C#记事本的简单开发
2024-04-19 09:22:04
目录
我的代码由三个窗体，Form1为记事本窗体，还有一部分代码就不需要看了，应为都是系统自动生成的代码
下面是记事本的Form1事件里面的内容 。
下面是Form2事件的内容，这个是替换的对话框
下面是Form3 的事件内容，为查找框里面的内容
我的代码由三个窗体，Form1为记事本窗体，还有一部分代码就不需要看了，应为都是系统自动生成的代码
下面是记事本的Form1事件里面的内容 。
下面是代码，里面有剪切，粘贴还有其他功能。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;namespace 记事本开发1._0
{public partial class Form1 : Form{public Form1(){InitializeComponent();}String Filename=String.Empty;public int guangbiao;public String str;private void 打印ToolStripMenuItem_Click(object sender, EventArgs e){}private void 自动换行ToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.WordWrap == true){textBox1.WordWrap = false;}else{textBox1.WordWrap = true;}}private void 另存为AToolStripMenuItem_Click(object sender, EventArgs e){StreamWriter myStream;saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";saveFileDialog1.RestoreDirectory = true;if (saveFileDialog1.ShowDialog() == DialogResult.OK){string str;str = saveFileDialog1.FileName;myStream = new StreamWriter(saveFileDialog1.FileName);myStream.Write(textBox1.Text);myStream.Flush();myStream.Close();}}private void 打开OCtrlOToolStripMenuItem_Click(object sender, EventArgs e){string resultFile;openFileDialog1.InitialDirectory = "D:\\";openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";openFileDialog1.RestoreDirectory = true;if (openFileDialog1.ShowDialog() == DialogResult.OK){resultFile = openFileDialog1.FileName;this.Text = openFileDialog1.SafeFileName + "-记事本";StreamReader reader = new StreamReader(openFileDialog1.FileName, System.Text.Encoding.Default);textBox1.Text = reader.ReadToEnd();this.Filename = openFileDialog1.FileName;reader.Close();}}private void 字体FToolStripMenuItem_Click(object sender, EventArgs e){if (fontDialog1.ShowDialog() == DialogResult.OK){textBox1.Font = fontDialog1.Font;}}private void 撤销UCtrlZToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.CanUndo == true){textBox1.Undo();textBox1.ClearUndo();}}private void 复制CCtrlCToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.SelectionLength != 0){textBox1.Copy();}}private void 剪切TCtrlXToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.SelectionLength != 0){textBox1.Cut();}}private void 全选ACtrlAToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.Text != string.Empty){textBox1.SelectAll();}}private void 新建CtrlNToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.Modified == true){DialogResult result = MessageBox.Show("文本发生了改变，要保存吗？", "注意", MessageBoxButtons.YesNoCancel);if (result == DialogResult.Yes){if (this.Filename == String.Empty){saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";saveFileDialog1.RestoreDirectory = true;DialogResult bresult = saveFileDialog1.ShowDialog(); if (bresult == DialogResult.Cancel){textBox1.Text = textBox1.Text;}else{saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";saveFileDialog1.RestoreDirectory = true;saveFileDialog1.ShowDialog();StreamWriter writer = new StreamWriter(saveFileDialog1.FileName, true, ASCIIEncoding.Default);writer.Write(textBox1.Text);writer.Close();textBox1.Modified = false;}}else{StreamWriter writer = new StreamWriter(this.Filename, true, ASCIIEncoding.Default);writer.Write(textBox1.Text);writer.Close();textBox1.Modified = false;}}else if (result == DialogResult.No){textBox1.Clear();}else{textBox1.Text = textBox1.Text;}}else{textBox1.Clear();}}private void 保存SCtrlSToolStripMenuItem_Click(object sender, EventArgs e){if (this.Filename == string.Empty){saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";saveFileDialog1.RestoreDirectory = true;DialogResult result = saveFileDialog1.ShowDialog();if (result == DialogResult.Cancel){textBox1.Text = textBox1.Text;}else{StreamWriter writer = new StreamWriter(saveFileDialog1.FileName,true,ASCIIEncoding.Default);writer.Write(textBox1.Text);writer.Close();textBox1.Modified = false;}}else{StreamWriter writer = new StreamWriter(this.Filename, true, ASCIIEncoding.Default);writer.Write(textBox1.Text);writer.Close();textBox1.Modified = false;}}private void 粘贴PCtrlVToolStripMenuItem_Click(object sender, EventArgs e){if (Clipboard.GetText().ToString() != ""){textBox1.Paste();}}private void 删除LToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.SelectedText != string.Empty){textBox1.SelectedText = string.Empty;}}private void 时间日期DF5ToolStripMenuItem_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + DateTime.Now.ToString();}private void 编辑EToolStripMenuItem_Click(object sender, EventArgs e){if (textBox1.Modified == false){撤销UCtrlZToolStripMenuItem.Enabled = false;}else{撤销UCtrlZToolStripMenuItem.Enabled = true;}if (textBox1.SelectedText == ""){剪切TCtrlXToolStripMenuItem.Enabled = false;删除LToolStripMenuItem.Enabled = false;复制CCtrlCToolStripMenuItem.Enabled = false;}else{剪切TCtrlXToolStripMenuItem.Enabled = true;删除LToolStripMenuItem.Enabled = true;复制CCtrlCToolStripMenuItem.Enabled = true;}if (textBox1.Text == ""){查找FCtrlFToolStripMenuItem.Enabled = false;替换RCtrlHToolStripMenuItem.Enabled = false;}else{查找FCtrlFToolStripMenuItem.Enabled = true;替换RCtrlHToolStripMenuItem.Enabled = true;}if (Clipboard.GetText().ToString() == ""){粘贴PCtrlVToolStripMenuItem.Enabled = false;}else{粘贴PCtrlVToolStripMenuItem.Enabled = true;}}private void 查找FCtrlFToolStripMenuItem_Click(object sender, EventArgs e){Form3 cc = new Form3();cc.Owner = this;guangbiao = textBox1.SelectionStart;str = textBox1.Text;cc.Show();}private void 替换RCtrlHToolStripMenuItem_Click(object sender, EventArgs e){Form2 dd = new Form2();dd.Owner = this;guangbiao = textBox1.SelectionStart;str = textBox1.Text;dd.Show();}private void 帮助ToolStripMenuItem_Click(object sender, EventArgs e){}private void textBox1_TextChanged(object sender, EventArgs e){}private void textBox1_KeyPress(object sender, KeyPressEventArgs e){}private void textBox1_MouseDown(object sender, MouseEventArgs e){guangbiao = textBox1.SelectionStart;}private void 查找下一项NF3ToolStripMenuItem_Click(object sender, EventArgs e){Form3 cc = new Form3();cc.Owner = this;guangbiao = textBox1.SelectionStart;str = textBox1.Text;cc.Show();}}
}
namespace 记事本开发1._0
{partial class Form1{/// <summary>/// 必需的设计器变量。/// </summary>private System.ComponentModel.IContainer components = null;/// <summary>/// 清理所有正在使用的资源。/// </summary>/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>protected override void Dispose(bool disposing){if (disposing && (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 - 不要修改/// 使用代码编辑器修改此方法的内容。/// </summary>private void InitializeComponent(){this.menuStrip1 = new System.Windows.Forms.MenuStrip();this.文件FToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.新建CtrlNToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.打开OCtrlOToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.保存SCtrlSToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.另存为AToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.toolStripSeparator4 = new System.Windows.Forms.ToolStripSeparator();this.页面设置UToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.打印ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.toolStripSeparator5 = new System.Windows.Forms.ToolStripSeparator();this.退出ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.编辑EToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.撤销UCtrlZToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.toolStripSeparator1 = new System.Windows.Forms.ToolStripSeparator();this.剪切TCtrlXToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.复制CCtrlCToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.粘贴PCtrlVToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.删除LToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.toolStripSeparator2 = new System.Windows.Forms.ToolStripSeparator();this.查找FCtrlFToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.查找下一项NF3ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.替换RCtrlHToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.转到GCtrlGToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.toolStripSeparator3 = new System.Windows.Forms.ToolStripSeparator();this.全选ACtrlAToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.时间日期DF5ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.格式OToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.自动换行ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.字体FToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.查看VToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.状态栏SToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.帮助ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.