())             {                 if (item.FullName.Replace(strBaseDir, "") != "Thumbs.db")                 {                     FileStream fs = File.OpenRead(item.FullName);                     byte[] buffer = new byte[fs.Length];                     fs.Read(buffer, 0, buffer.Length);                     string strEntryName = item.FullName.Replace(strBaseDir, "");                     strEntryName = @"Properties/" + strEntryName;                     ZipEntry entry = new ZipEntry(strEntryName);                     s.PutNextEntry(entry);                     s.Write(buffer, 0, buffer.Length);                     fs.Close();                 }             }         }         /// <summary>         /// 解压缩         /// </summary>         /// <param name="zipfile"></param>         /// <param name="directory"></param>         private void Unzip(string zipfile, string directory)         {             if (!Directory.Exists(directory))             {                 Directory.CreateDirectory(directory);             }             ZipInputStream zis = new ZipInputStream(File.OpenRead(zipfile));             string str = zis.Password;             zis.Password = "塗聚文";             ZipEntry theEntry = null;             while ((theEntry = zis.GetNextEntry()) != null)             {                 ZipConstants.DefaultCodePage = 936;                 string directoryName = Path.GetDirectoryName(theEntry.Name);//directoryName=null                 string fileName = Path.GetFileName(theEntry.Name);                                   if (directoryName != string.Empty)                 {                     if ((directoryName == "Properties") && (!Directory.Exists(directory + @"/" + directoryName)))                     {                         Directory.CreateDirectory(directory + @"/" + directoryName);                     }                 }                 if (fileName != string.Empty)                 {                     FileStream streamWriter = File.Create(Path.Combine(directory, theEntry.Name));                     int size = 2048;                     byte[] data = new byte[2048];                     while (true)                     {                         size = zis.Read(data, 0, data.Length);                         if (size > 0)                         {                             streamWriter.Write(data, 0, size);                         }                         else                         {                             break;                         }                     }                     streamWriter.Close();                 }             }             zis.Close();         }             /// <summary>         ///壓縮 100M大文件進程不行         /// 塗聚文 Geovin Du         /// </summary>         /// <param name="inputFolderPath"></param>         /// <param name="outputPathAndFile"></param>         /// <param name="password"></param>         public static void ZipFiles(string inputFolderPath, string outputPathAndFile, string password)         {             ArrayList ar = GenerateFileList(inputFolderPath); // generate file list             int TrimLength = (Directory.GetParent(inputFolderPath)).ToString().Length;             // find number of chars to remove     // from orginal file path             TrimLength += 1; //remove '\'             FileStream ostream;             byte[] obuffer;             string outPath = inputFolderPath + @"\" + outputPathAndFile;             ZipOutputStream oZipStream = new ZipOutputStream(File.Create(outPath)); // create zip stream             if (password != null && password != String.Empty)                 oZipStream.Password = password;             oZipStream.SetLevel(9); // maximum compression             ZipEntry oZipEntry;             foreach (string Fil in ar) // for each file, generate a zipentry             {                 oZipEntry = new ZipEntry(Fil.Remove(0, TrimLength));                 oZipStream.PutNextEntry(oZipEntry);                   if (!Fil.EndsWith(@"/")) // if a file ends with '/' its a directory                 {                     ostream = File.OpenRead(Fil);                     obuffer = new byte[ostream.Length];                     ostream.Read(obuffer, 0, obuffer.Length);                     oZipStream.Write(obuffer, 0, obuffer.Length);                 }             }             oZipStream.Finish();             oZipStream.Close();         }         /// <summary>         ///         /// </summary>         /// <param name="Dir"></param>         /// <returns></returns>         public static ArrayList GenerateFileList(string Dir)         {             ArrayList fils = new ArrayList();             bool Empty = true;             foreach (string file in Directory.GetFiles(Dir)) // add each file in directory             {                 fils.Add(file);                 Empty = false;             }               if (Empty)             {                 if (Directory.GetDirectories(Dir).Length == 0)                 // if directory is completely empty, add it                 {                     fils.Add(Dir + @"/");                 }             }               foreach (string dirs in Directory.GetDirectories(Dir)) // recursive             {                 foreach (object obj in GenerateFileList(dirs))                 {                     fils.Add(obj);                 }             }             return fils; // return file list         }           /// <summary>         /// 打開選擇文件夾         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void btnOpen_Click(object sender, EventArgs e)         {             FolderBrowserDialog fbd = new FolderBrowserDialog();             if (fbd.ShowDialog() == DialogResult.OK)             {                 //MessageBox.Show(fbd.SelectedPath);                 this.textBox1.Text = fbd.SelectedPath;             }         }         /// <summary>         /// 保存         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void buttonSave_Click(object sender, EventArgs e)         {             ZipFiles(this.textBox1.Text.Trim(), this.textBox2.Text.Trim(), "geovindu");           }         /// <summary>         /// 選擇文件夾         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void button1_Click(object sender, EventArgs e)         {             FolderBrowserDialog fbd = new FolderBrowserDialog();             if (fbd.ShowDialog() == DialogResult.OK)             {                 //MessageBox.Show(fbd.SelectedPath);                 this.textBox2.Text = fbd.SelectedPath;             }         }       } }

 還可以用其他方法壓縮或解壓方法：

可以引用：

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using System.IO; using System.IO.Compression; // 此方法也可以壓縮或解壓，GZipStream() 不能用第三方解壓 using Shell32;//Microsoft Shell Controls And Automation //此方法也是可以 using System.Threading; using System.Runtime.InteropServices; //using java.io;//此方法也是可以 //using java.util;//WINDOWS\Microsoft.NET\Framework\v2.0.50727\vjslib.dll //using java.util.zip;

 以上都寫過測試程序通過（2012-08-25）。Shell大文件夾也可以。