Question

我想在C＃中压缩文件和目录。我在Internet上找到了一些解决方案，但它们非常复杂，我无法在我的项目中运行它们。有人能建议我一个明确有效的解决方案吗？

Answer 1

您可以在GZipStream命名空间

中使用System.IO.Compression

.NET 2.0.

public static void CompressFile(string path)
{
    FileStream sourceFile = File.OpenRead(path);
    FileStream destinationFile = File.Create(path + ".gz");

    byte[] buffer = new byte[sourceFile.Length];
    sourceFile.Read(buffer, 0, buffer.Length);

    using (GZipStream output = new GZipStream(destinationFile,
        CompressionMode.Compress))
    {
        Console.WriteLine("Compressing {0} to {1}.", sourceFile.Name,
            destinationFile.Name, false);

        output.Write(buffer, 0, buffer.Length);
    }

    // Close the files.
    sourceFile.Close();
    destinationFile.Close();
}

.NET 4

public static void Compress(FileInfo fi)
    {
        // Get the stream of the source file.
        using (FileStream inFile = fi.OpenRead())
        {
            // Prevent compressing hidden and 
            // already compressed files.
            if ((File.GetAttributes(fi.FullName) 
                & FileAttributes.Hidden)
                != FileAttributes.Hidden & fi.Extension != ".gz")
            {
                // Create the compressed file.
                using (FileStream outFile = 
                            File.Create(fi.FullName + ".gz"))
                {
                    using (GZipStream Compress = 
                        new GZipStream(outFile, 
                        CompressionMode.Compress))
                    {
                        // Copy the source file into 
                        // the compression stream.
                    inFile.CopyTo(Compress);

                        Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
                            fi.Name, fi.Length.ToString(), outFile.Length.ToString());
                    }
                }
            }
        }
    }

http://msdn.microsoft.com/en-us/library/ms404280.aspx

Answer 2

我正在添加这个答案，因为我找到了比现有答案更简单的方法：

在解决方案中安装DotNetZip DLL（最简单的方法是从nuget安装the package）
添加对DLL的引用。
通过添加：using Ionic.Zip;
压缩文件

代码：

using (ZipFile zip = new ZipFile())
{
    zip.AddFile("C:\test\test.txt");
    zip.AddFile("C:\test\test2.txt");
    zip.Save("C:\output.zip");
}

如果您不希望在zip文件中镜像原始文件夹结构，请查看AddFile（）和AddFolder（）等的覆盖。

Answer 3

System.IO.Packaging中有一个名为ZipPackage的内置类：

http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage(v=vs.100).aspx

Answer 4

http://www.icsharpcode.net/opensource/sharpziplib/

Answer 5

您可以使用ms-dos命令行程序compact.exe。查看cmd中的参数compact.exe，并使用.NET方法Process.Start（）。

启动此过程

Answer 6

只需使用以下代码压缩文件即可。

       public void Compressfile()
        {
             string fileName = "Text.txt";
             string sourcePath = @"C:\SMSDBBACKUP";
             DirectoryInfo di = new DirectoryInfo(sourcePath);
             foreach (FileInfo fi in di.GetFiles())
             {
                 //for specific file 
                 if (fi.ToString() == fileName)
                 {
                     Compress(fi);
                 }
             } 
        }

public static void Compress(FileInfo fi)
        {
            // Get the stream of the source file.
            using (FileStream inFile = fi.OpenRead())
            {
                // Prevent compressing hidden and 
                // already compressed files.
                if ((File.GetAttributes(fi.FullName)
                    & FileAttributes.Hidden)
                    != FileAttributes.Hidden & fi.Extension != ".gz")
                {
                    // Create the compressed file.
                    using (FileStream outFile =
                                File.Create(fi.FullName + ".gz"))
                    {
                        using (GZipStream Compress =
                            new GZipStream(outFile,
                            CompressionMode.Compress))
                        {
                            // Copy the source file into 
                            // the compression stream.
                            inFile.CopyTo(Compress);

                            Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
                                fi.Name, fi.Length.ToString(), outFile.Length.ToString());
                        }
                    }
                }
            }
        }

    }

Answer 7

使用http://dotnetzip.codeplex.com/来压缩ZIP文件或目录，没有内置类直接在.NET中执行

Answer 8

Source code taken from MSDN that is compatible to .Net 2.0 and above

public static void CompressFile(string path)
        {
            FileStream sourceFile = File.OpenRead(path);
            FileStream destinationFile = File.Create(path + ".gz");

            byte[] buffer = new byte[sourceFile.Length];
        sourceFile.Read(buffer, 0, buffer.Length);

        using (GZipStream output = new GZipStream(destinationFile,
            CompressionMode.Compress))
        {
            Console.WriteLine("Compressing {0} to {1}.", sourceFile.Name,
                destinationFile.Name, false);

            output.Write(buffer, 0, buffer.Length);
        }

        // Close the files.
        sourceFile.Close();
        destinationFile.Close();
    }

Answer 9

使用DotNetZip http://dotnetzip.codeplex.com/，ZipFile类上有一个AddDirectory（）方法可以执行您想要的操作：

using (var zip = new Ionic.Zip.ZipFile())
{
    zip.AddDirectory("DirectoryOnDisk", "rootInZipFile");
    zip.Save("MyFile.zip");
}

Bonne继续......

Answer 10

对于.Net Framework 4.5，这是我发现的最清晰的示例：

using System;
using System.IO;
using System.IO.Compression;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string startPath = @"c:\example\start";
            string zipPath = @"c:\example\result.zip";
            string extractPath = @"c:\example\extract";

            ZipFile.CreateFromDirectory(startPath, zipPath);

            ZipFile.ExtractToDirectory(zipPath, extractPath);
        }
    }
}

您需要添加对System.IO.Compression.FileSystem的引用

发件人：https://docs.microsoft.com/en-us/dotnet/standard/io/how-to-compress-and-extract-files

如何压缩文件

10 个答案: