使用C#解压缩.gz文件 [英] Unzip .gz file using c#

问题描述

如何使用C#解压缩.gz文件并将文件保存在特定文件夹中?

How to unzip .gz file and save files in a specific folder using c#?

这是我第一次遇到.gz文件.我正在搜索如何解压缩它，但对我而言不起作用.它没有将.gz文件解压缩到特定文件夹中.我不想使用任何第三方应用程序.

This is the first time I encounter a .gz file. I've search in how to unzip it yet It didn't work for me. It didn't unzip .gz file in a specific folder. I don't want to used any third party application.

谁能给我一个有关如何解压缩示例代码.然后将文件保存在文件夹中.谢谢.

Can anyone gave me a sample code on how to unzip it. Then save file in a folder. Thanks.

推荐答案

以下示例来自

The following example from MSDN shows how to use the GZipStream class to compress and decompress a directory of files.

namespace zip
{
    public class Program
    {
        public static void Main()
        {
            string directoryPath = @"c:\users\public\reports";

            DirectoryInfo directorySelected = new DirectoryInfo(directoryPath);

            foreach (FileInfo fileToCompress in directorySelected.GetFiles())
            {
                Compress(fileToCompress);
            }

            foreach (FileInfo fileToDecompress in directorySelected.GetFiles("*.gz"))
            {
                Decompress(fileToDecompress);
            }
        }

        public static void Compress(FileInfo fileToCompress)
        {
            using (FileStream originalFileStream = fileToCompress.OpenRead())
            {
                if ((File.GetAttributes(fileToCompress.FullName) & FileAttributes.Hidden) != FileAttributes.Hidden & fileToCompress.Extension != ".gz")
                {
                    using (FileStream compressedFileStream = File.Create(fileToCompress.FullName + ".gz"))
                    {
                        using (GZipStream compressionStream = new GZipStream(compressedFileStream, CompressionMode.Compress))
                        {
                            originalFileStream.CopyTo(compressionStream);
                            Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
                                fileToCompress.Name, fileToCompress.Length.ToString(), compressedFileStream.Length.ToString());
                        }
                    }
                }
            }
        }

        public static void Decompress(FileInfo fileToDecompress)
        {
            using (FileStream originalFileStream = fileToDecompress.OpenRead())
            {
                string currentFileName = fileToDecompress.FullName;
                string newFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length);

                using (FileStream decompressedFileStream = File.Create(newFileName))
                {
                    using (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
                    {
                        decompressionStream.CopyTo(decompressedFileStream);
                        Console.WriteLine("Decompressed: {0}", fileToDecompress.Name);
                    }
                }
            }
        }
    }
}

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