C#在線壓縮解壓Zip文件幫助類庫

Zip 壓縮文件

解壓zip格式的文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
//添加引用ICSharpCode.SharpZipLib.dll
using ICSharpCode.SharpZipLib.Zip;
namespace JsonsTeamZip
{
    /// <summary>
    /// Zip 壓縮文件
    /// </summary>
    public class Zip
    {
        public Zip()
        {
}
        #region 加壓方法
        /// <summary>
        /// 功能：壓縮文件（暫時只壓縮文件夾下一級目錄中的文件，文件夾及其子級被忽略）
        /// </summary>
        /// <param name="dirPath">被壓縮的文件夾夾路徑</param>
        /// <param name="zipFilePath">生成壓縮文件的路徑，為空則默認與被壓縮文件夾同一級目錄，名稱為：文件夾名 .zip</param>
        /// <param name="err">出錯信息</param>
        /// <returns>是否壓縮成功</returns>
        public static bool ZipFile(string dirPath, string zipFilePath, out string err)
        {
            err = "";
            if (dirPath == string.Empty)
            {
                err = "要壓縮的文件夾不能為空！";
                return false;
            }
            if (!Directory.Exists(dirPath))
            {
                err = "要壓縮的文件夾不存在！";
                return false;
            }
            //壓縮文件名為空時使用文件夾名＋.zip
            if (zipFilePath == string.Empty)
            {
                if (dirPath.EndsWith("http://"))
                {
                    dirPath = dirPath.Substring(0, dirPath.Length - 1);
                }
                zipFilePath = dirPath   ".zip";
            }
 
            try
            {
                string[] filenames = Directory.GetFiles(dirPath);
                using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))
                {
                    s.SetLevel(9);
                    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();
                }
            }
            catch (Exception ex)
            {
                err = ex.Message;
                return false;
            }
            return true;
        }
        #endregion
 
        #region 解壓
        /// <summary>
        /// 功能：解壓zip格式的文件。
        /// </summary>
        /// <param name="zipFilePath">壓縮文件路徑</param>
        /// <param name="unZipDir">解壓文件存放路徑,為空時默認與壓縮文件同一級目錄下，跟壓縮文件同名的文件夾</param>
        /// <param name="err">出錯信息</param>
        /// <returns>解壓是否成功</returns>
        public static bool UnZipFile(string zipFilePath, string unZipDir, out string err)
        {
            err = "";
            if (zipFilePath == string.Empty)
            {
                err = "壓縮文件不能為空！";
                return false;
            }
            if (!File.Exists(zipFilePath))
            {
                err = "壓縮文件不存在！";
                return false;
            }
            //解壓文件夾為空時默認與壓縮文件同一級目錄下，跟壓縮文件同名的文件夾
            if (unZipDir == string.Empty)
                unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
            if (!unZipDir.EndsWith("http://"))
                unZipDir  = "http://";
            if (!Directory.Exists(unZipDir))
                Directory.CreateDirectory(unZipDir);
 
            try
            {
                using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))
                {
 
                    ZipEntry theEntry;
                    while ((theEntry = s.GetNextEntry()) != null)
                    {
                        string directoryName = Path.GetDirectoryName(theEntry.Name);
                        string fileName = Path.GetFileName(theEntry.Name);
                        if (directoryName.Length > 0)
                        {
                            Directory.CreateDirectory(unZipDir   directoryName);
                        }
                        if (!directoryName.EndsWith("http://"))
                            directoryName  = "http://";
                        if (fileName != String.Empty)
                        {
                            using (FileStream streamWriter = File.Create(unZipDir   theEntry.Name))
                            {
 
                                int size = 2048;
                                byte[] data = new byte[2048];
                                while (true)
                                {
                                    size = s.Read(data, 0, data.Length);
                                    if (size > 0)
                                    {
                                        streamWriter.Write(data, 0, size);
                                    }
                                    else
                                    {
                                        break;
                                    }
                                }
                            }
                        }
                    }//while
                }
            }
            catch (Exception ex)
            {
                err = ex.Message;
                return false;
            }
            return true;
        }//解壓結(jié)束
        #endregion
    }
}

原文鏈接：C#在線壓縮解壓Zip文件幫助類庫