C# 记事本代码 using System; using System.Collections.Ge

文件名称: C# 记事本代码

所属分类: C#

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文件大小: 10kb

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上传时间: 2019-04-23

提供者: qq_39******

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详细说明： using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; namespace Mickey记事本 { public partial class Form1 : Form { public Form1() { InitializeComponent() ; } // 用于存储当前操作的文件的名称 private string textFileName = ""; private string filePath = ""; private void 新建_Click(object sender, EventArgs e) { textFileName = ""; // 新建一个文本时，若输入框中的内容不为空，应先提示“是否保存” if (inputInfo.Text != string.Empty) { // 若用户选择“是”，应弹出保存文件的对话框 if (MessageBox.Show("是否保存当前文件？", "Mickey温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information) == DialogResult.Yes) { // 保存文件 Save(); Text = "新建-Mickey记事本"; inputInfo.Text = ""; } else if (MessageBox.Show("是否保存当前文件？", "Mickey温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information) == DialogResult.No) { // 用户选择不保存时将输入框中的内容清除 inputInfo.Text = ""; } } } private void 打开_Click(object sender, EventArgs e) { OpenFileDialog openFile = new OpenFileDialog(); openFile.Filter = "文本文件(*.txt)|*.txt"; if (openFile.ShowDialog() == DialogResult.OK) { StreamReader sr = new StreamReader(openFile.FileName); inputInfo.Text = sr.ReadToEnd(); sr.Close(); FileInfo fileInfo = new FileInfo(openFile.FileName); // 把标题改为打开的文件的名称 Text = "*" + fileInfo.Name + "-Mickey记事本"; textFileName = fileInfo.Name; } } private void 保存_Click(object sender, EventArgs e) { Save(); } // “保存” private void Save() { if (!textFileName.Equals("")) { SaveFileDialog saveFile = new SaveFileDialog(); // 默认保存格式 saveFile.Filter = "文本文件(*.txt)|*.txt"; StreamWriter sw = new StreamWriter(filePath, false); sw.Write(inputInfo.Text); sw.Close(); MessageBox.Show("文件保存成功！", "Mickey温馨提示"); filePath = saveFile.FileName; // 把标题改为打开的文件的名称 Text = textFileName + "-Mickey记事本"; } else { // 成员变量为“”，说明文件第一次保存，执行“另存为”操作 HoldFile(); } } private void HoldFile() { // 若用户选择另保存文件 SaveFileDialog saveFile = new SaveFileDialog(); // 默认保存格式 saveFile.Filter = "文本文件(*.txt)|*.txt"; if (saveFile.ShowDialog() == DialogResult.OK) { StreamWriter sw = new StreamWriter(saveFile.FileName, false); sw.WriteLine(inputInfo.Text); sw.Close(); MessageBox.Show("文件保存成功！", "Mickey温馨提示"); filePath = saveFile.FileName; } // 判断是第一次保存还是第二次 if (textFileName.Equals("")) { FileInfo fileInfo = new FileInfo(saveFile.FileName); Text = fileInfo.Name + "-Mickey记事本"; textFileName = fileInfo.Name; } else { // 把标题改为打开的文件的名称 Text = textFileName + "-Mickey记事本"; } } private void 另存为_Click(object sender, EventArgs e) { HoldFile(); } private void 页面设置_Click(object sender, EventArgs e) { this.pageSetupDialog1.Document = this.printDocument1; pageSetupDialog1.ShowDialog(); } private void 打印_Click(object sender, EventArgs e) { if (inputInfo.Text.Length < 1) { MessageBox.Show("请确保要打印的文件的内容不为空！", "Mickey温馨提示"); return; } else { // 设置Document的属性 this.printDialog1.Document = this.printDocument1; this.printDialog1.PrinterSettings = this.pageSetupDialog1.PrinterSettings; if (this.printDialog1.ShowDialog() == DialogResult.OK) { try { this.printDocument1.Print(); } catch (Exception ex) { MessageBox.Show(ex.Message, "错误信息", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } } private void 退出_Click(object sender, EventArgs e) { // 退出时应提示用户是否保存当前文本文件 DialogResult result = MessageBox.Show("是否将更改保存？", "Mickey温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information); if (result == DialogResult.Yes) { Save(); Application.Exit(); } else if (result == DialogResult.No) { Application.Exit(); } } // 这个成员变量用来存储用户选择进行操作的字符串 private string selectedInfo = ""; private void 编辑_Click(object sender, EventArgs e) { if ((inputInfo.SelectedText.Equals("")) && (selectedInfo.Equals(""))) { 剪切.Enabled = false; 复制.Enabled = false; 粘贴.Enabled = false; 删除.Enabled = false; } else { 剪切.Enabled = true; 复制.Enabled = true; 粘贴.Enabled = true; 删除.Enabled = true; } } private void 撤销_Click(object sender, EventArgs e) { this.inputInfo.Undo(); } private void 剪切_Click(object sender, EventArgs e) { selectedInfo = inputInfo.SelectedText; this.inputInfo.Cut(); } private void 复制_Click(object sender, EventArgs e) { this.inputInfo.Copy(); } private void 粘贴_Click(object sender, EventArgs e) { this.inputInfo.Paste(); } private void 删除_Click(object sender, EventArgs e) { this.inputInfo.SelectedText = ""; } private void 查找_Click(object sender, EventArgs e) { if (inputInfo.Text == string.Empty) { MessageBox.Show("请确保要查找的文件的内容不为空！", "Mickey温馨提示"); } else { //Form2 fr2 = new Form2(); //fr2.sender(this); //fr2.Show(); } } private void 查找下一个_Click(object sender, EventArgs e) { } private void 全选_Click(object sender, EventArgs e) { this.inputInfo.SelectAll(); //全选_Click(sender,e); } private void 时间日期_Click(object sender, EventArgs e) { inputInfo.Text += "现在时间是:" + DateTime.Now.ToString(); } private void 自动换行_Click(object sender, EventArgs e) { if (自动换行.Checked == true) { inputInfo.WordWrap = true; } else { inputInfo.WordWrap = false; } } private void 字体_Click(object sender, EventArgs e) { FontDialog fontDialog = new FontDialog(); if (fontDialog.ShowDialog() == DialogResult.OK) { inputInfo.Font = fontDialog.Font; } } private void 查看_Click(object sender, EventArgs e) { if (inputInfo.Text.Length > 0) { 状态栏.Enabled = true; } else { 状态栏.Enabled = false; } } private void 状态栏_Click(object sender, EventArgs e) { if (状态栏.Checked == true) { 状态栏.Checked = false; statusStrip1.Visible = false; } else { 状态栏.Checked = true; statusStrip1.Visible = true; } } private void 查看帮助_Click(object sender, EventArgs e) { string help = "C:\Users\狗狗Mickey\Desktop\help.txt"; Help.ShowHelp(this, help); } private void 关于记事本_Click(object sender, EventArgs e) { AboutBox1 about = new AboutBox1(); about.Show(); } } }

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