mainform.cs

一个简单的文本编辑器程序,功能和windows记事本类似

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

namespace Editor
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class MainForm : System.Windows.Forms.Form
	{
		#region windows controls
		private System.Windows.Forms.MainMenu mainMenu;
		private System.Windows.Forms.MenuItem menu_File;
		private System.Windows.Forms.MenuItem menu_Edit;
		private System.Windows.Forms.MenuItem menu_Help;
		private System.Windows.Forms.MenuItem menu_FileOpen;
		private System.Windows.Forms.MenuItem menu_FileSave;
		private System.Windows.Forms.MenuItem menu_FileSaveAs;
		private System.Windows.Forms.MenuItem menu_Format;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menu_EditCut;
		private System.Windows.Forms.MenuItem menu_EditCopy;
		private System.Windows.Forms.MenuItem menu_EditPaste;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.MenuItem menu_EditDel;
		private System.Windows.Forms.MenuItem menu_EditSelAll;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menu_EditFind;
		private System.Windows.Forms.MenuItem menu_EditReplace;
		public System.Windows.Forms.RichTextBox txtMain;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menu_FileExit;
		private System.Windows.Forms.MenuItem menu_HelpAbout;
		private System.Windows.Forms.MenuItem menu_FileNew;
		private System.Windows.Forms.StatusBar mainStatus;
		private System.Windows.Forms.StatusBarPanel statusBarSaveTime;
		private System.Windows.Forms.OpenFileDialog dlg_openFile;
		private System.Windows.Forms.SaveFileDialog dlg_saveFile;
		private System.Windows.Forms.FontDialog dlg_font;
		private System.Windows.Forms.MenuItem menu_EditUndo;
		private System.Windows.Forms.MenuItem menu_EditRedo;
		private System.Windows.Forms.MenuItem menu_FormatFont;
		private System.Windows.Forms.MenuItem menuItem7;
		private System.Windows.Forms.MenuItem menu_EncodeGB;
		private System.Windows.Forms.MenuItem menu_EncodeASCII;
		private System.Windows.Forms.MenuItem menu_EncodeUTF7;
		private System.Windows.Forms.MenuItem menu_EncodeUTF8;
		private System.Windows.Forms.MenuItem menu_EncodeUni;
		#endregion

		#region 定义的field和attribute
		private bool IsChanged; // 文档是否被修改
		private bool IsSaved;	// 文档是否被保存过
		private Encoding TextEncoding = Encoding.GetEncoding("GB2312");
		private SearchAndReplace searchForm;
		private string fileName;// 文档的文件名
		public string FileName
		{
			get
			{
				if(this.fileName == null)
				{
					return "无标题";
				}
				return this.fileName;
			}
			set
			{
				this.fileName = value;
			}
		}
		#endregion
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		public MainForm()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if(!AlertSaveFile())
			{
				return;
			}
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu = new System.Windows.Forms.MainMenu();
			this.menu_File = new System.Windows.Forms.MenuItem();
			this.menu_FileNew = new System.Windows.Forms.MenuItem();
			this.menu_FileOpen = new System.Windows.Forms.MenuItem();
			this.menu_FileSave = new System.Windows.Forms.MenuItem();
			this.menu_FileSaveAs = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.menu_FileExit = new System.Windows.Forms.MenuItem();
			this.menu_Edit = new System.Windows.Forms.MenuItem();
			this.menu_EditUndo = new System.Windows.Forms.MenuItem();
			this.menu_EditRedo = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menu_EditCut = new System.Windows.Forms.MenuItem();
			this.menu_EditCopy = new System.Windows.Forms.MenuItem();
			this.menu_EditPaste = new System.Windows.Forms.MenuItem();
			this.menu_EditDel = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.menu_EditFind = new System.Windows.Forms.MenuItem();
			this.menu_EditReplace = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menu_EditSelAll = new System.Windows.Forms.MenuItem();
			this.menu_Format = new System.Windows.Forms.MenuItem();
			this.menu_FormatFont = new System.Windows.Forms.MenuItem();
			this.menuItem7 = new System.Windows.Forms.MenuItem();
