Question

求c#记事本的源代码

Answer 1

private void fileNew_Click(object sender, EventArgs e)
{
if (textBox1.Modified == true)
{
DialogResult re = MessageBox.Show("文件" + Text + "的内容已改变，需要保存吗？", "保存文件", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
switch (re)
{
case DialogResult.Yes:
this.fileSave_Click(sender, e);
textBox1.Clear();
this.Text = "新建";
break;
case DialogResult.No:
textBox1.Clear();
this.Text = "新建";
break;
case DialogResult.Cancel:
break;
}
}
else
{
textBox1.Clear();
this.Text = "新建";
textBox1.Modified = false;
}
}
private void fileSave_Click(object sender, EventArgs e)
{
saveFileDialog1.Title = "保存";
saveFileDialog1.Filter = "文本文件|*.txt|Word文档|*.doc|网页文件|*.html|所有文件|*.*";
saveFileDialog1.FileName = "";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
using (StreamWriter sw = new StreamWriter(saveFileDialog1.FileName))
{
sw.Write(textBox1);
sw.Close();
textBox1.Modified = false;
this.Text =Path.GetFileNameWithoutExtension(saveFileDialog1.FileName) +"记事本";
}
}
}

Answer 2

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);
}
}
}
}