多列组合框控件MultiColumnComboBoxEx（1.2）源码与

MultiColumnComboBoxEx(1.2)主要功能：1）下拉框和文本框中显示多列；2）指定显示的列及其顺序；3）设定框高与项高；4）提供Items.IndexOf代替函数ItemIndexOf；5）支持RightToLeft(RTL)。具体实现请参考：http://blog.csdn.net/hulihui/archive/2009/02/01/3856824.aspx。

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

namespace TestComboBox
{
    public partial class Form1 : Form
    {
        DataTable dataTable;
        Student[] studentArray;
        List studentList;

        public Form1（）
        {
            InitializeComponent（）;
        }

        private void CreateDataSource（）
        {
            // Populate using a DataTable

            dataTable = new DataTable（“Employees“）;

            dataTable.Columns.Add（“Employee ID“ typeof（string））;
            dataTable.Columns.Add（“Name“ typeof（string））;
            dataTable.Columns.Add（“Job“ typeof（string））;

            dataTable.Rows.Add（new string[] { “D1“ “Natalia“ “Developer“ }）;
            dataTable.Rows.Add（new string[] { “D2“ “Jonathan“ “Developer“ }）;
            dataTable.Rows.Add（new string[] { “D3“ “Jake“ “Developer“ }）;
            dataTable.Rows.Add（new string[] { “D4“ “Abraham“ “Developer“ }）;
            dataTable.Rows.Add（new string[] { “T1“ “Mary“ “Team Lead“ }）;
            dataTable.Rows.Add（new string[] { “PM1“ “Calvin“ “Project Manager“ }）;
            dataTable.Rows.Add（new string[] { “T2“ “Sarah“ “Team Lead“ }）;
            dataTable.Rows.Add（new string[] { “D12“ “Monica“ “Developer“ }）;
            dataTable.Rows.Add（new string[] { “D13“ “Donna“ “Developer“ }）;

            multiColumnComboBoxEx1.DataSource = dataTable;
            multiColumnComboBoxEx1.DisplayMember = “Employee ID“;
            multiColumnComboBoxEx1.ValueMember = “Name“;

            // Populate using a collection

            studentArray = new Student[] 
            { 
                new Student（“Andrew White“ 10） new Student（“Thomas Smith“ 10） new Student（“Alice Brown“ 11）
                new Student（“Lana Jones“ 10） new Student（“Jason Smith“ 9） new Student（“Amamda Williams“ 11）
            };

            multiColumnComboBoxEx2.DataSource = studentArray;
            multiColumnComboBoxEx2.DisplayMember = multiColumnComboBoxEx2.ValueMember = “Name“;

            // Drop-down list （non-editable）

            studentList = new List（studentArray）;

            multiColumnComboBoxEx3.DataSource =  studentList;
            multiColumnComboBoxEx3.DisplayMember = “Name“;

            // Trying to use as a regular combobox


            multiColumnComboBoxEx4.Items.Add（“Cat“）;
            multiColumnComboBoxEx4.Items.Add（“Tiger“）;
            multiColumnComboBoxEx4.Items.Add（“Lion“）;
            multiColumnComboBoxEx4.Items.Add（“Cheetah“）;
            multiColumnComboBoxEx4.Items.Add（“abcdefghijklmnopqrstuvwxyz“）;
            multiColumnComboBoxEx4.SelectedIndex = 0;

        }

        public class Student
        {
            private string name;
            private int age;

            public Student（string name

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2009-01-30 09:45  MultiColumnComboBoxEx\
     目录           0  2009-01-30 09:46  MultiColumnComboBoxEx\bin\
     文件       36864  2009-02-18 23:43  MultiColumnComboBoxEx\bin\MultiColumnComboBoxExDemo.exe
     目录           0  2009-01-30 09:46  MultiColumnComboBoxEx\Properties\
     文件        5612  2009-01-29 17:34  MultiColumnComboBoxEx\Properties\Resources.resx
     文件         249  2009-01-29 17:34  MultiColumnComboBoxEx\Properties\Settings.settings
     文件        2844  2009-01-30 09:47  MultiColumnComboBoxEx\Properties\Resources.Designer.cs
     文件        1108  2009-01-30 09:47  MultiColumnComboBoxEx\Properties\Settings.Designer.cs
     文件        1269  2009-01-31 08:49  MultiColumnComboBoxEx\Properties\AssemblyInfo.cs
     文件       31150  2009-02-18 23:44  MultiColumnComboBoxEx\MultiColumnComboBoxEx.cs
     文件         473  2009-01-30 13:58  MultiColumnComboBoxEx\Program.cs
     文件       12155  2009-02-18 23:43  MultiColumnComboBoxEx\Form1.designer.cs
     文件        5486  2009-02-18 23:43  MultiColumnComboBoxEx\Form1.cs
     文件         423  2009-02-07 09:29  MultiColumnComboBoxEx\ClassDiagram1.cd
     文件        5814  2009-02-18 23:43  MultiColumnComboBoxEx\Form1.resx
     文件       21504  2009-02-18 23:44  MultiColumnComboBoxEx\MultiColumnComboBoxExDemo.suo
     文件         938  2009-01-31 08:49  MultiColumnComboBoxEx\MultiColumnComboBoxExDemo.sln
     文件        3467  2009-02-06 16:22  MultiColumnComboBoxEx\MultiColumnComboBoxExDemo.csproj