			this.menu_EncodeGB = new System.Windows.Forms.MenuItem();
			this.menu_EncodeUni = new System.Windows.Forms.MenuItem();
			this.menu_EncodeUTF7 = new System.Windows.Forms.MenuItem();
			this.menu_EncodeUTF8 = new System.Windows.Forms.MenuItem();
			this.menu_EncodeASCII = new System.Windows.Forms.MenuItem();
			this.menu_Help = new System.Windows.Forms.MenuItem();
			this.menu_HelpAbout = new System.Windows.Forms.MenuItem();
			this.txtMain = new System.Windows.Forms.RichTextBox();
			this.mainStatus = new System.Windows.Forms.StatusBar();
			this.statusBarSaveTime = new System.Windows.Forms.StatusBarPanel();
			this.dlg_openFile = new System.Windows.Forms.OpenFileDialog();
			this.dlg_saveFile = new System.Windows.Forms.SaveFileDialog();
			this.dlg_font = new System.Windows.Forms.FontDialog();
			((System.ComponentModel.ISupportInitialize)(this.statusBarSaveTime)).BeginInit();
			this.SuspendLayout();
			// 
			// mainMenu
			// 
			this.mainMenu.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					 this.menu_File,
																					 this.menu_Edit,
																					 this.menu_Format,
																					 this.menu_Help});
			// 
			// menu_File
			// 
			this.menu_File.Index = 0;
			this.menu_File.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menu_FileNew,
																					  this.menu_FileOpen,
																					  this.menu_FileSave,
																					  this.menu_FileSaveAs,
																					  this.menuItem5,
																					  this.menu_FileExit});
			this.menu_File.Text = "文件(&F)";
			// 
			// menu_FileNew
			// 
			this.menu_FileNew.Index = 0;
			this.menu_FileNew.Text = "新建文件";
			this.menu_FileNew.Click += new System.EventHandler(this.menu_FileNew_Click);
			// 
			// menu_FileOpen
			// 
			this.menu_FileOpen.Index = 1;
			this.menu_FileOpen.Text = "打开文件";
			this.menu_FileOpen.Click += new System.EventHandler(this.menu_FileOpen_Click);
			// 
			// menu_FileSave
			// 
			this.menu_FileSave.Index = 2;
			this.menu_FileSave.Text = "保存";
			this.menu_FileSave.Click += new System.EventHandler(this.menu_FileSave_Click);
			// 
			// menu_FileSaveAs
			// 
			this.menu_FileSaveAs.Index = 3;
			this.menu_FileSaveAs.Text = "另存为...";
			this.menu_FileSaveAs.Click += new System.EventHandler(this.menu_FileSaveAs_Click);
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 4;
			this.menuItem5.Text = "-";
			// 
			// menu_FileExit
			// 
			this.menu_FileExit.Index = 5;
			this.menu_FileExit.Text = "退出";
			this.menu_FileExit.Click += new System.EventHandler(this.menu_FileExit_Click);
			// 
			// menu_Edit
			// 
			this.menu_Edit.Index = 1;
			this.menu_Edit.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menu_EditUndo,
																					  this.menu_EditRedo,
																					  this.menuItem2,
																					  this.menu_EditCut,
																					  this.menu_EditCopy,
																					  this.menu_EditPaste,
																					  this.menu_EditDel,
																					  this.menuItem3,
																					  this.menu_EditFind,
																					  this.menu_EditReplace,
																					  this.menuItem4,
																					  this.menu_EditSelAll});
			this.menu_Edit.Text = "编辑(&E)";
			// 
			// menu_EditUndo
			// 
			this.menu_EditUndo.Index = 0;
			this.menu_EditUndo.Text = "撤销";
			this.menu_EditUndo.Click += new System.EventHandler(this.menu_EditUndo_Click);
			// 
			// menu_EditRedo
			// 
			this.menu_EditRedo.Index = 1;
			this.menu_EditRedo.Text = "重复";
			this.menu_EditRedo.Click += new System.EventHandler(this.menu_EditRedo_Click);
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 2;
			this.menuItem2.Text = "-";
			// 
			// menu_EditCut
			// 
			this.menu_EditCut.Index = 3;
			this.menu_EditCut.Text = "剪切";
			this.menu_EditCut.Click += new System.EventHandler(this.menu_EditCut_Click);
			// 
			// menu_EditCopy
			// 
			this.menu_EditCopy.Index = 4;
			this.menu_EditCopy.Text = "复制";
			this.menu_EditCopy.Click += new System.EventHandler(this.menu_EditCopy_Click);
			// 
			// menu_EditPaste
