自定义ComboBox控件美化了combobox控件

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
//Download by http://www.codefans.net
namespace BeautifyComboBox
{
    public partial class B_ComboBox : ComboBox
    {
        public B_ComboBox（）
        {
            InitializeComponent（）;
            this.DrawMode = DrawMode.OwnerDrawFixed;
            //this.DrawItem += new System.Windows.Forms.DrawItemEventHandler（this.ListBox_DrawItem）;
        }

        #region 变量
        private static Brush[] listBoxBrushes;//该数组用来存储绘制listBox1背景的Brush对象
        private static int place = -1;//颜色位置的取值
        private static bool naught = true;//判断是否重绘
       

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-09-16 08:17  .vs\
     目录           0  2019-09-16 08:17  .vs\BeautifyComboBox\
     目录           0  2019-09-16 08:17  .vs\BeautifyComboBox\v15\
     文件       33792  2019-09-16 08:27  .vs\BeautifyComboBox\v15\.suo
     目录           0  2019-09-16 08:17  .vs\BeautifyComboBox\v15\Server\
     目录           0  2019-09-16 08:17  .vs\BeautifyComboBox\v15\Server\sqlite3\
     文件           0  2019-09-16 08:17  .vs\BeautifyComboBox\v15\Server\sqlite3\db.lock
     文件        4096  2019-09-16 08:17  .vs\BeautifyComboBox\v15\Server\sqlite3\storage.ide
     文件       32768  2019-09-16 08:17  .vs\BeautifyComboBox\v15\Server\sqlite3\storage.ide-shm
     文件      638632  2019-09-16 08:24  .vs\BeautifyComboBox\v15\Server\sqlite3\storage.ide-wal
     目录           0  2019-09-16 08:17  Backup\
     目录           0  2019-09-16 08:17  Backup\BeautifyComboBox\
     文件        1225  2009-02-12 14:48  Backup\BeautifyComboBox\B_ComboBox.Designer.cs
     文件        5826  2013-01-12 21:16  Backup\BeautifyComboBox\B_ComboBox.cs
     文件        5995  2009-02-12 14:48  Backup\BeautifyComboBox\B_ComboBox.resx
     文件        4112  2009-02-12 14:50  Backup\BeautifyComboBox\BeautifyComboBox.csproj
     文件        2641  2009-02-12 14:50  Backup\BeautifyComboBox\Form1.Designer.cs
     文件         403  2013-01-12 21:16  Backup\BeautifyComboBox\Form1.cs
     文件        5814  2009-02-12 14:50  Backup\BeautifyComboBox\Form1.resx
     文件         534  2013-01-12 21:16  Backup\BeautifyComboBox\Program.cs
     目录           0  2019-09-16 08:17  Backup\BeautifyComboBox\Properties\
     文件        1364  2009-02-12 14:47  Backup\BeautifyComboBox\Properties\AssemblyInfo.cs
     文件        2882  2009-02-12 14:47  Backup\BeautifyComboBox\Properties\Resources.Designer.cs
     文件        5612  2009-02-12 14:47  Backup\BeautifyComboBox\Properties\Resources.resx
     文件        1101  2010-08-18 17:50  Backup\BeautifyComboBox\Properties\Settings.Designer.cs
     文件         249  2009-02-12 14:47  Backup\BeautifyComboBox\Properties\Settings.settings
     文件         938  2009-02-12 14:47  Backup\BeautifyComboBox.sln
     目录           0  2019-09-16 08:24  BeautifyComboBox\
     文件        1225  2009-02-12 14:48  BeautifyComboBox\B_ComboBox.Designer.cs
     文件        5787  2019-09-16 08:24  BeautifyComboBox\B_ComboBox.cs
     文件        5995  2009-02-12 14:48  BeautifyComboBox\B_ComboBox.resx
............此处省略32个文件信息