任何人都可以告诉我是否有可能(并举例说明)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"提取的ZIP文件的进度(Ionic.zip,http ://dotnetzip.codeplex.com/)？
我的WinForm在将我选择的路径中的ZIP文件提取到新路径方面做得非常出色,完全不用担心使用文本框和浏览按钮以及所有爵士乐......但唯一的问题是我在此期间无法在我的表单上使用任何内容它好像已经冻结了,但它只是因为它在后台解压缩ZIP文件.
ZIP文件是一个大文件,我想通过添加和显示如何使用准确的ETA进行解压缩进度条来减少对正在发生的事情的混淆.
当然这是可能的,我只是无法弄清楚如何在C#WinForms中做到这一点,我在网络上有一个相当不错的外观,但没有真正能够遇到一个我能找到适合我的例子.
这是我所拥有的一个粗略的例子:
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11月4日):我已经删除了文本框,现在又回到了简单的基础知识,下面的工作与后台工作者一起工作,但是取消按钮对RAR文件没有影响...任何建议？
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();
}
}
}
}
/*...*/
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);
}
}