Managed C++ wrapper for ZLib

/*
DevelopDotNet
http://www.developdotnet.com

File Created by: Alberto Ferrazzoli
Date: 22/05/2004

Class Description:
ZTest test application for DevelopDotnet.Compressor type library.

Notes:

Revision Log - Please mark significant changes in source code in the following format:

Date  -  Time -  Reviewer  -			Comments
15/06/2004		 Alberto Ferrazzoli		Added ZCompressor Test
19/06/2004		 Alberto Ferrazzoli		Added CRC Test
07/08/2004		 Alberto Ferrazzoli		Zip Progress on status bar
*/

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;
using System.Diagnostics;
using System.IO;
using System.Text;

using System.Runtime.Serialization.Formatters.Binary;
using DevelopDotNet.Compression;

namespace ZTest
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>

	public class ZTest : System.Windows.Forms.Form
	{
		private double _FN1;
		private double _FN2;
		private const string _sFibonacci = @"Fibonacci.dat";

		private ZipArchive _archive;
		private int _totalFilesFound;
		private bool _isMmoryZip;
		ProgressBar _progressBar;

		private Byte [] _compressedData;

		private MenuItem mnuLevel , mnuStrategy;
		private System.ComponentModel.IContainer components;

		#region Windows Form Components

		private System.Windows.Forms.MenuItem mnuFile;
		private System.Windows.Forms.MenuItem mnuFileExit;
		private System.Windows.Forms.MenuItem mnuHelp;
		private System.Windows.Forms.MenuItem mnuHelpAbout;
		private System.Windows.Forms.TabPage tabZStream;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.TabPage tabCompressor;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox txtData;
		private System.Windows.Forms.Button btnUncompress;
		private System.Windows.Forms.Button btnCompress;
		private System.Windows.Forms.StatusBar statusBar;
		private System.Windows.Forms.MenuItem mnuCompression;
		private System.Windows.Forms.MenuItem mnuCompressionLevel;
		private System.Windows.Forms.Splitter splitter1;
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.Button btnSave;
		private System.Windows.Forms.Button btnLoad;
		private System.Windows.Forms.Button btnGenerate;
		private System.Windows.Forms.TextBox txtOut;
		private System.Windows.Forms.MainMenu mainMenu;
		private System.Windows.Forms.TabControl tabControl;
		private System.Windows.Forms.TabPage tabCrc;
		private System.Windows.Forms.Button btnAdler;
		private System.Windows.Forms.Button btnCrc;
		private System.Windows.Forms.Label lblAdler;
		private System.Windows.Forms.Label lblCrc;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TabPage tabZip;
		private System.Windows.Forms.ImageList imglZipToolbar;
		private System.Windows.Forms.FolderBrowserDialog folderBrowserDialog;
		private System.Windows.Forms.TextBox txtComment;
		private System.Windows.Forms.Splitter splitter2;
		private System.Windows.Forms.Panel panelZipFiles;
		private System.Windows.Forms.ListView lvwZipFiles;
		private System.Windows.Forms.ToolBar toolBarZip;
		private System.Windows.Forms.ColumnHeader clhZipName;
		private System.Windows.Forms.ToolBarButton tlbSetPassword;
		private System.Windows.Forms.ToolBarButton tlbRemove;
		private System.Windows.Forms.ToolBarButton tlbExtractTo;
		private System.Windows.Forms.ToolBarButton tlbAddComment;
		private System.Windows.Forms.ToolBarButton tlbZipTest;
		private System.Windows.Forms.ColumnHeader clhZipSize;
		private System.Windows.Forms.ColumnHeader clhZipSizePacked;
		private System.Windows.Forms.ColumnHeader clhZipDateModified;
		private System.Windows.Forms.ColumnHeader clhZipCRC32;
		private System.Windows.Forms.StatusBarPanel statusBarPanel1;
		private System.Windows.Forms.StatusBarPanel statusBarPanel2;
		private System.Windows.Forms.ColumnHeader clhZipCompressRatio;
		private System.Windows.Forms.ColumnHeader clhZipComment;
		private System.Windows.Forms.ContextMenu cmnuZipFiles;
		private System.Windows.Forms.MenuItem cmnuZipFilesComment;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem cmnuZipFilesTest;
		private System.Windows.Forms.MenuItem cmnuZipFilesRemove;
		private System.Windows.Forms.MenuItem cmnuOpenMemory;
		private System.Windows.Forms.ToolBarButton tlbOpen;
		private System.Windows.Forms.ToolBarButton tlbAdd;
		private System.Windows.Forms.ToolBarButton tlbNew;
		private System.Windows.Forms.Button btnBrowseIn;
		private System.Windows.Forms.TextBox txtFileIn;
		private System.Windows.Forms.ContextMenu cmnuNewZip;
		private System.Windows.Forms.MenuItem mnuCompressionStrategy;
		#endregion

		public ZTest()
		{
			//
			// Required for Windows Form Designer support
			//

			InitializeComponent();

			#region Initialize Menus
			EventHandler handlerLevel = new EventHandler(OnCompressionLevelClick);

			foreach(CompressionLevel level in Enum.GetValues(typeof(CompressionLevel)))
			{
				MenuItem mitem = new MenuItem(level.ToString(), handlerLevel);
				mitem.RadioCheck = true;
				mnuCompressionLevel.MenuItems.Add(mitem);
			}

			mnuLevel = mnuCompressionLevel.MenuItems[3];
			mnuLevel.Checked = true;

			EventHandler handlerStrategy = new EventHandler(OnCompressionStrategyClick);

			foreach(CompressionStrategy strategy in Enum.GetValues(typeof(CompressionStrategy)))
			{
				MenuItem mitem = new MenuItem(strategy.ToString(), handlerStrategy);
				mitem.RadioCheck = true;
				mnuCompressionStrategy.MenuItems.Add(mitem);
			}

			mnuStrategy = mnuCompressionStrategy.MenuItems[0];
			mnuStrategy.Checked = true;
			#endregion

			//_progress = 0;
			_progressBar = new ProgressBar();
			statusBar.Controls.Add(_progressBar);
			UpdateStatusBar();
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}

			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code

		/// <summary>

		/// Required method for Designer support - do not modify

		/// the contents of this method with the code editor.