查看帮助HToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.toolStripSeparator6 = new System.Windows.Forms.ToolStripSeparator();this.关于记事本AToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();this.textBox1 = new System.Windows.Forms.TextBox();this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();this.fontDialog1 = new System.Windows.Forms.FontDialog();this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();this.menuStrip1.SuspendLayout();this.SuspendLayout();// // menuStrip1// this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {this.文件FToolStripMenuItem,this.编辑EToolStripMenuItem,this.格式OToolStripMenuItem,this.查看VToolStripMenuItem,this.帮助ToolStripMenuItem});this.menuStrip1.Location = new System.Drawing.Point(0, 0);this.menuStrip1.Name = "menuStrip1";this.menuStrip1.Size = new System.Drawing.Size(1043, 25);this.menuStrip1.TabIndex = 0;this.menuStrip1.Text = "menuStrip1";// // 文件FToolStripMenuItem// this.文件FToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {this.新建CtrlNToolStripMenuItem,this.打开OCtrlOToolStripMenuItem,this.保存SCtrlSToolStripMenuItem,this.另存为AToolStripMenuItem,this.toolStripSeparator4,this.页面设置UToolStripMenuItem,this.打印ToolStripMenuItem,this.toolStripSeparator5,this.退出ToolStripMenuItem});this.文件FToolStripMenuItem.Name = "文件FToolStripMenuItem";this.文件FToolStripMenuItem.Size = new System.Drawing.Size(58, 21);this.文件FToolStripMenuItem.Text = "文件(F)";// // 新建CtrlNToolStripMenuItem// this.新建CtrlNToolStripMenuItem.Name = "新建CtrlNToolStripMenuItem";this.新建CtrlNToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.新建CtrlNToolStripMenuItem.Text = "新建 Ctrl+N";this.新建CtrlNToolStripMenuItem.Click += new System.EventHandler(this.新建CtrlNToolStripMenuItem_Click);// // 打开OCtrlOToolStripMenuItem// this.打开OCtrlOToolStripMenuItem.Name = "打开OCtrlOToolStripMenuItem";this.打开OCtrlOToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.打开OCtrlOToolStripMenuItem.Text = "打开(O).. Ctrl+O";this.打开OCtrlOToolStripMenuItem.Click += new System.EventHandler(this.打开OCtrlOToolStripMenuItem_Click);// // 保存SCtrlSToolStripMenuItem// this.保存SCtrlSToolStripMenuItem.Name = "保存SCtrlSToolStripMenuItem";this.保存SCtrlSToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.保存SCtrlSToolStripMenuItem.Text = "保存(S) Ctrl+S";this.保存SCtrlSToolStripMenuItem.ToolTipText = "-";this.保存SCtrlSToolStripMenuItem.Click += new System.EventHandler(this.保存SCtrlSToolStripMenuItem_Click);// // 另存为AToolStripMenuItem// this.另存为AToolStripMenuItem.Name = "另存为AToolStripMenuItem";this.另存为AToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.另存为AToolStripMenuItem.Text = "另存为(A)...";this.另存为AToolStripMenuItem.Click += new System.EventHandler(this.另存为AToolStripMenuItem_Click);// // toolStripSeparator4// this.toolStripSeparator4.Name = "toolStripSeparator4";this.toolStripSeparator4.Size = new System.Drawing.Size(172, 6);// // 页面设置UToolStripMenuItem// this.页面设置UToolStripMenuItem.Name = "页面设置UToolStripMenuItem";this.页面设置UToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.页面设置UToolStripMenuItem.Text = "页面设置(U)..";// // 打印ToolStripMenuItem// this.打印ToolStripMenuItem.Name = "打印ToolStripMenuItem";this.打印ToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.打印ToolStripMenuItem.Text = "打印()";this.打印ToolStripMenuItem.Click += new System.EventHandler(this.打印ToolStripMenuItem_Click);// // toolStripSeparator5// this.toolStripSeparator5.Name = "toolStripSeparator5";this.toolStripSeparator5.Size = new System.Drawing.Size(172, 6);// // 退出ToolStripMenuItem// this.退出ToolStripMenuItem.Name = "退出ToolStripMenuItem";this.退出ToolStripMenuItem.Size = new System.Drawing.Size(175, 22);this.退出ToolStripMenuItem.Text = "退出";// // 编辑EToolStripMenuItem// this.编辑EToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {this.撤销UCtrlZToolStripMenuItem,this.toolStripSeparator1,this.剪切TCtrlXToolStripMenuItem,this.复制CCtrlCToolStripMenuItem,this.粘贴PCtrlVToolStripMenuItem,this.删除LToolStripMenuItem,this.toolStripSeparator2,this.查找FCtrlFToolStripMenuItem,this.查找下一项NF3ToolStripMenuItem,this.替换RCtrlHToolStripMenuItem,this.转到GCtrlGToolStripMenuItem,this.toolStripSeparator3,this.全选ACtrlAToolStripMenuItem,this.时间日期DF5ToolStripMenuItem});this.编辑EToolStripMenuItem.Name = "编辑EToolStripMenuItem";this.编辑EToolStripMenuItem.Size = new System.Drawing.Size(59, 21);this.