源文件内容:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace wzy2
{
 /// 
 /// Form1 的摘要说明。
 /// 
 public class Form1 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.Button button2;
  private System.Windows.Forms.Button button3;
  private System.Windows.Forms.RichTextBox richTextBox1;
  private System.Windows.Forms.RichTextBox richTextBox2;
  private System.Windows.Forms.OpenFileDialog openFileDialog1;
  private System.Windows.Forms.SaveFileDialog saveFileDialog1;
  
  /// 
  /// 必需的设计器变量。
  /// 
  private System.ComponentModel.Container components = null;
  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();
   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }
  /// 
  /// 清理所有正在使用的资源。
  /// 
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null) 
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }
  #region Windows 窗体设计器生成的代码
  ///