C# richtextbox中加载了如下代码，从第一个字母开始，到最后一个结束，搜索字符串，并设置特殊字符串的颜色

[sky-defender]

using System;
using System.Collections;
using System.Runtime.InteropServices;

namespace SmartRunner.Schedule
{
/// <summary>
/// Deprecated. For V1 compatibility only.
/// </summary>
/// <remarks>
/// <p>Scheduler is just a wrapper around the TaskList class.</p>
/// <p><i>Provided for compatibility with version one of the library. Use of Scheduler
/// and TaskList will normally result in COM memory leaks.</i></p>
/// </remarks>
public class Scheduler
{
/// <summary>
/// Internal field which holds TaskList instance
/// </summary>
private readonly TaskList tasks = null;

/// <summary>
/// Creates instance of task scheduler on local machine
/// </summary>
public Scheduler()
{
tasks = new TaskList();
}

/// <summary>
/// Creates instance of task scheduler on remote machine
/// </summary>
/// <param name="computer">Name of remote machine</param>
public Scheduler(string computer)
{
tasks = new TaskList();
TargetComputer = computer;
}

/// <summary>
/// Gets/sets name of target computer. Null or emptry string specifies local computer.
/// </summary>
public string TargetComputer
{
get
{
return tasks.TargetComputer;
}
set
{
tasks.TargetComputer = value;
}
}

/// <summary>
/// Gets collection of system tasks
/// </summary>
public TaskList Tasks
{
get
{
return tasks;
}
}

}
}

[LixingTie]

int start = 0;
string findstr = "public";
while (true)
{
    start = this.richTextBox1.Find(findstr, start, RichTextBoxFinds.None);
    if (start == -1)
        break;

    this.richTextBox1.Select(start, findstr.Length);
    this.richTextBox1.SelectionColor = Color.Blue;
    start += findstr.Length;
}