编辑EToolStripMenuItem.Text = "编辑(E)";this.编辑EToolStripMenuItem.Click += new System.EventHandler(this.编辑EToolStripMenuItem_Click);// // 撤销UCtrlZToolStripMenuItem// this.撤销UCtrlZToolStripMenuItem.Name = "撤销UCtrlZToolStripMenuItem";this.撤销UCtrlZToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.撤销UCtrlZToolStripMenuItem.Text = "撤销(U) Ctrl+Z";this.撤销UCtrlZToolStripMenuItem.Click += new System.EventHandler(this.撤销UCtrlZToolStripMenuItem_Click);// // toolStripSeparator1// this.toolStripSeparator1.Name = "toolStripSeparator1";this.toolStripSeparator1.Size = new System.Drawing.Size(177, 6);// // 剪切TCtrlXToolStripMenuItem// this.剪切TCtrlXToolStripMenuItem.Name = "剪切TCtrlXToolStripMenuItem";this.剪切TCtrlXToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.剪切TCtrlXToolStripMenuItem.Text = "剪切(T) Ctrl+X";this.剪切TCtrlXToolStripMenuItem.Click += new System.EventHandler(this.剪切TCtrlXToolStripMenuItem_Click);// // 复制CCtrlCToolStripMenuItem// this.复制CCtrlCToolStripMenuItem.Name = "复制CCtrlCToolStripMenuItem";this.复制CCtrlCToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.复制CCtrlCToolStripMenuItem.Text = "复制(C) Ctrl+C";this.复制CCtrlCToolStripMenuItem.Click += new System.EventHandler(this.复制CCtrlCToolStripMenuItem_Click);// // 粘贴PCtrlVToolStripMenuItem// this.粘贴PCtrlVToolStripMenuItem.Name = "粘贴PCtrlVToolStripMenuItem";this.粘贴PCtrlVToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.粘贴PCtrlVToolStripMenuItem.Text = "粘贴(P) Ctrl+V";this.粘贴PCtrlVToolStripMenuItem.Click += new System.EventHandler(this.粘贴PCtrlVToolStripMenuItem_Click);// // 删除LToolStripMenuItem// this.删除LToolStripMenuItem.Name = "删除LToolStripMenuItem";this.删除LToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.删除LToolStripMenuItem.Text = "删除(L) ";this.删除LToolStripMenuItem.Click += new System.EventHandler(this.删除LToolStripMenuItem_Click);// // toolStripSeparator2// this.toolStripSeparator2.Name = "toolStripSeparator2";this.toolStripSeparator2.Size = new System.Drawing.Size(177, 6);// // 查找FCtrlFToolStripMenuItem// this.查找FCtrlFToolStripMenuItem.Name = "查找FCtrlFToolStripMenuItem";this.查找FCtrlFToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.查找FCtrlFToolStripMenuItem.Text = "查找(F) Ctrl+F";this.查找FCtrlFToolStripMenuItem.Click += new System.EventHandler(this.查找FCtrlFToolStripMenuItem_Click);// // 查找下一项NF3ToolStripMenuItem// this.查找下一项NF3ToolStripMenuItem.Name = "查找下一项NF3ToolStripMenuItem";this.查找下一项NF3ToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.查找下一项NF3ToolStripMenuItem.Text = "查找下一项(N) F3";this.查找下一项NF3ToolStripMenuItem.Click += new System.EventHandler(this.查找下一项NF3ToolStripMenuItem_Click);// // 替换RCtrlHToolStripMenuItem// this.替换RCtrlHToolStripMenuItem.Name = "替换RCtrlHToolStripMenuItem";this.替换RCtrlHToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.替换RCtrlHToolStripMenuItem.Text = "替换(R) Ctrl+H";this.替换RCtrlHToolStripMenuItem.Click += new System.EventHandler(this.替换RCtrlHToolStripMenuItem_Click);// // 转到GCtrlGToolStripMenuItem// this.转到GCtrlGToolStripMenuItem.Name = "转到GCtrlGToolStripMenuItem";this.转到GCtrlGToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.转到GCtrlGToolStripMenuItem.Text = "转到(G) Ctrl+G";// // toolStripSeparator3// this.toolStripSeparator3.Name = "toolStripSeparator3";this.toolStripSeparator3.Size = new System.Drawing.Size(177, 6);// // 全选ACtrlAToolStripMenuItem// this.全选ACtrlAToolStripMenuItem.Name = "全选ACtrlAToolStripMenuItem";this.全选ACtrlAToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.全选ACtrlAToolStripMenuItem.Text = "全选(A) Ctrl+A";this.全选ACtrlAToolStripMenuItem.Click += new System.EventHandler(this.全选ACtrlAToolStripMenuItem_Click);// // 时间日期DF5ToolStripMenuItem// this.时间日期DF5ToolStripMenuItem.Name = "时间日期DF5ToolStripMenuItem";this.时间日期DF5ToolStripMenuItem.Size = new System.Drawing.Size(180, 22);this.时间日期DF5ToolStripMenuItem.Text = "时间/日期(D) F5";this.时间日期DF5ToolStripMenuItem.Click += new System.EventHandler(this.时间日期DF5ToolStripMenuItem_Click);// // 格式OToolStripMenuItem// this.格式OToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {this.自动换行ToolStripMenuItem,this.字体FToolStripMenuItem});this.格式OToolStripMenuItem.Name = "格式OToolStripMenuItem";this.格式OToolStripMenuItem.Size = new System.Drawing.Size(62, 21);this.