完美实现ComBox多列下拉框+自动完成+DataGridView自定义列

灵活：数据源、下拉框内显示的列、列名、可搜索关键字等可自由定义 方便：可输可选/支持键盘操作/模糊过滤/自动完成匹配 标准：通过继承combobox实现，可单独使用，也可嵌入datagridview使用 水平有限，欢迎大家多提宝贵意见，共同学习 QQ：41357935 本控件以“随风飘散”在 http://www.cnblogs.com/CodeAnyWhere/archive/2007/09/03/880780.html中的示例代码为基础改进而来，在此感谢！.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Design;

namespace LWQ.MyControl
{
    public class DataGridViewDataWindowCell:DataGridViewTextBoxCell
    {
        public override void InitializeEditingControl（int rowIndex object
              initialFormattedValue DataGridViewCellstyle dataGridViewCellstyle）
        {
            base.InitializeEditingControl（rowIndex initialFormattedValue
                dataGridViewCellstyle）;
            DataGridViewDataWindowEditingControl dataWindowControl =
                DataGridView.EditingControl as DataGridViewDataWindowEditingControl;
            dataWindowControl.PopupGridAutoSize = false;
            DataGridViewDataWindowColumn dataWindowColumn=
                （DataGridViewDataWindowColumn）OwningColumn;

            dataWindowControl.sDisplayMember = dataWindowColumn.SDisplayMember;//以下3句必须放在datasource设置前面
            dataWindowControl.sDisplayField = dataWindowColumn.SDisplayField;
            dataWindowControl.sKeyWords = dataWindowColumn.SKeyWords;

            dataWindowControl.DataSource = dataWindowColumn.DataSource;

            dataWindowControl.Text = （string）this.Value;
            dataWindowControl.RowFilterVisible = true;  //此句必须放在datasource设置后面

            
        }



        [Browsable（false）]
        public override Type EditType
        {
            get
            {
                return typeof（DataGridViewDataWindowEditingControl）;
            }
        }
       
        public override Type ValueType
        {
            get
            {
                return typeof（string）;
            }
        }
        private DataGridViewDataWindowEditingControl EditingDataWindow
        {
            get
            {
                DataGridViewDataWindowEditingControl dataWindowControl =
                    DataGridView.EditingControl as DataGridViewDataWindowEditingControl;

                return dataWindowControl;
            }
        }

       
    }

    
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2012-06-07 11:15  WindowsFormsApplication2\
     文件         962  2012-06-05 14:43  WindowsFormsApplication2.sln
     目录           0  2012-06-07 11:15  WindowsFormsApplication2\bin\
     目录           0  2012-06-07 11:15  WindowsFormsApplication2\bin\Debug\
     文件       28672  2012-06-07 11:15  WindowsFormsApplication2\bin\Debug\WindowsFormsApplication2.exe
     文件       67072  2012-06-07 11:15  WindowsFormsApplication2\bin\Debug\WindowsFormsApplication2.pdb
     文件       14328  2012-06-05 14:43  WindowsFormsApplication2\bin\Debug\WindowsFormsApplication2.vshost.exe
     文件         490  2009-06-11 05:14  WindowsFormsApplication2\bin\Debug\WindowsFormsApplication2.vshost.exe.manifest
     文件        2199  2012-06-05 14:44  WindowsFormsApplication2\DataGridViewDataWindowCell.cs
     文件        2109  2012-06-05 14:44  WindowsFormsApplication2\DataGridViewDataWindowColumn.cs
     文件        4729  2012-06-05 14:44  WindowsFormsApplication2\DataGridViewDataWindowEditingControl.cs
     文件       18005  2012-06-07 10:15  WindowsFormsApplication2\DataWindow.cs
     文件        6454  2012-06-07 11:15  WindowsFormsApplication2\Form1.cs
     文件       12323  2012-06-07 11:15  WindowsFormsApplication2\Form1.Designer.cs
     文件        5814  2012-06-07 11:15  WindowsFormsApplication2\Form1.resx
     目录           0  2012-06-05 14:43  WindowsFormsApplication2\obj\
     目录           0  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\
     目录           0  2012-06-07 10:22  WindowsFormsApplication2\obj\Debug\Refactor\
     目录           0  2012-06-05 14:43  WindowsFormsApplication2\obj\Debug\TempPE\
     文件        1235  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\WindowsFormsApplication2.csproj.FileListAbsolute.txt
     文件         847  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\WindowsFormsApplication2.csproj.GenerateResource.Cache
     文件       28672  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\WindowsFormsApplication2.exe
     文件         180  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\WindowsFormsApplication2.Form1.resources
     文件       67072  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\WindowsFormsApplication2.pdb
     文件         180  2012-06-07 11:15  WindowsFormsApplication2\obj\Debug\WindowsFormsApplication2.Properties.Resources.resources
     文件         505  2012-06-05 14:43  WindowsFormsApplication2\Program.cs
     目录           0  2012-06-05 14:43  WindowsFormsApplication2\Properties\
     文件        1380  2012-06-05 14:43  WindowsFormsApplication2\Properties\AssemblyInfo.cs
     文件        2898  2012-06-05 14:43  WindowsFormsApplication2\Properties\Resources.Designer.cs
     文件        5612  2012-06-05 14:43  WindowsFormsApplication2\Properties\Resources.resx
     文件        1109  2012-06-05 14:43  WindowsFormsApplication2\Properties\Settings.Designer.cs
............此处省略2个文件信息