		/// </summary>

		private void InitializeComponent()

		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(ZTest));
			this.mainMenu = new System.Windows.Forms.MainMenu();
			this.mnuFile = new System.Windows.Forms.MenuItem();
			this.mnuFileExit = new System.Windows.Forms.MenuItem();
			this.mnuCompression = new System.Windows.Forms.MenuItem();
			this.mnuCompressionLevel = new System.Windows.Forms.MenuItem();
			this.mnuCompressionStrategy = new System.Windows.Forms.MenuItem();
			this.mnuHelp = new System.Windows.Forms.MenuItem();
			this.mnuHelpAbout = new System.Windows.Forms.MenuItem();
			this.statusBar = new System.Windows.Forms.StatusBar();
			this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel();
			this.statusBarPanel2 = new System.Windows.Forms.StatusBarPanel();
			this.tabControl = new System.Windows.Forms.TabControl();
			this.tabCompressor = new System.Windows.Forms.TabPage();
			this.label3 = new System.Windows.Forms.Label();
			this.txtData = new System.Windows.Forms.TextBox();
			this.btnUncompress = new System.Windows.Forms.Button();
			this.btnCompress = new System.Windows.Forms.Button();
			this.tabZStream = new System.Windows.Forms.TabPage();
			this.panel1 = new System.Windows.Forms.Panel();
			this.txtOut = new System.Windows.Forms.TextBox();
			this.btnSave = new System.Windows.Forms.Button();
			this.btnLoad = new System.Windows.Forms.Button();
			this.btnGenerate = new System.Windows.Forms.Button();
			this.splitter1 = new System.Windows.Forms.Splitter();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.tabCrc = new System.Windows.Forms.TabPage();
			this.label1 = new System.Windows.Forms.Label();
			this.lblCrc = new System.Windows.Forms.Label();
			this.lblAdler = new System.Windows.Forms.Label();
			this.btnBrowseIn = new System.Windows.Forms.Button();
			this.btnCrc = new System.Windows.Forms.Button();
			this.txtFileIn = new System.Windows.Forms.TextBox();
			this.btnAdler = new System.Windows.Forms.Button();
			this.tabZip = new System.Windows.Forms.TabPage();
			this.panelZipFiles = new System.Windows.Forms.Panel();
			this.lvwZipFiles = new System.Windows.Forms.ListView();
			this.clhZipName = new System.Windows.Forms.ColumnHeader();
			this.clhZipSize = new System.Windows.Forms.ColumnHeader();
			this.clhZipSizePacked = new System.Windows.Forms.ColumnHeader();
			this.clhZipCompressRatio = new System.Windows.Forms.ColumnHeader();
			this.clhZipDateModified = new System.Windows.Forms.ColumnHeader();
			this.clhZipCRC32 = new System.Windows.Forms.ColumnHeader();
			this.clhZipComment = new System.Windows.Forms.ColumnHeader();
			this.cmnuZipFiles = new System.Windows.Forms.ContextMenu();
			this.cmnuZipFilesComment = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.cmnuZipFilesRemove = new System.Windows.Forms.MenuItem();
			this.cmnuZipFilesTest = new System.Windows.Forms.MenuItem();
			this.toolBarZip = new System.Windows.Forms.ToolBar();
			this.tlbNew = new System.Windows.Forms.ToolBarButton();
			this.cmnuNewZip = new System.Windows.Forms.ContextMenu();
			this.cmnuOpenMemory = new System.Windows.Forms.MenuItem();
			this.tlbOpen = new System.Windows.Forms.ToolBarButton();
			this.tlbAdd = new System.Windows.Forms.ToolBarButton();
			this.tlbRemove = new System.Windows.Forms.ToolBarButton();
			this.tlbExtractTo = new System.Windows.Forms.ToolBarButton();
			this.tlbAddComment = new System.Windows.Forms.ToolBarButton();
			this.tlbZipTest = new System.Windows.Forms.ToolBarButton();
			this.tlbSetPassword = new System.Windows.Forms.ToolBarButton();
			this.imglZipToolbar = new System.Windows.Forms.ImageList(this.components);
			this.splitter2 = new System.Windows.Forms.Splitter();
			this.txtComment = new System.Windows.Forms.TextBox();
			this.folderBrowserDialog = new System.Windows.Forms.FolderBrowserDialog();
			((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.statusBarPanel2)).BeginInit();
			this.tabControl.SuspendLayout();
			this.tabCompressor.SuspendLayout();
			this.tabZStream.SuspendLayout();
			this.panel1.SuspendLayout();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.tabCrc.SuspendLayout();
			this.tabZip.SuspendLayout();
			this.panelZipFiles.SuspendLayout();
			this.SuspendLayout();
			// 
			// mainMenu
			// 
			this.mainMenu.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					 this.mnuFile,
																					 this.mnuCompression,
																					 this.mnuHelp});
			// 
			// mnuFile
			// 
			this.mnuFile.Index = 0;
			this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					this.mnuFileExit});
			this.mnuFile.Text = "&File";
			// 
			// mnuFileExit
			// 
			this.mnuFileExit.Index = 0;
			this.mnuFileExit.Text = "E&xit";
			this.mnuFileExit.Click += new System.EventHandler(this.mnuFileExit_Click);
			// 
			// mnuCompression
			// 
			this.mnuCompression.Index = 1;
			this.mnuCompression.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						   this.mnuCompressionLevel,
																						   this.mnuCompressionStrategy});
			this.mnuCompression.Text = "&Compression";
			// 
			// mnuCompressionLevel
			// 
			this.mnuCompressionLevel.Index = 0;
			this.mnuCompressionLevel.Text = "Level";
			// 
			// mnuCompressionStrategy
			// 
			this.mnuCompressionStrategy.Index = 1;
			this.mnuCompressionStrategy.Text = "Strategy";
			// 
			// mnuHelp
			// 
			this.mnuHelp.Index = 2;
			this.mnuHelp.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					this.mnuHelpAbout});
			this.mnuHelp.Text = "&Help";
			// 
			// mnuHelpAbout
			// 
			this.mnuHelpAbout.Index = 0;
