C#记事本的简单开发

分手后的思念是犯贱 2022-04-14 04:45 155阅读 0赞

**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();
    
            }
    
            #endregion
    
            private 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

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();
    
            }
    
            #endregion
    
            private 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 #

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();
    
            }
    
            #endregion
    
            private 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;
        }
    }