C# 压缩和解压文件及文件夹

C#压缩和解压文件及文件夹有以下几种方式：

• ZipFile(.NET 4.5 System.IO.Compression命名空间中新提供的压缩类)
• ZipArchive
• SharpZipLib和DotNetZip?
• 使用第三方压缩软件

使用ZipFile

引用.NET 4.5程序集：System.IO.Compression 和 System.IO.Compression.FileSystem.

    public class CompressionHelper
    {
        /// <summary>
        /// 将指定目录压缩为Zip文件
        /// </summary>
        /// <param name="folderPath">文件夹地址 D:/1/ </param>
        /// <param name="zipPath">zip地址 D:/1.zip </param>
        public static void CompressDirectoryZip(string folderPath, string zipPath)
        {
            DirectoryInfo directoryInfo = new DirectoryInfo(zipPath);

            if (directoryInfo.Parent != null)
            {
                directoryInfo = directoryInfo.Parent;
            }

            if (!directoryInfo.Exists)
            {
                directoryInfo.Create();
            }

            System.IO.Compression.ZipFile.CreateFromDirectory(folderPath, zipPath, CompressionLevel.Optimal, false);
        }

        /// <summary>
        /// 将指定文件压缩为Zip文件
        /// </summary>
        /// <param name="filePath">文件地址 D:/1.txt </param>
        /// <param name="zipPath">zip地址 D:/1.zip </param>
        public static void CompressFileZip(string filePath, string zipPath)
        {

            FileInfo fileInfo = new FileInfo(filePath);
            string dirPath = fileInfo.DirectoryName?.Replace("\\", "/") + "/";
            string tempPath = dirPath + Guid.NewGuid() + "_temp/";
            if (!Directory.Exists(tempPath))
            {
                Directory.CreateDirectory(tempPath);
            }
            fileInfo.CopyTo(tempPath + fileInfo.Name);
            CompressDirectoryZip(tempPath, zipPath);
            DirectoryInfo directory = new DirectoryInfo(tempPath);
            if (directory.Exists)
            {
                //将文件夹属性设置为普通,如：只读文件夹设置为普通
                directory.Attributes = FileAttributes.Normal;

                directory.Delete(true);
            }
        }


        /// <summary>
        /// 解压Zip文件到指定目录
        /// </summary>
        /// <param name="zipPath">zip地址 D:/1.zip</param>
        /// <param name="folderPath">文件夹地址 D:/1/</param>
        public static void DecompressZip(string zipPath, string folderPath)
        {
            DirectoryInfo directoryInfo = new DirectoryInfo(folderPath);

            if (!directoryInfo.Exists)
            {
                directoryInfo.Create();
            }

            System.IO.Compression.ZipFile.ExtractToDirectory(zipPath, folderPath);
        }

    }

使用ZipArchive

    public class ZipArchiveHelper
    {
        public static void ZipFile(string sourceFilePath, string zipFilePath)
        {
            System.IO.Compression.ZipFile.CreateFromDirectory(sourceFilePath, zipFilePath);

            // 创建并添加被压缩文件
            using (FileStream zipFileToOpen = new FileStream(sourceFilePath, FileMode.Create))
            {
                using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Create))
                {
                    string filename = System.IO.Path.GetFileName(zipFilePath);
                    ZipArchiveEntry readMeEntry = archive.CreateEntry(filename);
                    using (System.IO.Stream stream = readMeEntry.Open())
                    {
                        byte[] bytes = System.IO.File.ReadAllBytes(zipFilePath);
                        stream.Write(bytes, 0, bytes.Length);
                    }
                }
            }
        }

        /// <summary>
        /// 在压缩文件中添加文件
        /// </summary>
        /// <param name="sourceFilePath"></param>
        /// <param name="zipFilePath"></param>
        public static void AddZipFile(string sourceFilePath, string zipFilePath)
        {
            using (FileStream zipFileToOpen = new FileStream(zipFilePath, FileMode.Create))
            {
                using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Create))
                {
                    string filename = System.IO.Path.GetFileName(sourceFilePath);
                    ZipArchiveEntry readMeEntry = archive.CreateEntry(filename);
                    using (System.IO.Stream stream = readMeEntry.Open())
                    {
                        byte[] bytes = System.IO.File.ReadAllBytes(sourceFilePath);
                        stream.Write(bytes, 0, bytes.Length);
                    }
                }
            }

        }

        /// <summary>
        /// 解压压缩文件
        /// </summary>
        /// <param name="zipFilePath"></param>
        /// <param name="unzipFilePath"></param>
        public static void UzipFile(string zipFilePath, string unzipFilePath)
        {
            using (FileStream instream = File.OpenRead(zipFilePath))
            {
                using (ZipArchive zip = new ZipArchive(instream))
                {

                    foreach (ZipArchiveEntry et in zip.Entries)
                    {
                        using (Stream stream = et.Open())
                        {
                            using (FileStream fsout = File.Create(System.IO.Path.Combine(unzipFilePath, et.Name)))
                            {
                                stream.CopyTo(fsout);
                            }
                        }
                    }
                }
            }
        }
    }