			this.mnuHelpAbout.Text = "About...";
			this.mnuHelpAbout.Click += new System.EventHandler(this.mnuHelpAbout_Click);
			// 
			// statusBar
			// 
			this.statusBar.Location = new System.Drawing.Point(0, 355);
			this.statusBar.Name = "statusBar";
			this.statusBar.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] {
																						 this.statusBarPanel1,
																						 this.statusBarPanel2});
			this.statusBar.ShowPanels = true;
			this.statusBar.Size = new System.Drawing.Size(408, 22);
			this.statusBar.TabIndex = 2;
			this.statusBar.Layout += new System.Windows.Forms.LayoutEventHandler(this.StatusBarLayout);
			// 
			// statusBarPanel1
			// 
			this.statusBarPanel1.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Contents;
			this.statusBarPanel1.MinWidth = 150;
			this.statusBarPanel1.Width = 150;
			// 
			// statusBarPanel2
			// 
			this.statusBarPanel2.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Spring;
			this.statusBarPanel2.BorderStyle = System.Windows.Forms.StatusBarPanelBorderStyle.None;
			this.statusBarPanel2.Width = 242;
			// 
			// tabControl
			// 
			this.tabControl.Controls.Add(this.tabCompressor);
			this.tabControl.Controls.Add(this.tabZStream);
			this.tabControl.Controls.Add(this.tabCrc);
			this.tabControl.Controls.Add(this.tabZip);
			this.tabControl.Dock = System.Windows.Forms.DockStyle.Fill;
			this.tabControl.ItemSize = new System.Drawing.Size(52, 18);
			this.tabControl.Location = new System.Drawing.Point(0, 0);
			this.tabControl.Name = "tabControl";
			this.tabControl.SelectedIndex = 0;
			this.tabControl.Size = new System.Drawing.Size(408, 355);
			this.tabControl.TabIndex = 10;
			// 
			// tabCompressor
			// 
			this.tabCompressor.Controls.Add(this.label3);
			this.tabCompressor.Controls.Add(this.txtData);
			this.tabCompressor.Controls.Add(this.btnUncompress);
			this.tabCompressor.Controls.Add(this.btnCompress);
			this.tabCompressor.Location = new System.Drawing.Point(4, 22);
			this.tabCompressor.Name = "tabCompressor";
			this.tabCompressor.Size = new System.Drawing.Size(400, 329);
			this.tabCompressor.TabIndex = 1;
			this.tabCompressor.Text = "Compressor";
			this.tabCompressor.Visible = false;
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(8, 8);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(100, 16);
			this.label3.TabIndex = 7;
			this.label3.Text = "Data:";
			// 
			// txtData
			// 
			this.txtData.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.txtData.Location = new System.Drawing.Point(8, 24);
			this.txtData.Multiline = true;
			this.txtData.Name = "txtData";
			this.txtData.Size = new System.Drawing.Size(384, 264);
			this.txtData.TabIndex = 4;
			this.txtData.Text = "";
			// 
			// btnUncompress
			// 
			this.btnUncompress.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.btnUncompress.Location = new System.Drawing.Point(304, 296);
			this.btnUncompress.Name = "btnUncompress";
			this.btnUncompress.Size = new System.Drawing.Size(81, 23);
			this.btnUncompress.TabIndex = 6;
			this.btnUncompress.Text = "Uncompress";
			this.btnUncompress.Click += new System.EventHandler(this.btnUncompress_Click);
			// 
			// btnCompress
			// 
			this.btnCompress.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.btnCompress.Location = new System.Drawing.Point(216, 296);
			this.btnCompress.Name = "btnCompress";
			this.btnCompress.Size = new System.Drawing.Size(81, 23);
			this.btnCompress.TabIndex = 5;
			this.btnCompress.Text = "Compress";
			this.btnCompress.Click += new System.EventHandler(this.btnCompress_Click);
			// 
			// tabZStream
			// 
			this.tabZStream.Controls.Add(this.panel1);
			this.tabZStream.Controls.Add(this.splitter1);
			this.tabZStream.Controls.Add(this.dataGrid1);
			this.tabZStream.Location = new System.Drawing.Point(4, 22);
			this.tabZStream.Name = "tabZStream";
			this.tabZStream.Size = new System.Drawing.Size(400, 329);
			this.tabZStream.TabIndex = 0;
			this.tabZStream.Text = "ZStream";
			// 
			// panel1
			// 
			this.panel1.Controls.Add(this.txtOut);
			this.panel1.Controls.Add(this.btnSave);
			this.panel1.Controls.Add(this.btnLoad);
			this.panel1.Controls.Add(this.btnGenerate);
			this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.panel1.Location = new System.Drawing.Point(0, 163);
			this.panel1.Name = "panel1";
			this.panel1.Size = new System.Drawing.Size(400, 166);
			this.panel1.TabIndex = 9;
			// 
			// txtOut
			// 
			this.txtOut.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.txtOut.Location = new System.Drawing.Point(0, 0);
			this.txtOut.Multiline = true;
			this.txtOut.Name = "txtOut";
			this.txtOut.ReadOnly = true;
			this.txtOut.Size = new System.Drawing.Size(400, 120);
			this.txtOut.TabIndex = 11;
			this.txtOut.TabStop = false;
			this.txtOut.Text = "";
			// 
			// btnSave
			// 
			this.btnSave.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.btnSave.Location = new System.Drawing.Point(224, 132);
			this.btnSave.Name = "btnSave";
			this.btnSave.Size = new System.Drawing.Size(81, 23);
			this.btnSave.TabIndex = 9;
			this.btnSave.Text = "Save";
			this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
			// 
			// btnLoad
			// 
			this.btnLoad.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.btnLoad.Location = new System.Drawing.Point(312, 132);
			this.btnLoad.Name = "btnLoad";
			this.btnLoad.Size = new System.Drawing.Size(81, 23);
			this.btnLoad.TabIndex = 10;
			this.btnLoad.Text = "Load";
			this.btnLoad.Click += new System.EventHandler(this.btnLoad_Click);
			// 
			// btnGenerate
