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;

namespace?WindowsFormsApplication9
{
????public?partial?class?Form1?:?Form
????{
????????bool?change?=?false;
????????public?static?Form1?f1;
????????Form3?f3?=?new?Form3（）;
????????
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????f1?=?this;
????????}
????????public?int?myfind（int?mypoint?string?oldstring）????????//查找內容所在的位置，并返回位置，找不到則返回-1
????????{
????????????if?（richTextBox1.Text.Contains（oldstring））
????????????{
????????????????return?richTextBox1.Find（oldstring?mypoint?RichTextBoxFinds.None）;
????????????}
????????????else
????????????{
????????????????MessageBox.Show（“查找的內容不存在！“）;
????????????????return?-1;
????????????}
????????}
????????public?void?myreplace（string?oldstring?string?newstring?bool?quanbu）??//替換。quanbu的真假來判斷是否要進行全部替換
????????{
???????????if?（quanbu）
??????????????richTextBox1.Text?=?richTextBox1.Text.Replace（oldstring?newstring）;
???????????else
???????????{
???????????????if?（richTextBox1.SelectedText?==?““）
???????????????{
???????????????????MessageBox.Show（“查找的內容不存在！“）;
???????????????????return;
???????????????}
???????????????else
???????????????????richTextBox1.SelectedText?=?newstring;
????????????}??????????
????????}
????????private?void?新建ToolStripMenuItem_Click（object?sender?EventArgs?e）
????????{
????????????if?（change）
????????????{
????????????????DialogResult?dr=MessageBox.Show（“是否保存？“?“提示“?MessageBoxButtons.YesNo?MessageBoxIcon.Warning）;
????????????????if?（dr?==?DialogResult.Yes）
????????????????{
????????????????????if?（saveFileDialog1.ShowDialog（）?==?DialogResult.OK?&&?saveFileDialog1.FileName?!=?null）
????????????????????????richTextBox1.LoadFile（saveFileDialog1.FileName?RichTextBoxStreamType.RichText）;
????????????????????change?=?false;
????????????????}
????????????????else??{?richTextBox1.Clear（）;?change?=?false;?}
????????????????
????????????}
????????}

????????private?void?richTextBox1_TextChanged（object?sender?EventArgs?e）
????????{
????????????change?=?true;
????????????if?（richTextBox1.Text?==?““）
????????????{
????????????????撤銷ToolStripMenuItem1.Enabled?=?false;
????????????????查找ToolStripMenuItem.Enabled?=?false;
????????????????替換ToolStripMenuItem.Enabled?=?false;
????????????????撤銷ToolStripMenuItem2.Enabled?=?false;
????????????????復制ToolStripMenuItem.Enabled?=?false;
????????????????復制ToolStripMenuItem1.Enabled?=?false;
????????????????全選ToolStripMenuItem.Enabled?=?false;
????????????????全選ToolStripMenuItem1.Enabled?=?false;
????????????????刪除ToolStripMenuItem.Enabled?=?false;
????????????????刪除ToolStripMenuItem.Enabled?=?false;
????????????????剪切ToolStripMenuItem.Enabled?=?false;
????????????????剪切ToolStripMenuItem1.Enabled?=?false;
????????????????

????????????}
????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-05-29?13:48??記事本\
?????目錄???????????0??2011-05-29?15:10??記事本\WindowsFormsApplication9\
?????文件?????????884??2011-05-19?00:25??記事本\WindowsFormsApplication9.sln
?????文件???????26112??2011-06-04?22:45??記事本\WindowsFormsApplication9.suo
?????目錄???????????0??2011-05-29?13:48??記事本\WindowsFormsApplication9\bin\
?????目錄???????????0??2011-05-29?13:48??記事本\WindowsFormsApplication9\bin\Debug\
?????文件???????23552??2011-06-04?22:44??記事本\WindowsFormsApplication9\bin\Debug\WindowsFormsApplication9.exe
?????文件???????46592??2011-06-04?22:44??記事本\WindowsFormsApplication9\bin\Debug\WindowsFormsApplication9.pdb
?????文件???????11600??2011-06-04?22:45??記事本\WindowsFormsApplication9\bin\Debug\WindowsFormsApplication9.vshost.exe
?????文件?????????490??2009-08-31?00:40??記事本\WindowsFormsApplication9\bin\Debug\WindowsFormsApplication9.vshost.exe.manifest
?????文件????????8457??2011-06-04?22:44??記事本\WindowsFormsApplication9\Form1.cs
?????文件???????21739??2011-06-04?22:21??記事本\WindowsFormsApplication9\Form1.Designer.cs
?????文件????????7425??2011-06-04?15:46??記事本\WindowsFormsApplication9\Form1.resx
?????文件?????????374??2011-06-04?15:26??記事本\WindowsFormsApplication9\Form2.cs
?????文件????????4729??2011-06-04?15:26??記事本\WindowsFormsApplication9\Form2.Designer.cs
?????文件????????5817??2011-06-04?15:26??記事本\WindowsFormsApplication9\Form2.resx
?????文件????????1717??2011-06-04?22:44??記事本\WindowsFormsApplication9\Form3.cs
?????文件????????6134??2011-06-04?22:31??記事本\WindowsFormsApplication9\Form3.Designer.cs
?????文件????????5817??2011-06-04?22:31??記事本\WindowsFormsApplication9\Form3.resx
?????目錄???????????0??2011-05-29?13:48??記事本\WindowsFormsApplication9\obj\
?????目錄???????????0??2011-05-29?13:48??記事本\WindowsFormsApplication9\obj\x86\
?????目錄???????????0??2011-06-04?22:44??記事本\WindowsFormsApplication9\obj\x86\Debug\
?????文件????????4440??2011-05-18?21:02??記事本\WindowsFormsApplication9\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????6335??2011-06-04?22:44??記事本\WindowsFormsApplication9\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件????????1314??2011-06-04?22:34??記事本\WindowsFormsApplication9\obj\x86\Debug\GenerateResource.read.1.tlog
?????文件????????4710??2011-06-04?22:34??記事本\WindowsFormsApplication9\obj\x86\Debug\GenerateResource.write.1.tlog
?????文件????????7897??2011-05-18?21:14??記事本\WindowsFormsApplication9\obj\x86\Debug\ResolveAssemblyReference.cache
?????目錄???????????0??2011-05-29?13:48??記事本\WindowsFormsApplication9\obj\x86\Debug\TempPE\
?????文件????????1296??2011-05-18?23:42??記事本\WindowsFormsApplication9\obj\x86\Debug\WindowsFormsApplication9.csproj.FileListAbsolute.txt
?????文件???????23552??2011-06-04?22:44??記事本\WindowsFormsApplication9\obj\x86\Debug\WindowsFormsApplication9.exe
?????文件?????????180??2011-06-04?21:39??記事本\WindowsFormsApplication9\obj\x86\Debug\WindowsFormsApplication9.Form1.resources
............此處省略13個文件信息