Question

在C＃中看起来没有内置的Library / API来解压缩zip文件。我正在寻找一个免费的（更好的开源）库/ API，它可以与.Net 3.5 + VSTS 2008 + C＃一起解压zip文件并将所有文件解压缩到一个特定的文件夹中。

任何推荐的库/ API或样品？

Answer 1

GPL

http://www.icsharpcode.net/OpenSource/SharpZipLib/

或限制较少的Ms-PL

http://www.codeplex.com/DotNetZip

要完成此答案，.net框架已ZipPackage我的成功率较低。

Answer 2

如果您只想将文件内容解压缩到文件夹，并且您知道自己只能在Windows上运行，则可以使用Windows Shell对象。我在本例中使用了Framework 4.0中的dynamic，但您可以使用Type.InvokeMember获得相同的结果。

dynamic shellApplication = Activator.CreateInstance(Type.GetTypeFromProgID("Shell.Application"));

dynamic compressedFolderContents = shellApplication.NameSpace(sourceFile).Items;
dynamic destinationFolder = shellApplication.NameSpace(destinationPath);

destinationFolder.CopyHere(compressedFolderContents);

您可以使用FILEOP_FLAGS来控制CopyHere方法的行为。

Answer 3

DotNetZip易于使用。这是一个解压缩样本

using (var zip = Ionic.Zip.ZipFile.Read("archive.zip"))
{
   zip.ExtractAll("unpack-directory");
}

如果您有更复杂的需求，例如您想要选择要提取的条目，或者是否有密码，或者您想要控制提取的文件的路径名等，等等，很多选择。 Check the help file了解更多示例。

DotNetZip是免费和开源的。

Answer 4

过去，我使用过DotNetZip（MS-PL），SharpZipLib（GPL）和7ZIP SDK for C#（公共域）。它们都很好用，而且是开源的。

在这种情况下我会选择DotNetZip，这里有一些来自C# Examples page的示例代码：

using (ZipFile zip = ZipFile.Read(ExistingZipFile))
{
  foreach (ZipEntry e in zip)
  {
    e.Extract(TargetDirectory);
  }
}

Answer 5

SharpZipLib

http://www.icsharpcode.net/OpenSource/SharpZipLib/

Answer 6

查看我的小型图书馆：http://zipstorer.codeplex.com

Answer 7

如果您想使用7-zip压缩，请查看Peter Bromberg的EggheadCafe article。注意：c＃的LZMA source code没有xml注释（实际上，很少有注释）。

Answer 8

如果你不想使用外部组件，这是我昨晚使用.NET的ZipPackage类开发的一些代码。

private static void Unzip()
{
    var zipFilePath = "c:\\myfile.zip";
    var tempFolderPath = "c:\\unzipped";

    using (Package pkg = ZipPackage.Open(zipFilePath, FileMode.Open, FileAccess.Read))
    {
        foreach (PackagePart part in pkg.GetParts())
        {
            var target = Path.GetFullPath(Path.Combine(tempFolderPath, part.Uri.OriginalString.TrimStart('/')));
            var targetDir = target.Remove(target.LastIndexOf('\\'));

            if (!Directory.Exists(targetDir))
                Directory.CreateDirectory(targetDir);

            using (Stream source = part.GetStream(FileMode.Open, FileAccess.Read))
            {
                CopyStream(source, File.OpenWrite(target));
            }
        }
    }
}

private static void CopyStream(Stream input, Stream output)
{
    byte[] buffer = new byte[4096];
    int read;
    while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
    {
        output.Write(buffer, 0, read);
    }
}

注意事项：

ZIP存档必须在其根目录中有一个[Content_Types] .xml文件。这对我的要求来说不是问题，因为我将控制通过此代码提取的任何ZIP文件的压缩。有关[Content_Types] .xml文件的更多信息，请参阅：http://msdn.microsoft.com/en-us/magazine/cc163372.aspx本文的图13下面有一个示例文件。
我没有测试过CopyStream方法以确保它的行为正确，因为我最初使用Stream.CopyTo（）方法为.NET 4.0开发了这个方法。

Answer 9

    #region CreateZipFile
    public void StartZip(string directory, string zipfile_path)
    {
        Label1.Text = "Please wait, taking backup";
            #region Taking files from root Folder
                string[] filenames = Directory.GetFiles(directory);

                // path which the zip file built in 
                ZipOutputStream p = new ZipOutputStream(File.Create(zipfile_path));
                foreach (string filename in filenames)
                {
                    FileStream fs = File.OpenRead(filename);
                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    ZipEntry entry = new ZipEntry(filename);
                    p.PutNextEntry(entry);
                    p.Write(buffer, 0 , buffer.Length);
                    fs.Close();
                }
            #endregion

            string dirName= string.Empty;
            #region Taking folders from root folder
                DirectoryInfo[] DI = new DirectoryInfo(directory).GetDirectories("*.*", SearchOption.AllDirectories);
                foreach (DirectoryInfo D1 in DI)
                {

