C# - WinFrm应用程序调用SharpZipLib实现文件的压缩和解压缩

前言

本篇主要记录：VS2019 WinFrm桌面应用程序调用SharpZipLib，实现文件的简单压缩和解压缩功能。

SharpZipLib 开源地址戳这里。

准备工作

搭建WinFrm前台界面

添加必要的控件，这里主要应用到GroupBox、Label、TextBox、CheckBox和Button，如下图

核心代码

构造ZipHelper类

代码如下：

 using ICSharpCode.SharpZipLib.Checksum;
 using ICSharpCode.SharpZipLib.Zip;
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;

 namespace ZipUnzip
 {
     class ZipHelper
     {
         private string rootPath = string.Empty;

         #region 压缩  

         /// <summary>
         /// 递归压缩文件夹的内部方法
         /// </summary>
         /// <param name="folderToZip">要压缩的文件夹路径</param>
         /// <param name="zipStream">压缩输出流</param>
         /// <param name="parentFolderName">此文件夹的上级文件夹</param>
         /// <returns></returns>
         private bool ZipDirectory(string folderToZip, ZipOutputStream zipStream, string parentFolderName)
         {
             bool result = true;
             string[] folders, files;
             ZipEntry ent = null;
             FileStream fs = null;
             Crc32 crc = new Crc32();

             try
             {
                 string entName = folderToZip.Replace(this.rootPath, string.Empty) + "/";
                 //Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/")
                 ent = new ZipEntry(entName);
                 zipStream.PutNextEntry(ent);
                 zipStream.Flush();

                 files = Directory.GetFiles(folderToZip);
                 foreach (string file in files)
                 {
                     fs = File.OpenRead(file);

                     byte[] buffer = new byte[fs.Length];
                     fs.Read(buffer, , buffer.Length);
                     ent = new ZipEntry(entName + Path.GetFileName(file));
                     ent.DateTime = DateTime.Now;
                     ent.Size = fs.Length;

                     fs.Close();

                     crc.Reset();
                     crc.Update(buffer);

                     ent.Crc = crc.Value;
                     zipStream.PutNextEntry(ent);
                     zipStream.Write(buffer, , buffer.Length);
                 }

             }
             catch
             {
                 result = false;
             }
             finally
             {
                 if (fs != null)
                 {
                     fs.Close();
                     fs.Dispose();
                 }
                 if (ent != null)
                 {
                     ent = null;
                 }
                 GC.Collect();
                 GC.Collect();
             }

             folders = Directory.GetDirectories(folderToZip);
             foreach (string folder in folders)
                 if (!ZipDirectory(folder, zipStream, folderToZip))
                     return false;

             return result;
         }

         /// <summary>
         /// 压缩文件夹
         /// </summary>
         /// <param name="folderToZip">要压缩的文件夹路径</param>
         /// <param name="zipedFile">压缩文件完整路径</param>
         /// <param name="password">密码</param>
         /// <returns>是否压缩成功</returns>
         public bool ZipDirectory(string folderToZip, string zipedFile, string password)
         {
             bool result = false;
             if (!Directory.Exists(folderToZip))
                 return result;

             ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipedFile));
             zipStream.SetLevel();
             if (!string.IsNullOrEmpty(password)) zipStream.Password = password;

             result = ZipDirectory(folderToZip, zipStream, "");

             zipStream.Finish();
             zipStream.Close();

             return result;
         }

         /// <summary>
         /// 压缩文件夹
         /// </summary>
         /// <param name="folderToZip">要压缩的文件夹路径</param>
         /// <param name="zipedFile">压缩文件完整路径</param>
         /// <returns>是否压缩成功</returns>
         public bool ZipDirectory(string folderToZip, string zipedFile)
         {
             bool result = ZipDirectory(folderToZip, zipedFile, null);
             return result;
         }

         /// <summary>
         /// 压缩文件
         /// </summary>
         /// <param name="fileToZip">要压缩的文件全名</param>
         /// <param name="zipedFile">压缩后的文件名</param>
         /// <param name="password">密码</param>
         /// <returns>压缩结果</returns>
         public bool ZipFile(string fileToZip, string zipedFile, string password)
         {
             bool result = true;
             ZipOutputStream zipStream = null;
             FileStream fs = null;
             ZipEntry ent = null;

             if (!File.Exists(fileToZip))
                 return false;

             try
             {
                 fs = File.OpenRead(fileToZip);
                 byte[] buffer = new byte[fs.Length];
                 fs.Read(buffer, , buffer.Length);
                 fs.Close();

                 fs = File.Create(zipedFile);
                 zipStream = new ZipOutputStream(fs);
                 if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
                 ent = new ZipEntry(Path.GetFileName(fileToZip));
                 zipStream.PutNextEntry(ent);
                 zipStream.SetLevel();

                 zipStream.Write(buffer, , buffer.Length);