格式OToolStripMenuItem.Text = "格式(O)";// // 自动换行ToolStripMenuItem// this.自动换行ToolStripMenuItem.Name = "自动换行ToolStripMenuItem";this.自动换行ToolStripMenuItem.Size = new System.Drawing.Size(144, 22);this.自动换行ToolStripMenuItem.Text = "自动换行(W)";this.自动换行ToolStripMenuItem.Click += new System.EventHandler(this.自动换行ToolStripMenuItem_Click);// // 字体FToolStripMenuItem// this.字体FToolStripMenuItem.Name = "字体FToolStripMenuItem";this.字体FToolStripMenuItem.Size = new System.Drawing.Size(144, 22);this.字体FToolStripMenuItem.Text = "字体(F)";this.字体FToolStripMenuItem.Click += new System.EventHandler(this.字体FToolStripMenuItem_Click);// // 查看VToolStripMenuItem// this.查看VToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {this.状态栏SToolStripMenuItem});this.查看VToolStripMenuItem.Name = "查看VToolStripMenuItem";this.查看VToolStripMenuItem.Size = new System.Drawing.Size(60, 21);this.查看VToolStripMenuItem.Text = "查看(V)";// // 状态栏SToolStripMenuItem// this.状态栏SToolStripMenuItem.Name = "状态栏SToolStripMenuItem";this.状态栏SToolStripMenuItem.Size = new System.Drawing.Size(127, 22);this.状态栏SToolStripMenuItem.Text = "状态栏(S)";// // 帮助ToolStripMenuItem// this.帮助ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {this.查看帮助HToolStripMenuItem,this.toolStripSeparator6,this.关于记事本AToolStripMenuItem});this.帮助ToolStripMenuItem.Name = "帮助ToolStripMenuItem";this.帮助ToolStripMenuItem.Size = new System.Drawing.Size(61, 21);this.帮助ToolStripMenuItem.Text = "帮助(H)";this.帮助ToolStripMenuItem.Click += new System.EventHandler(this.帮助ToolStripMenuItem_Click);// // 查看帮助HToolStripMenuItem// this.查看帮助HToolStripMenuItem.Name = "查看帮助HToolStripMenuItem";this.查看帮助HToolStripMenuItem.Size = new System.Drawing.Size(152, 22);this.查看帮助HToolStripMenuItem.Text = "查看帮助(H)";// // toolStripSeparator6// this.toolStripSeparator6.Name = "toolStripSeparator6";this.toolStripSeparator6.Size = new System.Drawing.Size(149, 6);// // 关于记事本AToolStripMenuItem// this.关于记事本AToolStripMenuItem.Name = "关于记事本AToolStripMenuItem";this.关于记事本AToolStripMenuItem.Size = new System.Drawing.Size(152, 22);this.关于记事本AToolStripMenuItem.Text = "关于记事本(A)";// // textBox1// this.textBox1.Dock = System.Windows.Forms.DockStyle.Fill;this.textBox1.Location = new System.Drawing.Point(0, 25);this.textBox1.Multiline = true;this.textBox1.Name = "textBox1";this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Both;this.textBox1.ShortcutsEnabled = false;this.textBox1.Size = new System.Drawing.Size(1043, 540);this.textBox1.TabIndex = 1;this.textBox1.WordWrap = false;this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);this.textBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.textBox1_MouseDown);// // openFileDialog1// this.openFileDialog1.FileName = "openFileDialog1";// // Form1// this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;this.ClientSize = new System.Drawing.Size(1043, 565);this.Controls.Add(this.textBox1);this.Controls.Add(this.menuStrip1);this.MainMenuStrip = this.menuStrip1;this.Name = "Form1";this.Text = "Form1";this.menuStrip1.ResumeLayout(false);this.menuStrip1.PerformLayout();this.ResumeLayout(false);this.PerformLayout();}#endregionprivate System.Windows.Forms.MenuStrip menuStrip1;private System.Windows.Forms.ToolStripMenuItem 文件FToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 新建CtrlNToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 打开OCtrlOToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 保存SCtrlSToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 另存为AToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 页面设置UToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 打印ToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 编辑EToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 格式OToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 查看VToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 帮助ToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 撤销UCtrlZToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 剪切TCtrlXToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 复制CCtrlCToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 粘贴PCtrlVToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 删除LToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 查找FCtrlFToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 