			// 
			this.btnGenerate.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.btnGenerate.Location = new System.Drawing.Point(136, 132);
			this.btnGenerate.Name = "btnGenerate";
			this.btnGenerate.Size = new System.Drawing.Size(81, 23);
			this.btnGenerate.TabIndex = 8;
			this.btnGenerate.Text = "Generate";
			this.btnGenerate.Click += new System.EventHandler(this.btnGenerate_Click);
			// 
			// splitter1
			// 
			this.splitter1.Dock = System.Windows.Forms.DockStyle.Top;
			this.splitter1.Location = new System.Drawing.Point(0, 160);
			this.splitter1.Name = "splitter1";
			this.splitter1.Size = new System.Drawing.Size(400, 3);
			this.splitter1.TabIndex = 8;
			this.splitter1.TabStop = false;
			// 
			// dataGrid1
			// 
			this.dataGrid1.CaptionText = "Fibonacci\'s series";
			this.dataGrid1.DataMember = "";
			this.dataGrid1.Dock = System.Windows.Forms.DockStyle.Top;
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(0, 0);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(400, 160);
			this.dataGrid1.TabIndex = 4;
			// 
			// tabCrc
			// 
			this.tabCrc.Controls.Add(this.label1);
			this.tabCrc.Controls.Add(this.lblCrc);
			this.tabCrc.Controls.Add(this.lblAdler);
			this.tabCrc.Controls.Add(this.btnBrowseIn);
			this.tabCrc.Controls.Add(this.btnCrc);
			this.tabCrc.Controls.Add(this.txtFileIn);
			this.tabCrc.Controls.Add(this.btnAdler);
			this.tabCrc.Location = new System.Drawing.Point(4, 22);
			this.tabCrc.Name = "tabCrc";
			this.tabCrc.Size = new System.Drawing.Size(400, 329);
			this.tabCrc.TabIndex = 2;
			this.tabCrc.Text = "CRC";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 8);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(100, 16);
			this.label1.TabIndex = 6;
			this.label1.Text = "Input File:";
			// 
			// lblCrc
			// 
			this.lblCrc.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.lblCrc.Location = new System.Drawing.Point(16, 96);
			this.lblCrc.Name = "lblCrc";
			this.lblCrc.Size = new System.Drawing.Size(216, 16);
			this.lblCrc.TabIndex = 5;
			// 
			// lblAdler
			// 
			this.lblAdler.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.lblAdler.Location = new System.Drawing.Point(16, 64);
			this.lblAdler.Name = "lblAdler";
			this.lblAdler.Size = new System.Drawing.Size(216, 16);
			this.lblAdler.TabIndex = 4;
			// 
			// btnBrowseIn
			// 
			this.btnBrowseIn.Location = new System.Drawing.Point(296, 27);
			this.btnBrowseIn.Name = "btnBrowseIn";
			this.btnBrowseIn.Size = new System.Drawing.Size(16, 16);
			this.btnBrowseIn.TabIndex = 1;
			this.btnBrowseIn.Text = "...";
			this.btnBrowseIn.Click += new System.EventHandler(this.btnBrowseIn_Click);
			// 
			// btnCrc
			// 
			this.btnCrc.Location = new System.Drawing.Point(248, 93);
			this.btnCrc.Name = "btnCrc";
			this.btnCrc.Size = new System.Drawing.Size(81, 23);
			this.btnCrc.TabIndex = 3;
			this.btnCrc.Text = "CRC32";
			this.btnCrc.Click += new System.EventHandler(this.btnCrc_Click);
			// 
			// txtFileIn
			// 
			this.txtFileIn.Location = new System.Drawing.Point(16, 25);
			this.txtFileIn.Name = "txtFileIn";
			this.txtFileIn.Size = new System.Drawing.Size(272, 20);
			this.txtFileIn.TabIndex = 0;
			this.txtFileIn.Text = "";
			// 
			// btnAdler
			// 
			this.btnAdler.Location = new System.Drawing.Point(248, 61);
			this.btnAdler.Name = "btnAdler";
			this.btnAdler.Size = new System.Drawing.Size(81, 23);
			this.btnAdler.TabIndex = 2;
			this.btnAdler.Text = "Adler32";
			this.btnAdler.Click += new System.EventHandler(this.btnAdler_Click);
			// 
			// tabZip
			// 
			this.tabZip.Controls.Add(this.panelZipFiles);
			this.tabZip.Controls.Add(this.splitter2);
			this.tabZip.Controls.Add(this.txtComment);
			this.tabZip.Location = new System.Drawing.Point(4, 22);
			this.tabZip.Name = "tabZip";
			this.tabZip.Size = new System.Drawing.Size(400, 329);
			this.tabZip.TabIndex = 3;
			this.tabZip.Text = "Zip";
			// 
			// panelZipFiles
			// 
			this.panelZipFiles.Controls.Add(this.lvwZipFiles);
			this.panelZipFiles.Controls.Add(this.toolBarZip);
			this.panelZipFiles.Cursor = System.Windows.Forms.Cursors.Default;
			this.panelZipFiles.Dock = System.Windows.Forms.DockStyle.Fill;
			this.panelZipFiles.Location = new System.Drawing.Point(0, 0);
			this.panelZipFiles.Name = "panelZipFiles";
			this.panelZipFiles.Size = new System.Drawing.Size(400, 262);
			this.panelZipFiles.TabIndex = 21;
			// 
			// lvwZipFiles
			// 
			this.lvwZipFiles.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																						  this.clhZipName,
																						  this.clhZipSize,
																						  this.clhZipSizePacked,
																						  this.clhZipCompressRatio,
																						  this.clhZipDateModified,
																						  this.clhZipCRC32,
																						  this.clhZipComment});
			this.lvwZipFiles.ContextMenu = this.cmnuZipFiles;
			this.lvwZipFiles.Dock = System.Windows.Forms.DockStyle.Fill;
			this.lvwZipFiles.FullRowSelect = true;
			this.lvwZipFiles.Location = new System.Drawing.Point(0, 58);
			this.lvwZipFiles.Name = "lvwZipFiles";
			this.lvwZipFiles.Size = new System.Drawing.Size(400, 204);
			this.lvwZipFiles.TabIndex = 18;
			this.lvwZipFiles.View = System.Windows.Forms.View.Details;
			// 
			// clhZipName
			// 
			this.clhZipName.Text = "Name";
			this.clhZipName.Width = 180;
			// 
			// clhZipSize
			// 
			this.clhZipSize.Text = "Size";
			// 
			// clhZipSizePacked
			// 
			this.clhZipSizePacked.Text = "Packed";
			// 
			// clhZipCompressRatio
			// 
			this.clhZipCompressRatio.Text = "Ratio";
			// 
