C#+MO实现一些渲染功能

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace DbInMo
{
     /// <summary>
     /// Form1 的摘要说明。
     /// </summary>
     public class 渲染示例 : System.Windows.Forms.Form
     {
          private AxMapObjects2.AxMap map;
          private System.Windows.Forms.Button 直方图;
          private System.Windows.Forms.Button 饼图;
          private System.Windows.Forms.Button 点密度;
          private System.Windows.Forms.Button 按值渲染;
          private System.Windows.Forms.Button 分类渲染;
          private System.Windows.Forms.Button Z值渲染;
          private System.Windows.Forms.Button 组渲染;
          private System.Windows.Forms.Button 退出;
          private System.Windows.Forms.Panel 操作板;
          private System.Windows.Forms.Button 删除所有渲染;
          private System.Windows.Forms.Panel panel1;
          private System.Windows.Forms.Button 全图;
          private System.Windows.Forms.Button 拖动;
          private System.Windows.Forms.Button 缩小;
          private System.Windows.Forms.Button 放大;
          private System.Windows.Forms.Panel 分隔符;
          private System.Windows.Forms.Button 标注渲染;
         /// <summary>
         /// 必需的设计器变量。
         /// </summary>
          private System.ComponentModel.Container components = null;
         public 渲染示例()
         {
              //
              // 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
              //
         }
         /// <summary>
         /// 清理所有正在使用的资源。
         /// </summary>
          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
         /// <summary>
         /// 设计器支持所需的方法 - 不要使用代码编辑器修改
         /// 此方法的内容。
         /// </summary>
          private void InitializeComponent()
         {
              System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(渲染示例));
              this.map = new AxMapObjects2.AxMap();
              this.操作板 = new System.Windows.Forms.Panel();
              this.直方图 = new System.Windows.Forms.Button();
              this.饼图 = new System.Windows.Forms.Button();
              this.点密度 = new System.Windows.Forms.Button();
              this.按值渲染 = new System.Windows.Forms.Button();
              this.分类渲染 = new System.Windows.Forms.Button();
              this.Z值渲染 = new System.Windows.Forms.Button();
              this.组渲染 = new System.Windows.Forms.Button();
              this.退出 = new System.Windows.Forms.Button();