使用SharpZipLib

    public class SharpZipLib
    {
        /// <summary>
        /// 压缩文件夹
        /// </summary>
        /// <param name="dirPath">文件夹路径</param>
        /// <param name="password">压缩包设置密码(注：可为空)</param>
        /// <param name="zipFilePath">压缩包路径+名称+后缀(注：可为空,默认同目录)</param>
        /// <returns></returns>
        public string ZipFiles(string dirPath, string password, string zipFilePath)
        {
            if (zipFilePath == string.Empty)
            {
                //压缩文件名为空时使用文件夹名＋.zip
                zipFilePath = GetZipFilePath(dirPath);
            }
            try
            {
                string[] filenames = Directory.GetFiles(dirPath);
                using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))
                {
                    s.SetLevel(9);
                    s.Password = password;
                    byte[] buffer = new byte[4096];
                    foreach (string file in filenames)
                    {
                        ZipEntry entry = new ZipEntry(Path.GetFileName(file));
                        entry.DateTime = DateTime.Now;
                        s.PutNextEntry(entry);
                        using (FileStream fs = File.OpenRead(file))
                        {
                            int sourceBytes;
                            do
                            {
                                sourceBytes = fs.Read(buffer, 0, buffer.Length);
                                s.Write(buffer, 0, sourceBytes);
                            } while (sourceBytes > 0);
                        }
                    }
                    s.Finish();
                    s.Close();
                }
                return zipFilePath;
            }
            catch (Exception ex)
            {
                return ex.ToString();
            }
        }

        /// <summary>
        /// 减压文件夹
        /// </summary>
        /// <param name="zipFilePath">压缩包地址+名称+后缀</param>
        /// <param name="password">密码(注：可为空)</param>
        /// <param name="unZippath">减压后保存的路径(注：可为空,默认同目录)</param>
        /// <returns></returns>
        public string UnZips(string zipFilePath, string password, string unZippath)
        {
            try
            {
                if (unZippath == string.Empty)
                {
                    //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹
                    unZippath = GetUnZipFilePath(zipFilePath);
                }
                if (CreatePath(unZippath) && IsExistFilePath(zipFilePath))
                {
                    string directoryName = Path.GetDirectoryName(unZippath);
                    {
                        using (ZipInputStream zipInStream = new ZipInputStream(File.OpenRead(zipFilePath)))
                        {
                            zipInStream.Password = password;
                            ZipEntry entry = zipInStream.GetNextEntry();
                            do
                            {
                                using (FileStream fileStreamOut = File.Create(directoryName + "\\" + entry.Name))
                                {
                                    int size = 2048;
                                    byte[] buffer = new byte[size];
                                    do
                                    {
                                        size = zipInStream.Read(buffer, 0, buffer.Length);
                                        fileStreamOut.Write(buffer, 0, size);
                                    } while (size > 0);
                                    fileStreamOut.Close();
                                    fileStreamOut.Dispose();
                                }
                            } while ((entry = zipInStream.GetNextEntry()) != null);
                            zipInStream.Close();
                            zipInStream.Dispose();
                            return unZippath;
                        }
                    }
                }
                return "请确认压缩包文件地址与解压后保存地址是否可以访问！";
            }
            catch (Exception ex)
            {
                return ex.ToString();
            }
        }

        /// <summary>  
        /// 压缩文件  
        /// </summary>  
        /// <param name="dirFilePath">文件路径+名称+后缀</param>
        /// <param name="password">压缩包设置密码(注：可为空)</param>
        /// <param name="zipFilePath">压缩包路径+名称+后缀(注：可为空,默认同目录)</param>
        public string ZipFile(string dirFilePath, string password, string zipFilePath)
        {
            try
            {
                if (IsExistFilePath(dirFilePath))
                {
                    if (zipFilePath == string.Empty)
                    {
                        zipFilePath = GetZipFilePath(dirFilePath.Replace(Path.GetExtension(dirFilePath), ""));
                    }
                    string filename = Path.GetFileName(dirFilePath);
                    FileStream streamToZip = new FileStream(dirFilePath, FileMode.Open, FileAccess.Read);
                    FileStream zipFile = File.Create(zipFilePath);
                    using (ZipOutputStream zipStream = new ZipOutputStream(zipFile))
                    {
                        ZipEntry zipEntry = new ZipEntry(filename);
                        zipStream.PutNextEntry(zipEntry);
                        zipStream.SetLevel(9);
                        zipStream.Password = password;
                        byte[] buffer = new byte[2048];
                        System.Int32 size = streamToZip.Read(buffer, 0, buffer.Length);
                        zipStream.Write(buffer, 0, size);
                        while (size < streamToZip.Length)
                        {
                            int sizeRead = streamToZip.Read(buffer, 0, buffer.Length);
                            zipStream.Write(buffer, 0, sizeRead);
                            size += sizeRead;
                        }
                        zipStream.Finish();
                        zipStream.Close();
                        streamToZip.Close();
                    }
                    return zipFilePath;
                }
                return "请确认压缩包文件地址与解压后保存地址是否可以访问！";
            }
            catch (Exception ex)
            {
                return ex.ToString();
            }
        }