查找下一项NF3ToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 替换RCtrlHToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 转到GCtrlGToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 全选ACtrlAToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 时间日期DF5ToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 自动换行ToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 字体FToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 状态栏SToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 查看帮助HToolStripMenuItem;private System.Windows.Forms.ToolStripMenuItem 关于记事本AToolStripMenuItem;private System.Windows.Forms.ToolStripSeparator toolStripSeparator4;private System.Windows.Forms.ToolStripSeparator toolStripSeparator5;private System.Windows.Forms.ToolStripMenuItem 退出ToolStripMenuItem;private System.Windows.Forms.ToolStripSeparator toolStripSeparator1;private System.Windows.Forms.ToolStripSeparator toolStripSeparator2;private System.Windows.Forms.ToolStripSeparator toolStripSeparator3;private System.Windows.Forms.ToolStripSeparator toolStripSeparator6;public System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.OpenFileDialog openFileDialog1;private System.Windows.Forms.FontDialog fontDialog1;private System.Windows.Forms.SaveFileDialog saveFileDialog1;}
}下面是Form2事件的内容，这个是替换的对话框
下面是代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace 记事本开发1._0
{public partial class Form2 : Form{public Form2(){InitializeComponent();}public string chazhaowenben;public int index;public int lastindex;public int guangbiaoweizhi;public string jishiwenben;private void label1_Click(object sender, EventArgs e){}private void label2_Click(object sender, EventArgs e){}private void button1_Click(object sender, EventArgs e){Form1 form1 = (Form1)this.Owner;jishiwenben = form1.textBox1.Text;chazhaowenben = textBox1.Text;if (checkBox1.Checked == true){index = jishiwenben.IndexOf(chazhaowenben);}else{index = jishiwenben.IndexOf(chazhaowenben, form1.guangbiao,StringComparison.CurrentCultureIgnoreCase);}Console.WriteLine(index);if (index == -1){MessageBox.Show(string.Format("查不到 {0}/或已经到文件末尾", chazhaowenben));}else{form1.textBox1.Select(index, chazhaowenben.Length);form1.textBox1.Focus();form1.guangbiao = index + chazhaowenben.Length;} }private void button2_Click(object sender, EventArgs e){Form1 form1 = (Form1)this.Owner;if (textBox2.Text != ""){form1.textBox1.SelectedText = textBox2.Text;}else{MessageBox.Show(null, "你还没有输入替换内容", "提示");}}private void button3_Click(object sender, EventArgs e){Form1 form1 = (Form1)this.Owner;jishiwenben = form1.textBox1.Text;chazhaowenben = textBox1.Text;do{if (checkBox1.Checked == true){index = jishiwenben.IndexOf(chazhaowenben);}else{index = jishiwenben.IndexOf(chazhaowenben, form1.guangbiao, StringComparison.CurrentCultureIgnoreCase);}Console.WriteLine(index);if (index == -1){MessageBox.Show(string.Format("查不到 {0}/或已经到文件末尾", chazhaowenben));}else{form1.textBox1.Select(index, chazhaowenben.Length);form1.textBox1.Focus();form1.guangbiao = index + chazhaowenben.Length;}if (textBox2.Text != ""){form1.textBox1.SelectedText = textBox2.Text;}else{MessageBox.Show(null, "你还没有输入替换内容", "提示");break;}} while (index >= 0); }}
}
namespace 记事本开发1._0
{partial class Form2{/// <summary>/// Required designer variable./// </summary>private System.ComponentModel.IContainer components = null;/// <summary>/// Clean up any resources being used./// </summary>/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>protected override void Dispose(bool disposing){if (disposing && (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.label1 = new System.Windows.Forms.Label();this.label2 = new System.Windows.Forms.Label();this.textBox1 = new System.Windows.Forms.TextBox();this.textBox2 = new System.Windows.Forms.TextBox();this.button1 = new System.Windows.Forms.Button();this.button2 = new System.Windows.Forms.Button();this.button3 = new System.Windows.Forms.Button();this.button4 = new System.Windows.Forms.Button();this.checkBox1 = new System.Windows.Forms.CheckBox();this.SuspendLayout();// // label1// this.label1.AutoSize = true;this.label1.