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?Text
{
????public?partial?class?Find?:?Form
????{
????????Form1?f1?=?new?Form1（）;
????????public?Find（Form1?fm）
????????{
????????????f1?=?fm;
????????????InitializeComponent（）;
????????}

????????private?void?Find_Load（object?sender?EventArgs?e）
????????{
????????????radioButton2.Checked?=?true;
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{


????????????if?（radioButton2.Checked?==?true）
????????????{
????????????????down（f1.richTextBox1?this.textBox1.Text?checkBox1.Checked）;
????????????????f1.richTextBox1.Focus（）;
????????????}
????????????else?if?（radioButton1.Checked?==?true）
????????????{
????????????????up（f1.richTextBox1?this.textBox1.Text?checkBox1.Checked）;
????????????????f1.richTextBox1.Focus（）;
????????????}



????????}


????????//向下查找
????????public?void?down（RichTextBox?text?string?test?bool?check）
????????{
????????????string?strDown?=?““;
????????????int?intCount?=?0i=0;
????????????if（check==false）??//不區分大小寫
????????????{
????????????????if?（text.SelectedText.ToUpper（）?==?test.ToUpper（））???//如果選中的文本等于需要替換的文本
????????????????{

????????????????????//從光標所在位置后一位開始截取后面的所有字符
????????????????????strDown?=?text.Text.Substring（text.Selectionstart?+?1?text.Text.Length?-?（text.Selectionstart+1））;??
????????????????}
????????????????else
????????????????{

????????????????????//從光標所在位置開始截取后面的所有字符
????????????????????strDown?=?text.Text.Substring（text.Selectionstart?text.Text.Length?-?text.Selectionstart）;
????????????????}
????????????????
????????????}
????????????else?if?（check?==?true）???//區分大小寫
????????????{
????????????????if?（text.SelectedText?==?test）??//如果選中的文本等于需要替換的文本
????????????????{

????????????????????//從光標所在位置后一位開始截取后面的所有字符
????????????????????strDown?=?text.Text.Substring（text.Selectionstart?+?1?text.Text.Length?-?（text.Selectionstart+1））;
????????????????}
????????????????else
????????????????{

????????????????????//從光標所在位置開始截取后面的所有字符
????????????????????strDown?=?text.Text.Substring（text.Selectionstart??text.Text.Length?-?text.Selectionstart）;
????????????????}
????????????}
????????????intCount?=?text.Text.Length?-?strDown.Length;??//存放除截取的字符數以外的字符數

?????????????//?i?+?test.Length（要查找的字符的長度）?的長度不得大于截取字符數的長度
????????????for?（i?=?0;?i+test.Length?<=?strDown.Length?;?i++）?
????????????{
????????????????if?（check?==?true）??//區分大小寫
????????????????{
????????????????????if?（strDown.Substring（i?test.Length）?==?test）??//截取的字符等于要查找的字符
????????????????????{
????????????????????????text.Selectionstart?=?i+intCount;???//設置光標的起始位置
????????????????????????text.SelectionLength?=?test.Length;???//設置文本的選定字符數
????????????????????????return;
????????????????????}
????????????????}
????????????????els

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-03-06?23:53??Text\
?????文件????????6793??2017-03-06?23:47??Text\QQ截圖20170306234653.jpg
?????文件???????21148??2017-03-06?23:53??Text\QQ截圖20170是.jpg
?????目錄???????????0??2017-03-06?23:52??Text\Text\
?????文件????????6579??2017-03-06?23:00??Text\Text\Find.Designer.cs
?????文件????????6656??2017-03-06?23:36??Text\Text\Find.cs
?????文件????????7764??2017-03-06?22:58??Text\Text\Find.resx
?????文件???????21221??2017-03-07?15:08??Text\Text\Form1.Designer.cs
?????文件????????4609??2017-03-07?15:08??Text\Text\Form1.cs
?????文件????????6825??2017-03-07?15:08??Text\Text\Form1.resx
?????文件????????2903??2017-03-06?23:57??Text\Text\Info.Designer.cs
?????文件?????????469??2017-03-06?23:56??Text\Text\Info.cs
?????文件????????6344??2017-03-06?23:56??Text\Text\Info.resx
?????文件?????????485??2017-03-01?11:06??Text\Text\Program.cs
?????目錄???????????0??2017-03-06?21:17??Text\Text\Properties\
?????文件????????1358??2017-03-01?10:01??Text\Text\Properties\AssemblyInfo.cs
?????文件????????3685??2017-03-06?23:53??Text\Text\Properties\Resources.Designer.cs
?????文件????????6769??2017-03-06?23:53??Text\Text\Properties\Resources.resx
?????文件????????1089??2017-03-01?10:01??Text\Text\Properties\Settings.Designer.cs
?????文件?????????249??2017-03-01?10:01??Text\Text\Properties\Settings.settings
?????文件????????6543??2017-03-06?23:32??Text\Text\Replace.Designer.cs
?????文件????????7282??2017-03-06?23:45??Text\Text\Replace.cs
?????文件????????7567??2017-03-06?23:32??Text\Text\Replace.resx
?????目錄???????????0??2017-03-06?23:53??Text\Text\Resources\
?????文件????????6793??2017-03-06?23:52??Text\Text\Resources\QQ截圖20170306234653.jpg
?????文件????????6793??2017-03-06?23:47??Text\Text\Resources\QQ截圖201703062346531.jpg
?????文件???????21148??2017-03-06?23:53??Text\Text\Resources\QQ截圖20170是.jpg
?????文件????????5186??2017-03-06?23:56??Text\Text\Text.csproj
?????文件????????8916??2017-03-04?14:39??Text\Text\ZiTi.Designer.cs
?????文件????????2769??2017-03-04?16:53??Text\Text\ZiTi.cs
?????文件????????5817??2017-03-04?14:39??Text\Text\ZiTi.resx
............此處省略61個文件信息