        /// <summary>
        /// 创建路径
        /// </summary>
        /// <param name="path">路径</param>
        /// <returns></returns>
        public bool CreatePath(string path)
        {
            try
            {
                if (!Directory.Exists(path))
                {
                    Directory.CreateDirectory(path);
                    return true;
                }
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

        /// <summary>
        /// 文件是否存在
        /// </summary>
        /// <param name="filePath">路劲+名称+后缀</param>
        /// <returns></returns>
        public bool IsExistFilePath(string filePath)
        {
            if (!File.Exists(filePath))
            {
                return false;
            }
            return true;
        }

        /// <summary>
        /// 获取默认压缩路径+文件名+后缀【.zip】
        /// </summary>
        /// <param name="path">需要压缩的文件夹路径(注：不包含.后缀)</param>
        /// <returns>与压缩文件同一目录路径</returns>
        public string GetZipFilePath(string path)
        {
            if (path.EndsWith("\\"))
            {
                path = path.Substring(0, path.Length - 1);
            }
            return path + ".zip";
        }

        /// <summary>
        ///  获取默认解压路径
        /// </summary>
        /// <param name="path">需要解压的压缩包文件地址</param>
        /// <returns>与解压文件同一目录路径</returns>
        public string GetUnZipFilePath(string path)
        {
            path = path.Replace(Path.GetFileName(path), Path.GetFileNameWithoutExtension(path));
            if (!path.EndsWith("/"))
            {
                path += "/";
            }
            return path;
        }

        /// <summary>
        /// 获取路径中所有文件
        /// </summary>
        /// <param name="path">路径</param>
        /// <returns></returns>
        private Hashtable getAllFies(string path)
        {
            Hashtable FilesList = new Hashtable();
            DirectoryInfo fileDire = new DirectoryInfo(path);
            if (fileDire.Exists)
            {
                this.getAllDirFiles(fileDire, FilesList);
                this.getAllDirsFiles(fileDire.GetDirectories(), FilesList);
            }
            this.getAllDirFiles(fileDire, FilesList);
            this.getAllDirsFiles(fileDire.GetDirectories(), FilesList);
            return FilesList;
        }

        /// <summary>  
        /// 获取一个文件夹下的所有文件夹里的文件  
        /// </summary>  
        /// <param name="dirs"></param>  
        /// <param name="filesList"></param>  
        private void getAllDirsFiles(DirectoryInfo[] dirs, Hashtable filesList)
        {
            foreach (DirectoryInfo dir in dirs)
            {
                foreach (FileInfo file in dir.GetFiles("*.*"))
                {
                    filesList.Add(file.FullName, file.LastWriteTime);
                }
                this.getAllDirsFiles(dir.GetDirectories(), filesList);
            }
        }

        /// <summary>  
        /// 获取一个文件夹下的文件  
        /// </summary>  
        /// <param name="strDirName">目录名称</param>  
        /// <param name="filesList">文件列表HastTable</param>  
        private void getAllDirFiles(DirectoryInfo dir, Hashtable filesList)
        {
            foreach (FileInfo file in dir.GetFiles("*.*"))
            {
                filesList.Add(file.FullName, file.LastWriteTime);
            }
        }
    }

使用第三方压缩软件

    public  class WinrarZip
    {
        public static bool Zip(string strzipPath, string strtxtPath, string password)
        {
            try
            {
                System.Diagnostics.Process Process1 = new System.Diagnostics.Process();
                Process1.StartInfo.FileName = "Winrar.exe";
                Process1.StartInfo.CreateNoWindow = true;
                Process1.StartInfo.Arguments = " a -p" + password + " " + strzipPath + " " + strtxtPath;
                //strtxtPath = "c://freezip//";
                //Process1.StartInfo.Arguments = " x -p123456 " + strzipPath + " " + strtxtPath;
                Process1.Start();
                if (Process1.HasExited)
                {
                    return true;
                }
                return true;
            }
            catch (Exception)
            {
                return false;
            }

        }

        public static bool UZip(string strzipPath, string strtxtPath, string password)
        {
            try
            {
                System.Diagnostics.Process Process1 = new System.Diagnostics.Process();
                Process1.StartInfo.FileName = "Winrar.exe";
                Process1.StartInfo.CreateNoWindow = true;
                //Process1.StartInfo.Arguments = " a -p123456 " + strzipPath + " " + strtxtPath;
                //strtxtPath = "c://freezip//";
                Process1.StartInfo.Arguments = " x -p" + password + " " + strzipPath + " " + strtxtPath;
                Process1.Start();
                if (Process1.HasExited)
                {
                    return true;
                }
                return true;
            }
            catch (Exception)
            {

                return false;
            }

        }
    }

参考：

C# 使用原生 System.IO.Compression 实现 zip 的压缩与解压-CSDN博客

C#实现压缩与解压缩方案_c# 解压缩-CSDN博客

https://www.cnblogs.com/myfy/p/6048083.html