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.label1.Location = new System.Drawing.Point(12, 54);this.label1.Name = "label1";this.label1.Size = new System.Drawing.Size(125, 19);this.label1.TabIndex = 0;this.label1.Text = "查找内容(N):";this.label1.Click += new System.EventHandler(this.label1_Click);// // label2// this.label2.AutoSize = true;this.label2.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.label2.Location = new System.Drawing.Point(12, 96);this.label2.Name = "label2";this.label2.Size = new System.Drawing.Size(116, 19);this.label2.TabIndex = 1;this.label2.Text = "替换为(P): ";this.label2.Click += new System.EventHandler(this.label2_Click);// // textBox1// this.textBox1.Location = new System.Drawing.Point(143, 52);this.textBox1.Name = "textBox1";this.textBox1.Size = new System.Drawing.Size(216, 21);this.textBox1.TabIndex = 2;// // textBox2// this.textBox2.Location = new System.Drawing.Point(143, 99);this.textBox2.Name = "textBox2";this.textBox2.Size = new System.Drawing.Size(216, 21);this.textBox2.TabIndex = 3;// // button1// this.button1.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.button1.Location = new System.Drawing.Point(386, 45);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(153, 28);this.button1.TabIndex = 4;this.button1.Text = "查找下一项(F)";this.button1.UseVisualStyleBackColor = true;this.button1.Click += new System.EventHandler(this.button1_Click);// // button2// this.button2.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.button2.Location = new System.Drawing.Point(386, 96);this.button2.Name = "button2";this.button2.Size = new System.Drawing.Size(153, 34);this.button2.TabIndex = 5;this.button2.Text = "替换(R)";this.button2.UseVisualStyleBackColor = true;this.button2.Click += new System.EventHandler(this.button2_Click);// // button3// this.button3.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.button3.Location = new System.Drawing.Point(386, 155);this.button3.Name = "button3";this.button3.Size = new System.Drawing.Size(153, 32);this.button3.TabIndex = 6;this.button3.Text = "全部替换(A)";this.button3.UseVisualStyleBackColor = true;this.button3.Click += new System.EventHandler(this.button3_Click);// // button4// this.button4.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.button4.Location = new System.Drawing.Point(389, 219);this.button4.Name = "button4";this.button4.Size = new System.Drawing.Size(150, 37);this.button4.TabIndex = 7;this.button4.Text = "取消";this.button4.UseVisualStyleBackColor = true;// // checkBox1// this.checkBox1.AutoSize = true;this.checkBox1.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));this.checkBox1.Location = new System.Drawing.Point(14, 243);this.checkBox1.Name = "checkBox1";this.checkBox1.Size = new System.Drawing.Size(153, 23);this.checkBox1.TabIndex = 8;this.checkBox1.Text = "区别大小写(C)";this.checkBox1.UseVisualStyleBackColor = true;// // Form2// this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;this.ClientSize = new System.Drawing.Size(571, 328);this.Controls.Add(this.checkBox1);this.Controls.Add(this.button4);this.Controls.Add(this.button3);this.Controls.Add(this.button2);this.Controls.Add(this.button1);this.Controls.Add(this.textBox2);this.Controls.Add(this.textBox1);this.Controls.Add(this.label2);this.Controls.Add(this.label1);this.Name = "Form2";this.Text = "替换";this.ResumeLayout(false);this.PerformLayout();}#endregionprivate System.Windows.Forms.Label label1;private System.Windows.Forms.Label label2;private System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.TextBox textBox2;private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;private System.Windows.Forms.Button button3;private System.Windows.Forms.Button button4;private System.Windows.Forms.CheckBox checkBox1;}
}下面是Form3 的事件内容，为查找框里面的内容
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace 记事本开发1._0
{public partial class Form3 : Form{public Form3(){InitializeComponent();}public string chazhaowenben;public int index;public int lastindex;public int guangbiaoweizhi;public string jishiwenben;private void button1_Click(object sender, EventArgs e){Form1 form1 = (Form1)this.Owner;jishiwenben = form1.textBox1.Text;chazhaowenben = textBox1.Text; if (checkBox1.Checked == true){index = jishiwenben.IndexOf(chazhaowenben);}else{index = jishiwenben.IndexOf(chazhaowenben, form1.guangbiao, StringComparison.CurrentCultureIgnoreCase);}if (index == -1){MessageBox.Show(string.Format("查不到 {0}/或已经到文件末尾", chazhaowenben));}else{form1.textBox1.Select(index,chazhaowenben.Length);form1.textBox1.Focus();form1.guangbiao = index + chazhaowenben.Length;}}}