			// clhZipDateModified
			// 
			this.clhZipDateModified.Text = "Modified";
			this.clhZipDateModified.Width = 130;
			// 
			// clhZipCRC32
			// 
			this.clhZipCRC32.Text = "CRC32";
			this.clhZipCRC32.Width = 80;
			// 
			// clhZipComment
			// 
			this.clhZipComment.Text = "Comment";
			this.clhZipComment.Width = 160;
			// 
			// cmnuZipFiles
			// 
			this.cmnuZipFiles.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						 this.cmnuZipFilesComment,
																						 this.menuItem4,
																						 this.cmnuZipFilesRemove,
																						 this.cmnuZipFilesTest});
			// 
			// cmnuZipFilesComment
			// 
			this.cmnuZipFilesComment.Index = 0;
			this.cmnuZipFilesComment.Text = "Comment";
			this.cmnuZipFilesComment.Click += new System.EventHandler(this.cmnuZipFilesComment_Click);
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 1;
			this.menuItem4.Text = "-";
			// 
			// cmnuZipFilesRemove
			// 
			this.cmnuZipFilesRemove.Index = 2;
			this.cmnuZipFilesRemove.Text = "Remove";
			this.cmnuZipFilesRemove.Click += new System.EventHandler(this.cmnuZipFilesRemove_Click);
			// 
			// cmnuZipFilesTest
			// 
			this.cmnuZipFilesTest.Index = 3;
			this.cmnuZipFilesTest.Text = "Test";
			this.cmnuZipFilesTest.Click += new System.EventHandler(this.cmnuZipFilesTest_Click);
			// 
			// toolBarZip
			// 
			this.toolBarZip.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
			this.toolBarZip.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
																						  this.tlbNew,
																						  this.tlbOpen,
																						  this.tlbAdd,
																						  this.tlbRemove,
																						  this.tlbExtractTo,
																						  this.tlbAddComment,
																						  this.tlbZipTest,
																						  this.tlbSetPassword});
			this.toolBarZip.ButtonSize = new System.Drawing.Size(32, 32);
			this.toolBarZip.DropDownArrows = true;
			this.toolBarZip.ImageList = this.imglZipToolbar;
			this.toolBarZip.Location = new System.Drawing.Point(0, 0);
			this.toolBarZip.Name = "toolBarZip";
			this.toolBarZip.ShowToolTips = true;
			this.toolBarZip.Size = new System.Drawing.Size(400, 58);
			this.toolBarZip.TabIndex = 17;
			this.toolBarZip.Wrappable = false;
			this.toolBarZip.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBarZip_ButtonClick);
			// 
			// tlbNew
			// 
			this.tlbNew.DropDownMenu = this.cmnuNewZip;
			this.tlbNew.ImageIndex = 0;
			this.tlbNew.Style = System.Windows.Forms.ToolBarButtonStyle.DropDownButton;
			this.tlbNew.Text = "New";
			// 
			// cmnuNewZip
			// 
			this.cmnuNewZip.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					   this.cmnuOpenMemory});
			// 
			// cmnuOpenMemory
			// 
			this.cmnuOpenMemory.Index = 0;
			this.cmnuOpenMemory.RadioCheck = true;
			this.cmnuOpenMemory.Text = "Memory";
			this.cmnuOpenMemory.Click += new System.EventHandler(this.cmnuOpenMemory_Click);
			// 
			// tlbOpen
			// 
			this.tlbOpen.ImageIndex = 1;
			this.tlbOpen.Text = "Open";
			// 
			// tlbAdd
			// 
			this.tlbAdd.ImageIndex = 2;
			this.tlbAdd.Text = "Add";
			// 
			// tlbRemove
			// 
			this.tlbRemove.ImageIndex = 3;
			this.tlbRemove.Text = "Remove";
			// 
			// tlbExtractTo
			// 
			this.tlbExtractTo.ImageIndex = 4;
			this.tlbExtractTo.Text = "ExtractTo";
			// 
			// tlbAddComment
			// 
			this.tlbAddComment.ImageIndex = 7;
			this.tlbAddComment.Text = "Comment";
			// 
			// tlbZipTest
			// 
			this.tlbZipTest.ImageIndex = 5;
			this.tlbZipTest.Text = "Test";
			// 
			// tlbSetPassword
			// 
			this.tlbSetPassword.ImageIndex = 6;
			this.tlbSetPassword.Text = "Password";
			this.tlbSetPassword.Visible = false;
			// 
			// imglZipToolbar
			// 
			this.imglZipToolbar.ColorDepth = System.Windows.Forms.ColorDepth.Depth32Bit;
			this.imglZipToolbar.ImageSize = new System.Drawing.Size(32, 32);
			this.imglZipToolbar.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imglZipToolbar.ImageStream")));
			this.imglZipToolbar.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// splitter2
			// 
			this.splitter2.Dock = System.Windows.Forms.DockStyle.Bottom;
			this.splitter2.Location = new System.Drawing.Point(0, 262);
			this.splitter2.Name = "splitter2";
			this.splitter2.Size = new System.Drawing.Size(400, 3);
			this.splitter2.TabIndex = 20;
			this.splitter2.TabStop = false;
			// 
			// txtComment
			// 
			this.txtComment.Dock = System.Windows.Forms.DockStyle.Bottom;
			this.txtComment.Location = new System.Drawing.Point(0, 265);
			this.txtComment.Multiline = true;
			this.txtComment.Name = "txtComment";
			this.txtComment.ReadOnly = true;
			this.txtComment.Size = new System.Drawing.Size(400, 64);
			this.txtComment.TabIndex = 19;
			this.txtComment.Text = "";
			this.txtComment.Visible = false;
			// 
			// ZTest
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(408, 377);
			this.Controls.Add(this.tabControl);
			this.Controls.Add(this.statusBar);
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.Menu = this.mainMenu;
			this.MinimumSize = new System.Drawing.Size(360, 390);
			this.Name = "ZTest";
			this.Text = "ZTest";
			((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.statusBarPanel2)).EndInit();
			this.tabControl.ResumeLayout(false);
			this.tabCompressor.ResumeLayout(false);
			this.tabZStream.ResumeLayout(false);
			this.panel1.ResumeLayout(false);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.tabCrc.ResumeLayout(false);
			this.tabZip.ResumeLayout(false);
			this.panelZipFiles.ResumeLayout(false);
			this.ResumeLayout(false);

