Question

C#.net在在window forms窗体设计中怎么实现记事本的查找和替换功能

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Text;
namespace WindowsApplication6
{
public partial class Form1 : Form
{

public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
{

}

private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "(*.txt)|*.txt|(*.rtf)|*.rtf|All File(*.*)|*.*";
openFileDialog1.FilterIndex = 1;
openFileDialog1.ShowDialog();
richTextBox1.LoadFile(openFileDialog1.FileName, RichTextBoxStreamType.PlainText);

}

private void 结束ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}

private void 字体ToolStripMenuItem_Click(object sender, EventArgs e)
{

fontDialog1.ShowDialog();
richTextBox1.SelectionFont = fontDialog1.Font;
}

private void 颜色ToolStripMenuItem_Click(object sender, EventArgs e)
{
colorDialog1.ShowDialog();
richTextBox1.SelectionColor = colorDialog1.Color;

}

private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)
{

}

private void 替换ToolStripMenuItem_Click(object sender, EventArgs e)
{

}

}
}

private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)
{
这里怎么写啊？

}

private void 替换ToolStripMenuItem_Click(object sender, EventArgs e)
{
这里怎么写啊？
}

Answer 1

给你个思路吧 查找的时候弹出一个子窗体。子窗体提供一个textbox和一个查找button，让用户输入查找的内容，点击按钮后开始查找。然后就在记事本中查找用户输入的内容，找到的话，提供焦点，并且选中。
替换和茶渣差不多，要再提供一个输入口，输入要替换为什么，找到之后的处理多了一个，将找到的内容赋值为要替换的

Answer 2

richTextBox.SelectionStart = indexList[0];
richTextBox.SelectionLength = length;
看看那2个属性.选择了.开始和结束的就标绿了.