Windowsアプリケーションプログラミング（1）_8

主題の要件：

図のようにフォームをデザインします

フォームにはリストボックス、ラベル、ボタンがあります。Randomクラスを使用して[10,99]の間に10個の乱数を生成し、これらの10個の乱数をリストボックスに表示します。各番号は1つの項目を占めます。ユーザーがアイテムを選択すると、選択したコンテンツが右側のラベルに表示されます。

参照コード：

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 WindowsFormsApplication5_8
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "列表框实验";
            label1.Text = "";
            this.listBox1.Text = "";
            this.listBox1.ScrollAlwaysVisible = true;
            Random r = new Random();
            for (int i = 0; i < 10; i++)
            {
                listBox1.Items.Add(r.Next(10,100));
            }
            this.button1.Text = "结束";
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            label1.Text = listBox1.SelectedItem.ToString();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

自動生成されたDesignerファイル：

namespace WindowsFormsApplication5_8
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </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 = 18;
            this.listBox1.Location = new System.Drawing.Point(47, 107);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(262, 130);
            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(409, 68);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(62, 18);
            this.label1.TabIndex = 1;
            this.label1.Text = "label1";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(374, 174);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(130, 63);
            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(9F, 18F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(589, 343);
            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;
    }
}