C#控件列表框

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namespace WindowsFormsApplication2{    partial class Form1    {        /// <summary>        /// 必需的设计器变量。        /// </summary>        private System.ComponentModel.IContainer components = null;        /// <summary>        /// 清理所有正在使用的资源。        /// </summary>        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>        protected override void Dispose(bool disposing)        {            if (disposing && (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.listBox1 = new System.Windows.Forms.ListBox();            this.label1 = new System.Windows.Forms.Label();            this.button1 = new System.Windows.Forms.Button();            this.SuspendLayout();            //             // listBox1            //             this.listBox1.FormattingEnabled = true;            this.listBox1.ItemHeight = 12;            this.listBox1.Location = new System.Drawing.Point(55, 103);            this.listBox1.Name = "listBox1";            this.listBox1.Size = new System.Drawing.Size(140, 112);            this.listBox1.TabIndex = 0;            this.listBox1.SelectedIndexChanged += new System.EventHandler(this.listBox1_SelectedIndexChanged);            //             // label1            //             this.label1.AutoSize = true;            this.label1.Location = new System.Drawing.Point(223, 149);            this.label1.Name = "label1";            this.label1.Size = new System.Drawing.Size(41, 12);            this.label1.TabIndex = 1;            this.label1.Text = "label1";            //             // button1            //             this.button1.Location = new System.Drawing.Point(328, 144);            this.button1.Name = "button1";            this.button1.Size = new System.Drawing.Size(75, 23);            this.button1.TabIndex = 2;            this.button1.Text = "button1";            this.button1.UseVisualStyleBackColor = true;            this.button1.Click += new System.EventHandler(this.button1_Click);            //             // Form1            //             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;            this.ClientSize = new System.Drawing.Size(456, 349);            this.Controls.Add(this.button1);            this.Controls.Add(this.label1);            this.Controls.Add(this.listBox1);            this.Name = "Form1";            this.Text = "Form1";            this.Load += new System.EventHandler(this.Form1_Load);            this.ResumeLayout(false);            this.PerformLayout();        }        #endregion        private System.Windows.Forms.ListBox listBox1;        private System.Windows.Forms.Label label1;        private System.Windows.Forms.Button button1;    }}

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace WindowsFormsApplication2{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            listBox1.Text = "";            label1.Text = "";            button1.Text = "结束";            listBox1.ScrollAlwaysVisible = true;            Random rand = new Random();            for (int i = 0; i < 10; i++){                listBox1.Items.Add(rand.Next(89) + 10);}                   }        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)        {            label1.Text = listBox1.Text;        }        private void button1_Click(object sender, EventArgs e)        {            this.Dispose();        }    }}

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