			// 
			this.menu_EditPaste.Index = 5;
			this.menu_EditPaste.Text = "粘贴";
			this.menu_EditPaste.Click += new System.EventHandler(this.menu_EditPaste_Click);
			// 
			// menu_EditDel
			// 
			this.menu_EditDel.Index = 6;
			this.menu_EditDel.Text = "删除";
			this.menu_EditDel.Click += new System.EventHandler(this.menu_EditDel_Click);
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 7;
			this.menuItem3.Text = "-";
			// 
			// menu_EditFind
			// 
			this.menu_EditFind.Index = 8;
			this.menu_EditFind.Text = "查找";
			this.menu_EditFind.Click += new System.EventHandler(this.menu_EditFind_Click);
			// 
			// menu_EditReplace
			// 
			this.menu_EditReplace.Index = 9;
			this.menu_EditReplace.Text = "替换";
			this.menu_EditReplace.Click += new System.EventHandler(this.menu_EditFind_Click);
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 10;
			this.menuItem4.Text = "-";
			// 
			// menu_EditSelAll
			// 
			this.menu_EditSelAll.Index = 11;
			this.menu_EditSelAll.Text = "全选";
			this.menu_EditSelAll.Click += new System.EventHandler(this.menu_EditSelAll_Click);
			// 
			// menu_Format
			// 
			this.menu_Format.Index = 2;
			this.menu_Format.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						this.menu_FormatFont,
																						this.menuItem7});
			this.menu_Format.Text = "格式(&O)";
			// 
			// menu_FormatFont
			// 
			this.menu_FormatFont.Index = 0;
			this.menu_FormatFont.Text = "字体";
			this.menu_FormatFont.Click += new System.EventHandler(this.menu_FormatFont_Click);
			// 
			// menuItem7
			// 
			this.menuItem7.Index = 1;
			this.menuItem7.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menu_EncodeGB,
																					  this.menu_EncodeUni,
																					  this.menu_EncodeUTF7,
																					  this.menu_EncodeUTF8,
																					  this.menu_EncodeASCII});
			this.menuItem7.Text = "编码";
			// 
			// menu_EncodeGB
			// 
			this.menu_EncodeGB.Index = 0;
			this.menu_EncodeGB.Text = "GB2312";
			this.menu_EncodeGB.Click += new System.EventHandler(this.menu_EncodeGB_Click);
			// 
			// menu_EncodeUni
			// 
			this.menu_EncodeUni.Index = 1;
			this.menu_EncodeUni.Text = "Unicode";
			this.menu_EncodeUni.Click += new System.EventHandler(this.menu_EncodeUni_Click);
			// 
			// menu_EncodeUTF7
			// 
			this.menu_EncodeUTF7.Index = 2;
			this.menu_EncodeUTF7.Text = "UTF7";
			this.menu_EncodeUTF7.Click += new System.EventHandler(this.menu_EncodeUTF7_Click);
			// 
			// menu_EncodeUTF8
			// 
			this.menu_EncodeUTF8.Index = 3;
			this.menu_EncodeUTF8.Text = "UTF8";
			this.menu_EncodeUTF8.Click += new System.EventHandler(this.menu_EncodeUTF8_Click);
			// 
			// menu_EncodeASCII
			// 
			this.menu_EncodeASCII.Index = 4;
			this.menu_EncodeASCII.Text = "ASCII";
			this.menu_EncodeASCII.Click += new System.EventHandler(this.menu_EncodeASCII_Click);
			// 
			// menu_Help
			// 
			this.menu_Help.Index = 3;
			this.menu_Help.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menu_HelpAbout});
			this.menu_Help.Text = "帮助(&H)";
			// 
			// menu_HelpAbout
			// 
			this.menu_HelpAbout.Index = 0;
			this.menu_HelpAbout.Text = "关于";
			this.menu_HelpAbout.Click += new System.EventHandler(this.menu_HelpAbout_Click);
			// 
			// txtMain
			// 
			this.txtMain.AcceptsTab = true;
			this.txtMain.AllowDrop = true;
			this.txtMain.Location = new System.Drawing.Point(0, 0);
			this.txtMain.Name = "txtMain";
			this.txtMain.Size = new System.Drawing.Size(408, 256);
			this.txtMain.TabIndex = 0;
			this.txtMain.Text = "";
			this.txtMain.TextChanged += new System.EventHandler(this.txtMain_TextChanged);
			// 
			// mainStatus
			// 
			this.mainStatus.Location = new System.Drawing.Point(0, 261);
			this.mainStatus.Name = "mainStatus";
			this.mainStatus.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] {
																						  this.statusBarSaveTime});
			this.mainStatus.ShowPanels = true;
			this.mainStatus.Size = new System.Drawing.Size(408, 20);
			this.mainStatus.TabIndex = 1;
			// 
			// statusBarSaveTime