                    // the directory you need to zip 
                    filenames = Directory.GetFiles(D1.FullName);
                    if (D1.ToString() == "backup")
                    {
                        filenames = null;
                        continue;
                    }
                    if (dirName == string.Empty)
                    {
                        if (D1.ToString() == "updates" || (D1.Parent).ToString() == "updates" || (D1.Parent).Parent.ToString() == "updates" || ((D1.Parent).Parent).Parent.ToString() == "updates" || (((D1.Parent).Parent).Parent).ToString() == "updates" || ((((D1.Parent).Parent).Parent)).ToString() == "updates")
                        {
                            dirName = D1.ToString();
                            filenames = null;
                            continue;
                        }
                    }
                    else
                    {
                        if (D1.ToString() == dirName) ;
                    }
                    foreach (string filename in filenames)
                    {
                        FileStream fs = File.OpenRead(filename);
                        byte[] buffer = new byte[fs.Length];
                        fs.Read(buffer, 0, buffer.Length);
                        ZipEntry entry = new ZipEntry(filename);
                        p.PutNextEntry(entry);
                        p.Write(buffer, 0, buffer.Length);
                        fs.Close();
                    }
                    filenames = null;
                }
                p.SetLevel(5);
                p.Finish();
                p.Close();
           #endregion
    }
    #endregion

    #region EXTRACT THE ZIP FILE
    public bool UnZipFile(string InputPathOfZipFile, string FileName)
    {
        bool ret = true;
        Label1.Text = "Please wait, extracting downloaded file";
        string zipDirectory = string.Empty;
        try
        {
            #region If Folder already exist Delete it
            if (Directory.Exists(Server.MapPath("~/updates/" + FileName))) // server data field
            {
                String[] files = Directory.GetFiles(Server.MapPath("~/updates/" + FileName));//server data field
                foreach (var file in files)
                    File.Delete(file);
                Directory.Delete(Server.MapPath("~/updates/" + FileName), true);//server data field
            }
            #endregion


            if (File.Exists(InputPathOfZipFile))
            {
                string baseDirectory = Path.GetDirectoryName(InputPathOfZipFile);

                using (ZipInputStream ZipStream = new

                ZipInputStream(File.OpenRead(InputPathOfZipFile)))
                {
                    ZipEntry theEntry;
                    while ((theEntry = ZipStream.GetNextEntry()) != null)
                    {
                        if (theEntry.IsFile)
                        {
                            if (theEntry.Name != "")
                            {
                                string directoryName = theEntry.Name.Substring(theEntry.Name.IndexOf(FileName)); // server data field

                                string[] DirectorySplit = directoryName.Split('\\');
                                for (int i = 0; i < DirectorySplit.Length - 1; i++)
                                {
                                    if (zipDirectory != null || zipDirectory != "")
                                        zipDirectory = zipDirectory + @"\" + DirectorySplit[i];
                                    else
                                        zipDirectory = zipDirectory + DirectorySplit[i];
                                }
                                string first = Server.MapPath("~/updates") + @"\" + zipDirectory;
                                if (!Directory.Exists(first))
                                    Directory.CreateDirectory(first);


                                string strNewFile = @"" + baseDirectory + @"\" + directoryName;


                                if (File.Exists(strNewFile))
                                {
                                    continue;
                                }
                                zipDirectory = string.Empty;

                                using (FileStream streamWriter = File.Create(strNewFile))
                                {
                                    int size = 2048;
                                    byte[] data = new byte[2048];
                                    while (true)
                                    {
                                        size = ZipStream.Read(data, 0, data.Length);
                                        if (size > 0)
                                            streamWriter.Write(data, 0, size);
                                        else
                                            break;
                                    }
                                    streamWriter.Close();
                                }
                            }
                        }
                        else if (theEntry.IsDirectory)
                        {
                            string strNewDirectory = @"" + baseDirectory + @"\" +

                            theEntry.Name;
                            if (!Directory.Exists(strNewDirectory))
                            {
                                Directory.CreateDirectory(strNewDirectory);
                            }
                        }
                    }
                    ZipStream.Close();
                }
            }
        }
        catch (Exception ex)
        {
            ret = false;
        }
        return ret;
    }  
    #endregion

Answer 10

我更喜欢SharpZiplib 请找到示例代码 UnZip Files in .Net C#

Answer 11

我会推荐我们的http://www.rebex.net/zip.net/，但我有偏见。 Download试用并自行检查功能和样本。

Answer 12

SevenZipSharp是tha 7z.dll和LZMA SDK的包装器，它是开源的，免费的。

SevenZipCompressor compressor = new SevenZipCompressor(); 
compressor.CompressionLevel = CompressionLevel.Ultra;
compressor.CompressionMethod = CompressionMethod.Lzma;
compressor.CompressionMode = CompressionMode.Create;
compressor.CompressFiles(...);

推荐一个库/ API来解压缩C＃中的文件

12 个答案: