使用带有进度报告的 C# 提取 ZipFile

Question

任何人都可以告诉我是否有可能（并给出一个例子）关于如何有一个进度条（如果可能的话还有状态标签）显示使用“ZipFile”（Ionic.zip， http ://dotnetzip.codeplex.com/ ）？

我的 WinForm 在将 ZIP 文件从我选择的路径提取到新路径方面做得很好，不用担心使用文本框和浏览按钮以及所有爵士乐......但是唯一的问题是我在这段时间内无法在我的表单上使用任何东西就好像它已经冻结了，但这只是因为它在后台解压缩了 ZIP 文件。

ZIP 文件是一个大文件，我想通过添加并使用进度条显示解压过程与准确的 ETA 来减少对正在发生的事情的混淆。

这当然是可能的，我只是不知道如何在 C# WinForms 中做到这一点，我在网上有一个相当不错的外观，却没有真正找到适合我的示例。

这是我所拥有的粗略示例：

private void button1_Click(object sender, EventArgs e)
{
    var ROBOT0007 = textBox1.Text + @"\" + "ROBOT0007"; //ROBOT0007 folder
    var ROBOT_INSTALL = textBox1.Text + @"\" + "911" + @"\" + "files"; //ROBOT0007/911/files
    var ROBOT_INSTALL_SPECIAL = ROBOT_INSTALL + @"\" + "special.rar";  //ROBOT0007/911/files/special.rar

    //If the path has text...
    if (textBox1.TextLength > 0)
    {
        //if the subfolder doesn't exist then make it.
        if (!Directory.Exists(ROBOT0007))
        {
            Directory.CreateDirectory(ROBOT0007);
        }

        //if the textbox directory exists
        if (Directory.Exists(ROBOT0007))
        {
            using (ZipFile zip = ZipFile.Read(ROBOT_INSTALL_SPECIAL))
            {
                zip.ExtractAll(ROBOT0007, ExtractExistingFileAction.OverwriteSilently);

            } 
        }
    }
}

更新（2014 年 4 月 11 日）：我已经删除了文本框，现在回到简单的基础，以下与后台工作人员一起工作，但是取消按钮对 RAR 文件没有影响......有什么建议吗？

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Threading;
using System.Text;
using System.Windows.Forms;
using Ionic.Zip;
using System.IO;

namespace BackgroundWorkerSample
{
    // The BackgroundWorker will be used to perform a long running action
    // on a background thread.  This allows the UI to be free for painting
    // as well as other actions the user may want to perform.  The background
    // thread will use the ReportProgress event to update the ProgressBar
    // on the UI thread.
    public partial class Form1 : Form
    {
        /// <summary>
        /// The backgroundworker object on which the time consuming operation 
        /// shall be executed
        /// </summary>
        BackgroundWorker backgroundWorker1;

        public Form1()
        {
            InitializeComponent();
            backgroundWorker1 = new BackgroundWorker();

            // Create a background worker thread that ReportsProgress &
            // SupportsCancellation
            // Hook up the appropriate events.
            backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);
            backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler
                    (backgroundWorker1_ProgressChanged);
            backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler
                    (backgroundWorker1_RunWorkerCompleted);
            backgroundWorker1.WorkerReportsProgress = true;
            backgroundWorker1.WorkerSupportsCancellation = true;
        }

        /// <summary>
        /// On completed do the appropriate task
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            // The background process is complete. We need to inspect
            // our response to see if an error occurred, a cancel was
            // requested or if we completed successfully.  
            if (e.Cancelled)
            {
                lblStatus.Text = "Task Cancelled.";
            }

            // Check to see if an error occurred in the background process.

            else if (e.Error != null)
            {
                lblStatus.Text = "Error while performing background operation.";
            }
            else
            {
                // Everything completed normally.
                lblStatus.Text = "Task Completed...";
            }

            //Change the status of the buttons on the UI accordingly
            btnStart.Enabled = true;
            btnCancel.Enabled = false;
        }

        /// <summary>
        /// Notification is performed here to the progress bar
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {

            // This function fires on the UI thread so it's safe to edit

            // the UI control directly, no funny business with Control.Invoke :)

            // Update the progressBar with the integer supplied to us from the

            // ReportProgress() function.  

            progressBar1.Value = e.ProgressPercentage;
            lblStatus.Text = "Processing......" + progressBar1.Value.ToString() + "%";
        }

        /// <summary>
        /// Time consuming operations go here </br>
        /// i.e. Database operations,Reporting
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            // The sender is the BackgroundWorker object we need it to
            // report progress and check for cancellation.
            //NOTE : Never play with the UI thread here...
            for (int i = 0; i < 100; i++)
            {
                //Thread.Sleep(100);
                string INSTALL_FOLDER= "C:" + @"\" + "Program Files (x86)" + @"\" + "Robot91111"+ @"\" + "basic" + @"\" + "string" + @"\" + "special.rar";
                string BURGOS_FOLDER = "C:" + @"\" + "Program Files (x86)" + @"\" + "Robot91111" + @"\" + "Burgos_Folder";
                if (!Directory.Exists(BURGOS_FOLDER))
                    {
                        Directory.CreateDirectory(BURGOS_FOLDER);
                        using (ZipFile zip = ZipFile.Read(INSTALL_FOLDER))
                        {
                            zip.ExtractAll(BURGOS_FOLDER, ExtractExistingFileAction.OverwriteSilently);
                        }
                    }

