using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace listbox
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// 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()
{
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.listBox1 = new System.Windows.Forms.ListBox();
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 40);
this.label1.Name = "label1";
this.label1.TabIndex = 0;
this.label1.Text = "同学录";
//
// label2
//
this.label2.Location = new System.Drawing.Point(160, 40);
this.label2.Name = "label2";
this.label2.TabIndex = 1;
this.label2.Text = "新同学";
//
// listBox1
//
this.listBox1.ItemHeight = 12;
this.listBox1.Items.AddRange(new object[] {
"张三",
"李四",
"王五"});
this.listBox1.Location = new System.Drawing.Point(16, 72);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(120, 88);
this.listBox1.TabIndex = 2;
this.listBox1.SelectedIndexChanged += new System.EventHandler(this.listBox1_SelectedIndexChanged);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(152, 72);
this.textBox1.Name = "textBox1";
this.textBox1.TabIndex = 3;
this.textBox1.Text = "";
//
// button1
//
this.button1.Location = new System.Drawing.Point(160, 104);
this.button1.Name = "button1";
this.button1.TabIndex = 4;
this.button1.Text = "添加";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(160, 136);
this.button2.Name = "button2";
this.button2.TabIndex = 5;
this.button2.Text = "删除";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.listBox1);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{
if (textBox1.Text!="")
listBox1.Items.Add(textBox1.Text);
}
private void button2_Click(object sender, System.EventArgs e)
{
listBox1.Items.Remove(listBox1.SelectedItem.ToString());
textBox1.Text="";
}
private void listBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
textBox1.Text=listBox1.SelectedItem.ToString(); //在删除的时候这里会出现异常
}
private void Form1_Load(object sender, System.EventArgs e)
{
}
}
}