		}

		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>

		[STAThread]

		static void Main() 
		{
			Application.Run(new ZTest());
		}

		#region Helper Functions

		private float CompressRatio(long sizeUncompressed, long sizeCompressed)
		{
			if(sizeUncompressed > 0)
			{
				return ((float)(sizeUncompressed - sizeCompressed) * 100) / sizeUncompressed;
			}
			return 0;
		}

		#endregion

		#region Menu Event Handlers
		private void mnuFileExit_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void mnuHelpAbout_Click(object sender, System.EventArgs e)
		{
			About dlg = new About();
			dlg.ShowDialog();
		}

		private void OnCompressionLevelClick(object sender, EventArgs args)
		{
			mnuLevel.Checked = false;
			mnuLevel = (MenuItem) sender;
			mnuLevel.Checked = true;

			UpdateStatusBar();
		}

		private void OnCompressionStrategyClick(object sender, EventArgs args)
		{
			mnuStrategy.Checked = false;
			mnuStrategy = (MenuItem) sender;
			mnuStrategy.Checked = true;

			UpdateStatusBar();
		}
		#endregion

		#region Status Bar
		private void StatusBarLayout(object sender, LayoutEventArgs e)
		{
			if(_progressBar != null)
			{
				if(statusBar.Panels.Count >= 2)
				{
					Rectangle bounds = new Rectangle(new Point(statusBar.Panels[0].Width, 1), new Size(statusBar.Panels[1].Width, statusBar.Height));
					bounds.Inflate(-2, -1);
					_progressBar.Bounds = bounds;
				}
			}
		}

		private void UpdateStatusBar()
		{
			StatusBarPanel panel = statusBar.Panels[0];
			panel.Text = "Level: " + mnuLevel.Text + " - Strategy: " + mnuStrategy.Text;
			_progressBar.Value = 0;
		}
		#endregion

		#region ZStream Test
		private void btnGenerate_Click(object sender, System.EventArgs e)
		{
			if(tabControl.SelectedTab.Text.Equals("ZStream"))
				GenerateFibonacciData();
		}

		private void btnLoad_Click(object sender, System.EventArgs e)
		{	
			txtOut.Clear();
			txtOut.AppendText("Deserializing data from file " + _sFibonacci + " ..." + Environment.NewLine);

			string sFileName = Application.StartupPath + @"\" + _sFibonacci;

			FileStream fs = null;
			Stream decompressor = null;

			try
			{
				fs = new FileStream(sFileName, FileMode.Open);

				CRC32 sum = new CRC32();
				decompressor = new ZStream(fs, false, 15, sum);

				BinaryFormatter bf = new BinaryFormatter();
				FibonacciDataSet ds = (FibonacciDataSet) bf.Deserialize(decompressor);
				decompressor.Close();

				dataGrid1.DataSource = ds;
				dataGrid1.DataMember = "Fibonacci";

				UpdateStatistics(decompressor);
			}
			catch(Exception err)
			{
				txtOut.AppendText(err.Message);
			}
			finally
			{
				if(null != fs)
					fs.Close();
			}
		}

		private void btnSave_Click(object sender, System.EventArgs e)
		{
			FibonacciDataSet ds = (FibonacciDataSet) dataGrid1.DataSource;

			if(ds == null)
			{
				ds = (FibonacciDataSet) GenerateFibonacciData();
			}

			txtOut.Clear();
			txtOut.AppendText("Serializing data to file " + _sFibonacci + " ..." + Environment.NewLine);

			string sFileName = Application.StartupPath + @"\" + _sFibonacci;

			FileStream fs = null;
			Stream compressor = null;

			try
			{
				fs = new FileStream(sFileName, FileMode.Create, FileAccess.Write, FileShare.None);
				CRC32 sum = new CRC32();
				compressor = new ZStream(fs, 
					(CompressionLevel) Enum.Parse(typeof(CompressionLevel), mnuLevel.Text), 
					(CompressionStrategy) Enum.Parse(typeof(CompressionStrategy), mnuStrategy.Text), 15, sum);

				BinaryFormatter bf = new BinaryFormatter();
				bf.Serialize(compressor, ds);
				compressor.Close();

				UpdateStatistics(compressor);
			}
			catch(Exception err)
			{
				txtOut.AppendText(err.Message);
			}
			finally
			{
				if(null != fs)
					fs.Close();
			}
		}

		private void UpdateStatistics(Stream stream)
		{
			ZStream zstream = stream as ZStream;

			if(zstream != null)
			{
				int nChk = zstream.Checksum;
				long nSizeCompressed = zstream.CompressedLength;
				long nSizeUncompressed = zstream.UncompressedLength;
				float fRatio = CompressRatio(nSizeUncompressed, nSizeCompressed);

				txtOut.AppendText(String.Format("\r\nChecksum {0:X}\r\nSize {1} Bytes\r\nCompressed Size {2} Bytes\r\nCompression Ratio {3}%", 
					nChk, nSizeUncompressed, nSizeCompressed, fRatio));
			}
		}

		private DataSet GenerateFibonacciData()
		{
			txtOut.Clear();

			dataGrid1.DataSource = null;
			FibonacciDataSet ds = new FibonacciDataSet();

			txtOut.AppendText("Creating Fibonacci series data..." + Environment.NewLine);
			for(int x = 1; x <= 1000; x++) 
			{
				
				double n = Fibonacci(x);
				ds.Fibonacci.AddFibonacciRow(x, n, _FN1/_FN2);
			}

			dataGrid1.DataSource = ds;
			dataGrid1.DataMember = "Fibonacci";

			txtOut.AppendText("Done.");

			return ds;
		}

		private double Fibonacci(double n)
		{
			if(n < 1)
				return 0;
			if(n == 1 || n == 2)
			{
				_FN1 = _FN2 = 1;
				return 1;
			}

			double r = _FN1 + _FN2;
			
			_FN2 = _FN1;
			_FN1 = r;

			return r;
		}
		#endregion

		#region ZCompressor Test

		private void btnCompress_Click(object sender, System.EventArgs e)
		{
			string sData = txtData.Text;

			Encoding encoder = Encoding.UTF7;
			
			try
			{
				byte [] buffer = encoder.GetBytes(sData);

				// Compress the buffer
				_compressedData = ZCompressor.Compress(buffer, 
					(CompressionLevel) Enum.Parse(typeof(CompressionLevel), mnuLevel.Text));

				txtData.Text = encoder.GetString(_compressedData);
				
			}
			catch(ZException err)
			{
				txtData.Text = err.Message;
			}
		}

		private void btnUncompress_Click(object sender, System.EventArgs e)
		{
			if(_compressedData == null)
				return;

			try
			{
				string sData = txtData.Text;
				Encoding encoder = Encoding.UTF7;
				Byte [] uncompressed = ZCompressor.Uncompress(_compressedData);
			
				txtData.Text = encoder.GetString(uncompressed);
			}
			catch(ZException err)
			{
				txtData.Text = err.Message;
			}
		}
		#endregion