}
namespace 记事本开发1._0
{partial class Form3{/// <summary>/// Required designer variable./// </summary>private System.ComponentModel.IContainer components = null;/// <summary>/// Clean up any resources being used./// </summary>/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>protected override void Dispose(bool disposing){if (disposing && (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.label1 = new System.Windows.Forms.Label();this.textBox1 = new System.Windows.Forms.TextBox();this.button1 = new System.Windows.Forms.Button();this.button2 = new System.Windows.Forms.Button();this.checkBox1 = new System.Windows.Forms.CheckBox();this.groupBox1 = new System.Windows.Forms.GroupBox();this.radioButton2 = new System.Windows.Forms.RadioButton();this.radioButton1 = new System.Windows.Forms.RadioButton();this.groupBox1.SuspendLayout();this.SuspendLayout();// // label1// this.label1.AutoSize = true;this.label1.Location = new System.Drawing.Point(23, 21);this.label1.Name = "label1";this.label1.Size = new System.Drawing.Size(77, 12);this.label1.TabIndex = 0;this.label1.Text = "查找内容(N):";// // textBox1// this.textBox1.Location = new System.Drawing.Point(106, 12);this.textBox1.Name = "textBox1";this.textBox1.Size = new System.Drawing.Size(232, 21);this.textBox1.TabIndex = 1;// // button1// this.button1.Location = new System.Drawing.Point(358, 10);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(95, 23);this.button1.TabIndex = 2;this.button1.Text = "查找下一项(F)";this.button1.UseVisualStyleBackColor = true;this.button1.Click += new System.EventHandler(this.button1_Click);// // button2// this.button2.Location = new System.Drawing.Point(358, 48);this.button2.Name = "button2";this.button2.Size = new System.Drawing.Size(95, 25);this.button2.TabIndex = 3;this.button2.Text = "取消";this.button2.UseVisualStyleBackColor = true;// // checkBox1// this.checkBox1.AutoSize = true;this.checkBox1.Location = new System.Drawing.Point(24, 113);this.checkBox1.Name = "checkBox1";this.checkBox1.Size = new System.Drawing.Size(102, 16);this.checkBox1.TabIndex = 4;this.checkBox1.Text = "区分大小写(C)";this.checkBox1.UseVisualStyleBackColor = true;// // groupBox1// this.groupBox1.Controls.Add(this.radioButton2);this.groupBox1.Controls.Add(this.radioButton1);this.groupBox1.Location = new System.Drawing.Point(138, 60);this.groupBox1.Name = "groupBox1";this.groupBox1.Size = new System.Drawing.Size(200, 100);this.groupBox1.TabIndex = 5;this.groupBox1.TabStop = false;this.groupBox1.Text = "方向";// // radioButton2// this.radioButton2.AutoSize = true;this.radioButton2.Checked = true;this.radioButton2.Location = new System.Drawing.Point(115, 51);this.radioButton2.Name = "radioButton2";this.radioButton2.Size = new System.Drawing.Size(59, 16);this.radioButton2.TabIndex = 1;this.radioButton2.TabStop = true;this.radioButton2.Text = "向下()";this.radioButton2.UseVisualStyleBackColor = true;// // radioButton1// this.radioButton1.AutoSize = true;this.radioButton1.Location = new System.Drawing.Point(17, 49);this.radioButton1.Name = "radioButton1";this.radioButton1.Size = new System.Drawing.Size(65, 16);this.radioButton1.TabIndex = 0;this.radioButton1.Text = "向上(U)";this.radioButton1.UseVisualStyleBackColor = true;// // Form3// this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;this.ClientSize = new System.Drawing.Size(477, 172);this.Controls.Add(this.groupBox1);this.Controls.Add(this.checkBox1);this.Controls.Add(this.button2);this.Controls.Add(this.button1);this.Controls.Add(this.textBox1);this.Controls.Add(this.label1);this.Name = "Form3";this.Text = "查找";this.groupBox1.ResumeLayout(false);this.groupBox1.PerformLayout();this.ResumeLayout(false);this.PerformLayout();}#endregionprivate System.Windows.Forms.Label label1;private System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;private System.Windows.Forms.CheckBox checkBox1;private System.Windows.Forms.GroupBox groupBox1;private System.Windows.Forms.RadioButton radioButton2;private System.Windows.Forms.RadioButton radioButton1;}
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