             }
             catch
             {
                 result = false;
             }
             finally
             {
                 if (zipStream != null)
                 {
                     zipStream.Finish();
                     zipStream.Close();
                 }
                 if (ent != null)
                 {
                     ent = null;
                 }
                 if (fs != null)
                 {
                     fs.Close();
                     fs.Dispose();
                 }
             }
             GC.Collect();
             GC.Collect();

             return result;
         }

         /// <summary>
         /// 压缩文件
         /// </summary>
         /// <param name="fileToZip">要压缩的文件全名</param>
         /// <param name="zipedFile">压缩后的文件名</param>
         /// <returns>压缩结果</returns>
         public bool ZipFile(string fileToZip, string zipedFile)
         {
             bool result = ZipFile(fileToZip, zipedFile, null);
             return result;
         }

         /// <summary>
         /// 压缩文件或文件夹
         /// </summary>
         /// <param name="fileToZip">要压缩的路径</param>
         /// <param name="zipedFile">压缩后的文件名</param>
         /// <param name="password">密码</param>
         /// <returns>压缩结果</returns>
         public bool Zip(string fileToZip, string zipedFile, string password)
         {
             bool result = false;
             if (Directory.Exists(fileToZip))
             {
                 this.rootPath = Path.GetDirectoryName(fileToZip);
                 result = ZipDirectory(fileToZip, zipedFile, password);
             }
             else if (File.Exists(fileToZip))
             {
                 this.rootPath = Path.GetDirectoryName(fileToZip);
                 result = ZipFile(fileToZip, zipedFile, password);
             }
             return result;
         }

         /// <summary>
         /// 压缩文件或文件夹
         /// </summary>
         /// <param name="fileToZip">要压缩的路径</param>
         /// <param name="zipedFile">压缩后的文件名</param>
         /// <returns>压缩结果</returns>
         public bool Zip(string fileToZip, string zipedFile)
         {
             bool result = Zip(fileToZip, zipedFile, null);
             return result;

         }

         #endregion

         #region 解压  

         /// <summary>
         /// 解压功能(解压压缩文件到指定目录)
         /// </summary>
         /// <param name="fileToUnZip">待解压的文件</param>
         /// <param name="zipedFolder">指定解压目标目录</param>
         /// <param name="password">密码</param>
         /// <returns>解压结果</returns>
         public bool UnZip(string fileToUnZip, string zipedFolder, string password)
         {
             bool result = true;
             FileStream fs = null;
             ZipInputStream zipStream = null;
             ZipEntry ent = null;
             string fileName;

             if (!File.Exists(fileToUnZip))
                 return false;

             if (!Directory.Exists(zipedFolder))
                 Directory.CreateDirectory(zipedFolder);

             try
             {
                 zipStream = new ZipInputStream(File.OpenRead(fileToUnZip));
                 if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
                 while ((ent = zipStream.GetNextEntry()) != null)
                 {
                     if (!string.IsNullOrEmpty(ent.Name))
                     {
                         fileName = Path.Combine(zipedFolder, ent.Name);
                         fileName = fileName.Replace('/', '\\');//change by Mr.HopeGi   

                         if (fileName.EndsWith("\\"))
                         {
                             Directory.CreateDirectory(fileName);
                             continue;
                         }

                         fs = File.Create(fileName);
                         int size = ;
                         byte[] data = new byte[size];
                         while (true)
                         {
                             size = zipStream.Read(data, , data.Length);
                             if (size > )
                                 fs.Write(data, , data.Length);
                             else
                                 break;
                         }
                     }
                 }
             }
             catch
             {
                 result = false;
             }
             finally
             {
                 if (fs != null)
                 {
                     fs.Close();
                     fs.Dispose();
                 }
                 if (zipStream != null)
                 {
                     zipStream.Close();
                     zipStream.Dispose();
                 }
                 if (ent != null)
                 {
                     ent = null;
                 }
                 GC.Collect();
                 GC.Collect();
             }
             return result;
         }

         /// <summary>
         /// 解压功能(解压压缩文件到指定目录)
         /// </summary>
         /// <param name="fileToUnZip">待解压的文件</param>
         /// <param name="zipedFolder">指定解压目标目录</param>
         /// <returns>解压结果</returns>
         public bool UnZip(string fileToUnZip, string zipedFolder)
         {
             bool result = UnZip(fileToUnZip, zipedFolder, null);
             return result;
         }