		#region CRC Test

		private void btnBrowseIn_Click(object sender, System.EventArgs e)
		{
			txtFileIn.Text = Common.BrowseForFile("Choose file", "All files (*.*)|*.*");
		}

		private void btnAdler_Click(object sender, System.EventArgs e)
		{
			Adler32 crc = new Adler32();
			DoChecksum(txtFileIn.Text, crc);
			lblAdler.Text = crc.Checksum.ToString("X");
		}

		private void btnCrc_Click(object sender, System.EventArgs e)
		{
			CRC32 crc = new CRC32();
			DoChecksum(txtFileIn.Text, crc);
			lblCrc.Text = crc.Checksum.ToString("X");
		}

		private long DoChecksum(string sFile, IChecksum chk)
		{
			FileStream fs = null;
			uint checksum = 0;

			try
			{
				Byte [] data = new Byte[32768];

				fs = new FileStream(sFile, FileMode.Open);
				
				int nRead = fs.Read(data, 0, 32768);
				
				while(nRead > 0)
				{
					checksum = chk.Update(data, 0, nRead);
					nRead = fs.Read(data, 0, 32768);
				}
			}
			catch(Exception err)
			{
				MessageBox.Show(err.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
			finally
			{
				if(null != fs)
					fs.Close();
			}

			return checksum;
		}
		#endregion

		#region Zip Test

		private void toolBarZip_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
		{
			ToolBar toolbar = (ToolBar) sender;
			_totalFilesFound = 0;

			switch(e.Button.Text)
			{
				case "New":
					if(null != _archive)
					{
						NeedSave();
						_archive.Dispose();
					}
					_archive = OnNewZipArchive();
					break;

				case "Open":
					if(null != _archive)
					{
						NeedSave();
						_archive.Dispose();
					}
					_archive = OnOpenZipArchive();
					break;
				
				case "Add":
					OnAddZipArchive(_archive);
					break;

				case "Remove":
					OnRemoveZipArchive(_archive);
					break;

				case "ExtractTo":
					OnExtractToZipArchive(_archive);
					break;
				
				case "Test":
					OnTestZipArchive(_archive);
					break;

				case "Comment":
					OnCommentZipArchive(_archive);
					break;

				default:
					break;
			}
		}

		private void NeedSave()
		{
			Stream zipStream = _archive.ArchiveStream;
			if(zipStream.GetType() == typeof(MemoryStream))
			{
				DialogResult dlgRes = MessageBox.Show("Do you want save Memory Zip archive to file?", 
					"Save Memory Zip Archive", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
				
				if(DialogResult.Yes == dlgRes)
				{
					SaveFileDialog dlg = new SaveFileDialog();
					dlg.Filter = "zip files (*.zip)|*.zip|All files (*.*)|*.*";
					if(DialogResult.OK == dlg.ShowDialog())
					{
						using(FileStream file = new FileStream(dlg.FileName, FileMode.Create, FileAccess.Write))
						{
							StreamUtilities.StreamCopy(zipStream, 0, file);
						}
					}
				}
			}
		}
		private ZipArchive OnNewZipArchive()
		{
			ZipArchive archive = null;

			try
			{
				if(_isMmoryZip)
				{
					MemoryStream zipStream = new MemoryStream();
					archive = new ZipArchive(zipStream);
				}
				else
				{
					string sFile = Common.BrowseForFile("New zip file", "zip files (*.zip)|*.zip|All files (*.*)|*.*");
			
					if(0 == sFile.Length)
						return null;

					archive = new ZipArchive(sFile, FileMode.CreateNew, FileAccess.ReadWrite);
				}

				archive.Progress += new ZipProgressEventHandler(OnZipProgress);
				archive.Filter += new ZipFilterEventHandler(OnZipFilter);
				archive.Fail += new ZipFailEventHandler(OnZipFail);
			}
			catch(Exception e)
			{
				MessageBox.Show(e.Message, "New Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}

			UpdateCommentView(archive);
			UpdateArchiveListView(archive);
			UpdateStatusBar();

			return archive;
		}
		private ZipArchive OnOpenZipArchive()
		{
			string sFile = Common.BrowseForFile("Open zip file", "zip files (*.zip)|*.zip|All files (*.*)|*.*");
			
			if(0 == sFile.Length)
				return null;

			ZipArchive archive = null;
			try
			{
				archive = new ZipArchive(sFile, FileMode.Open, FileAccess.ReadWrite);
			
				archive.Progress += new ZipProgressEventHandler(OnZipProgress);
				archive.Filter += new ZipFilterEventHandler(OnZipFilter);
				archive.Fail += new ZipFailEventHandler(OnZipFail);
			}
			catch(Exception e)
			{
				MessageBox.Show(e.Message, "Open Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}

			UpdateCommentView(archive);
			UpdateArchiveListView(archive);
			UpdateStatusBar();

			return archive;
		}

		private void OnAddZipArchive(ZipArchive archive)
		{
			if(archive == null)
				return;

			ZipAdd dlg = new ZipAdd();
			
			dlg.OverwriteExisting = archive.OverwriteExisting;
			dlg.Recursive = true;

			DialogResult res = dlg.ShowDialog();
			if(res == DialogResult.Cancel)
				return;

			archive.DefaultCompressionLevel = (CompressionLevel) Enum.Parse(typeof(CompressionLevel), mnuLevel.Text);
			archive.OverwriteExisting = dlg.OverwriteExisting;
			archive.StoreFilePaths = dlg.StoreFilePath;
			archive.IncludeFilter = dlg.IncludeFilter;
			archive.ExcludeFilter = dlg.ExcludeFilter;
	
			if(dlg.AddFiles.Length > 0)
			{
				try
				{
					archive.Add(dlg.AddFiles, archive.DefaultCompressionLevel, dlg.Recursive);
				}
				catch(ZipException e)
				{
					MessageBox.Show(e.Message, "Add Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}

				UpdateArchiveListView(archive);
			}
		}

		private void OnRemoveZipArchive(ZipArchive archive)
		{
			if(archive == null)
				return;

			foreach(ListViewItem lvi in lvwZipFiles.SelectedItems)
			{
				ZipEntry entry = (ZipEntry) lvi.Tag;
				try
				{
					archive.Remove(entry.FileName, true);
				}
				catch(ZipException e)
				{
					MessageBox.Show(e.Message, "Remove Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}
			}

