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

namespace?UseComboBox
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（?）
????????{
????????????InitializeComponent（?）;
????????}

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????//初始化可選項為“00”到“10”，
????????????for?（int?i?=?0;?i?????????????{
????????????????this.cmbItems.Items.Add（i.ToString（“D2“））;
????????????}
????????????//綁定SelectedIndexChanged事件
????????????this.cmbItems.SelectedIndexChanged?+=?new?EventHandler（cmbItems_SelectedIndexChanged）;
????????????//默認選中第1項（索引為0）
????????????this.cmbItems.SelectedIndex?=?0;
????????}

????????void?cmbItems_SelectedIndexChanged（object?sender?EventArgs?e）
????????{
????????????//生成提示文本，并顯示到lbHint
????????????string?str?=?“當前選中：Index=“?+?this.cmbItems.SelectedIndex.ToString（?）?
????????????????????????????+?“?value=‘“?+?（string）this.cmbItems.SelectedItem?+?“‘“;
????????????this.lbHint.Text?=?str;
????????}

????????private?void?btnAdd_Click（object?sender?EventArgs?e）
????????{
????????????//去除輸入框中的前后空白，然后添加到cmbItems
????????????string?str?=?this.tbNewItem.Text.Trim（?）;
????????????if?（!string.IsNullOrEmpty（str））
????????????????this.cmbItems.Items.Add（str）;
????????}

????????private?void?btnDelete_Click（object?sender?EventArgs?e）
????????{
????????????//如果有選中刪除，否則提示
????????????if?（this.cmbItems.SelectedIndex?>=?0）
????????????????this.cmbItems.Items.RemoveAt（this.cmbItems.SelectedIndex）;
????????????else
????????????????MessageBox.Show（“沒有任何選中項，請先選中!“）;
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????10240??2009-01-16?13:51??UseComboBox\UseComboBox\bin\Debug\UseComboBox.exe

?????文件??????22016??2009-01-16?13:51??UseComboBox\UseComboBox\bin\Debug\UseComboBox.pdb

?????文件??????14328??2009-01-16?13:51??UseComboBox\UseComboBox\bin\Debug\UseComboBox.vshost.exe

?????文件????????490??2007-07-21?01:33??UseComboBox\UseComboBox\bin\Debug\UseComboBox.vshost.exe.manifest

?????文件???????1901??2007-09-11?19:44??UseComboBox\UseComboBox\Form1.cs

?????文件???????5018??2007-09-11?19:41??UseComboBox\UseComboBox\Form1.Designer.cs

?????文件???????5814??2007-09-11?19:39??UseComboBox\UseComboBox\Form1.resx

?????文件????????896??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\UseComboBox.csproj.FileListAbsolute.txt

?????文件????????847??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\UseComboBox.csproj.GenerateResource.Cache

?????文件??????10240??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\UseComboBox.exe

?????文件????????180??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\UseComboBox.Form1.resources

?????文件??????22016??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\UseComboBox.pdb

?????文件????????180??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\UseComboBox.Properties.Resources.resources

?????文件????????473??2007-09-11?18:32??UseComboBox\UseComboBox\Program.cs

?????文件???????1194??2007-09-11?18:32??UseComboBox\UseComboBox\Properties\AssemblyInfo.cs

?????文件???????2846??2008-03-08?11:56??UseComboBox\UseComboBox\Properties\Resources.Designer.cs

?????文件???????5612??2007-09-11?18:32??UseComboBox\UseComboBox\Properties\Resources.resx

?????文件???????1109??2008-03-08?11:56??UseComboBox\UseComboBox\Properties\Settings.Designer.cs

?????文件????????249??2007-09-11?18:32??UseComboBox\UseComboBox\Properties\Settings.settings

?????文件???????3437??2008-03-08?11:56??UseComboBox\UseComboBox\UseComboBox.csproj

?????文件????????923??2008-03-08?11:56??UseComboBox\UseComboBox.sln

????..A..H.?????17920??2009-01-16?13:52??UseComboBox\UseComboBox.suo

?????目錄??????????0??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug\TempPE

?????目錄??????????0??2009-01-16?13:51??UseComboBox\UseComboBox\bin\Debug

?????目錄??????????0??2009-01-16?13:51??UseComboBox\UseComboBox\obj\Debug

?????目錄??????????0??2009-01-16?13:51??UseComboBox\UseComboBox\bin

?????目錄??????????0??2009-01-16?13:51??UseComboBox\UseComboBox\obj

?????目錄??????????0??2009-01-12?14:11??UseComboBox\UseComboBox\Properties

?????目錄??????????0??2009-01-16?13:51??UseComboBox\UseComboBox

?????目錄??????????0??2009-01-12?14:11??UseComboBox

............此處省略3個文件信息