         #endregion
     }
 }

主窗体代码如下：

 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;

 namespace ZipUnzip
 {
     public partial class FrmMain : Form
     {
         public FrmMain()
         {
             InitializeComponent();
         }

         /// <summary>
         /// Unzip/Zip Operation
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void chbZip_CheckedChanged(object sender, EventArgs e)
         {
             if (this.chbZip.Checked)
             {
                 if (this.chbUnzip.Checked)
                 {
                     this.chbUnzip.Checked = false;
                 }
             }
         }

         /// <summary>
         /// Unzip/Zip Operation
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void chbUnzip_CheckedChanged(object sender, EventArgs e)
         {
             if (this.chbUnzip.Checked)
             {
                 if (this.chbZip.Checked)
                 {
                     this.chbZip.Checked = false;
                 }
             }
         }

         /// <summary>
         /// Choose File Directory
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnChoose_Click(object sender, EventArgs e)
         {
             if (this.chbZip.Checked)
             {
                 FolderBrowserDialog folderDialog = new FolderBrowserDialog();
                 folderDialog.Description = "Choose File Directory";
                 folderDialog.RootFolder = Environment.SpecialFolder.Desktop;
                 DialogResult dr = folderDialog.ShowDialog(this);
                 if (dr == DialogResult.OK)
                 {
                     this.txtSFP.Text = folderDialog.SelectedPath;
                 }
             }
             else if (this.chbUnzip.Checked)
             {
                 OpenFileDialog fileDialog = new OpenFileDialog();
                 fileDialog.Title = "Choose Zip Files";
                 fileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
                 DialogResult dr = fileDialog.ShowDialog(this);
                 if (dr == DialogResult.OK)
                 {
                     this.txtSFP.Text = fileDialog.FileName;
                 }
             }
         }

         /// <summary>
         /// Zip/Unzip
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnDo_Click(object sender, EventArgs e)
         {
             // Check
             if ((!this.chbZip.Checked) & (!this.chbUnzip.Checked))
             {
                 MessageBox.Show("Please choose operation type!", "Error");
                 return;
             }
             // Zip
             if (this.chbZip.Checked)
             {
                 try
                 {
                     string src = this.txtSFP.Text;
                     string dest = AppDomain.CurrentDomain.BaseDirectory + @"\zipfolder\ZIP" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".zip";
                     if (!Directory.Exists(Path.GetDirectoryName(dest)))
                     {
                         Directory.CreateDirectory(Path.GetDirectoryName(dest));
                     }
                     ZipHelper zipHelper = new ZipHelper();
                     bool flag = zipHelper.Zip(src, dest);
                     if (flag)
                     {
                         SaveFileDialog fileDialog = new SaveFileDialog();
                         fileDialog.Title = "Save Zip Package";
                         fileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
                         fileDialog.FileName = Path.GetFileName(dest);
                         if (fileDialog.ShowDialog() == DialogResult.OK)
                         {
                             File.Copy(dest, fileDialog.FileName, true);
                             this.txtDFP.Text = fileDialog.FileName;
                         }
                         MessageBox.Show(this, "Zip Success!", "Info", MessageBoxButtons.OK);
                     }
                     else
                     {
                         MessageBox.Show(this, "Zip Failed", "Error", MessageBoxButtons.OK);
                     }
                 }
                 catch (Exception ex)
                 {
                     MessageBox.Show("Zip Failed, Err info[" + ex.Message + "]", "Error");
                 }

             }

             // Unzip
             if (this.chbUnzip.Checked)
             {
                 try
                 {
                     FolderBrowserDialog folderDialog = new FolderBrowserDialog();
                     folderDialog.Description = "Choose Unzip Directory";
                     folderDialog.RootFolder = Environment.SpecialFolder.Desktop;
                     DialogResult dr = folderDialog.ShowDialog(this);
                     if (dr == DialogResult.OK)
                     {
                         string destPath = folderDialog.SelectedPath + @"\" + Path.GetFileNameWithoutExtension(this.txtDFP.Text);
                         ZipHelper zipHelper = new ZipHelper();
                         zipHelper.UnZip(this.txtSFP.Text, destPath);
                         this.txtDFP.Text = destPath;
                     }
                     MessageBox.Show("Unzip Success!", "Info");
                 }
                 catch (Exception ex)
                 {
                     MessageBox.Show("Unzip Failed, Err info[" + ex.Message + "]", "Error");
                 }

             }
         }
     }
 }

实现效果

作者：Jeremy.Wu
  出处：https://www.cnblogs.com/jeremywucnblog/

  本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。