			UpdateArchiveListView(archive);
		}

		private void OnExtractToZipArchive(ZipArchive archive)
		{
			if(archive == null)
				return;

			if(folderBrowserDialog.ShowDialog() == DialogResult.OK)
			{
				try
				{
					archive.OverwriteExisting = true;
					archive.BuildTree = true;
					archive.ExtractTo(folderBrowserDialog.SelectedPath);
				}
				catch(ZipException e)
				{
					MessageBox.Show(e.Message, "ExtractTo Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}
			}
		}

		private void OnTestZipArchive(ZipArchive archive)
		{
			if(archive == null)
				return;

			bool bTest = false;
			try
			{
				bTest = archive.Test();
			}
			catch(ZipException e)
			{					
				MessageBox.Show(e.Message, "ExtractTo Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}

			if(bTest)
			{
				MessageBox.Show("Test successfully completed.",
					"Test", MessageBoxButtons.OK, MessageBoxIcon.Information);
			}
			else
			{
				MessageBox.Show("Some error were found during test operation, the archive may be corrupted.", 
					"Test", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
		}
		
		private void OnCommentZipArchive(ZipArchive archive)
		{
			if(archive == null)
				return;

			ZipComment dlg = new ZipComment();
			dlg.Comment = archive.Comment;

			if(dlg.ShowDialog() == DialogResult.OK)
			{
				archive.Comment = dlg.Comment;
				UpdateCommentView(archive);
			}
		}

		private void OnZipProgress(object sender, ZipProgressEventArgs args)
		{
			_progressBar.Value = (int) (args.Percent);
		}

		private void OnZipFilter(object sender, ZipFilterEventArgs args)
		{
			_totalFilesFound += args.FilesFound;
			statusBarPanel1.Text = "Found " + _totalFilesFound.ToString() + " file(s)";
			statusBar.Update();
		}
		private void OnZipFail(object sender, ZipFailEventArgs args)
		{
			args.ThrowException = false;
			DialogResult res = MessageBox.Show(
				args.Exception.Message, "Error: ", MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Exclamation
			);

			switch(res)
			{
				case DialogResult.Abort:
					args.RecoveryAction = ZipRecoveryAction.Abort;
					break;
				case DialogResult.Retry:
					args.RecoveryAction = ZipRecoveryAction.Retry;
					break;
				case DialogResult.Ignore:
					args.RecoveryAction = ZipRecoveryAction.Ignore;
					break;
				default:
					break;
			}
		}

		private void UpdateArchiveListView(ZipArchive archive)
		{
			lvwZipFiles.Items.Clear();

			if(null == archive)
				return;

			lvwZipFiles.BeginUpdate();

			foreach(ZipEntry zf in archive.Entries)
			{
				ListViewItem lvi = new ListViewItem(zf.FileName);
				lvi.Tag = zf;

				
				if(zf.IsDirectory)
				{
					lvi.SubItems.AddRange(new string [] { "", "", "" });
				}
				else
				{
					lvi.SubItems.Add(zf.UncompressedSize.ToString());
					lvi.SubItems.Add(zf.CompressedSize.ToString());
					float ratio = CompressRatio(zf.UncompressedSize, zf.CompressedSize);
					lvi.SubItems.Add(String.Format("{0:G3}%", ratio));
				}
				lvi.SubItems.Add(zf.LastModifiedDateTime.ToString());
				lvi.SubItems.Add(zf.CRC32.ToString("X"));
				lvi.SubItems.Add(zf.Comment);
				lvwZipFiles.Items.Add(lvi);
			}

			lvwZipFiles.EndUpdate();

			statusBarPanel1.Text = "";
			statusBar.Update();

		}

		private void UpdateCommentView(ZipArchive archive)
		{
			if(null == archive)
				return;

			txtComment.Visible = archive.Comment.Length > 0;
			if(txtComment.Visible)
			{
				txtComment.Text = archive.Comment;
			}
		}

		private void cmnuZipFilesComment_Click(object sender, System.EventArgs e)
		{
			if(null == _archive)
				return;

			ZipComment dlg = new ZipComment();
			if(dlg.ShowDialog() == DialogResult.OK)
			{
				if(lvwZipFiles.SelectedItems.Count > 0)
				{
					try
					{
						foreach(ListViewItem item in lvwZipFiles.SelectedItems)
						{
							ZipEntry entry = (ZipEntry) item.Tag;
							entry.Comment = dlg.Comment;
						}
					}
					catch(ZipException ex)
					{
						MessageBox.Show(ex.Message, "set comment error", MessageBoxButtons.OK, MessageBoxIcon.Error);
					}

					UpdateArchiveListView(_archive);
				}
			}
		}

		private void cmnuZipFilesRemove_Click(object sender, System.EventArgs e)
		{
			if(null == _archive)
				return;

			if(lvwZipFiles.SelectedItems.Count > 0)
			{
				try
				{
					foreach(ListViewItem item in lvwZipFiles.SelectedItems)
					{
						ZipEntry entry = (ZipEntry) item.Tag;
						_archive.Entries.Remove(entry);
					}
				}
				catch(ZipException ex)
				{
					MessageBox.Show(ex.Message, "remove error", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}

				UpdateArchiveListView(_archive);
			}
		}

		private void cmnuZipFilesTest_Click(object sender, System.EventArgs e)
		{
			if(null == _archive)
				return;

			if(lvwZipFiles.SelectedItems.Count > 0)
			{
				try
				{
					bool bTest = false;

					foreach(ListViewItem item in lvwZipFiles.SelectedItems)
					{
						ZipEntry entry = (ZipEntry) item.Tag;
						if(! (bTest = _archive.Entries.Test(entry)))
							break;
					}

					if(bTest)
					{
						MessageBox.Show("Test successfully completed.", "Test",
							MessageBoxButtons.OK, MessageBoxIcon.Information);
					}
				}
				catch(ZipException ex)
				{					
					MessageBox.Show(ex.Message, "ExtractTo Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}
			}
		}

		private void cmnuOpenMemory_Click(object sender, System.EventArgs e)
		{
			MenuItem item = sender as MenuItem;
			_isMmoryZip = item.Checked = !item.Checked;
		}
		#endregion

	}
}