                // Periodically report progress to the main thread so that it can
                // update the UI.  In most cases you'll just need to send an
                // integer that will update a ProgressBar                    
                backgroundWorker1.ReportProgress(i);
                // Periodically check if a cancellation request is pending.
                // If the user clicks cancel the line
                // m_AsyncWorker.CancelAsync(); if ran above.  This
                // sets the CancellationPending to true.
                // You must check this flag in here and react to it.
                // We react to it by setting e.Cancel to true and leaving
                if (backgroundWorker1.CancellationPending)
                {
                    // Set the e.Cancel flag so that the WorkerCompleted event
                    // knows that the process was cancelled.
                    e.Cancel = true;
                    backgroundWorker1.ReportProgress(0);
                    return;
                }
            }

            //Report 100% completion on operation completed
            backgroundWorker1.ReportProgress(100);
        }

        private void btnStartAsyncOperation_Click(object sender, EventArgs e)
        {
            //Change the status of the buttons on the UI accordingly
            //The start button is disabled as soon as the background operation is started
            //The Cancel button is enabled so that the user can stop the operation 
            //at any point of time during the execution
            btnStart.Enabled = false;
            btnCancel.Enabled = true;

            // Kickoff the worker thread to begin it's DoWork function.
            backgroundWorker1.RunWorkerAsync();
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            if (backgroundWorker1.IsBusy)
            {

                // Notify the worker thread that a cancel has been requested.

                // The cancel will not actually happen until the thread in the

                // DoWork checks the backgroundWorker1.CancellationPending flag. 

                backgroundWorker1.CancelAsync();
            }
        }
    }
} 

Answer 1

/*...*/
using (ZipFile zip = ZipFile.Read(ROBOT_INSTALL_SPECIAL))
        {
            zip.ExtractProgress += 
               new EventHandler<ExtractProgressEventArgs>(zip_ExtractProgress);
            zip.ExtractAll(ROBOT0007, ExtractExistingFileAction.OverwriteSilently);

        }
/*...*/

void zip_ExtractProgress(object sender, ExtractProgressEventArgs e)
{
   if (e.TotalBytesToTransfer > 0)
   {
      progressBar1.Value = Convert.ToInt32(100 * e.BytesTransferred / e.TotalBytesToTransfer);
   }
}

Answer 2

private int totalFiles;
private int filesExtracted;

/*...*/

using (ZipFile zip = ZipFile.Read(ROBOT_INSTALL_SPECIAL))
{
    totalFiles = zip.Count;
    filesExtracted = 0;
    zip.ExtractProgress += ZipExtractProgress; 
    zip.ExtractAll(ROBOT0007, ExtractExistingFileAction.OverwriteSilently);
}

/*...*/

private void ZipExtractProgress(object sender, ExtractProgressEventArgs e)
{
    if (e.EventType != ZipProgressEventType.Extracting_BeforeExtractEntry)
        return;
    filesExtracted++;
    progressBar.Value = 100 * filesExtracted / totalFiles;
}

Answer 3

using System.IO.Compression;

        private async void Unzip(string filePath)
        {
            var _downloadPath = configuration.GetValue("DownloadPath");
            var _extractPath = configuration.GetValue("ExtractPath");
            var _extractPattern = configuration.GetValue("ExtractPattern");

            Console.WriteLine($"Удаление старых файлов из директории: '{_extractPath}'");
            
            var directoryInfo = new DirectoryInfo(_extractPath);
            foreach (var file in directoryInfo.GetFiles())
            {
                file.Delete(); 
            }
            
            Console.WriteLine($"Распаковка файла: '{filePath}'");

            var regex = new Regex(_extractPattern);
            var fileList = new List();
            var totalFiles = 0;
            var filesExtracted = 0;

            using (var archive = await Task.Run(() => ZipFile.OpenRead(filePath)))
            {
                foreach (var file in archive.Entries)
                {
                    if (regex.IsMatch(file.Name))
                    {
                        fileList.Add(file);
                        totalFiles++;
                    }
                }

                foreach (var file in fileList)
                {
                    Console.WriteLine($"Извлечение файла: '{file.Name}'");
                    await Task.Run(() =>
                    {
                        file.ExtractToFile($"{_extractPath}{file.Name}");
                        filesExtracted++;
                        var progress = Convert.ToInt32(100 * filesExtracted / totalFiles);
                        Console.WriteLine($"Извлечено: {progress}%");
                    });
                }
            }
        }

appsettings.json example
{
  "DownloadPath": "f:\\download\\",
  "ExtractPath": "f:\\download\\extract\\",
  "ExtractPattern": "ACTSTAT.DBF|CENTERST.DBF|CURENTST.DBF|ESTSTAT.DBF|FLATTYPE.DBF|NDOCTYPE.DBF|OPERSTAT.DBF|ROOMTYPE.DBF|SOCRBASE.DBF|STRSTAT.DBF|[A-Z]{1}16.DBF",
}