Windowsアプリケーションプログラミング（1）_4

主題の要件：

図のようにフォームをデザインします。

要件：フォームのタイトルは「マイテキストボックス実験」です。フォームにラベルがあり、内容は図のようになっています。フォームにテキストボックスがあり、テキストボックスには10種類しか入力できません。 0〜9の数字で、最大8文字まで入力できます。「終了」ボタンをクリックして、プログラムを終了します。

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_4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "我的文本框实验";
            this.label1.Text = "下面的文本框只能输入0到9十种数字，且长度最多为8个";
            this.button1.Text = "结束";
            this.textBox1.MaxLength = 8;
        }

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

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar < '0' && e.KeyChar > '9')
            {
                e.Handled = true;
            }
        }
    }
}

自動生成されたDesignerファイル：

namespace WindowsFormsApplication5_4
{
    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.label1 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(63, 40);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(62, 18);
            this.label1.TabIndex = 0;
            this.label1.Text = "label1";
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(66, 110);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(503, 28);
            this.textBox1.TabIndex = 1;
            this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(376, 168);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(111, 40);
            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(641, 244);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Button button1;
    }
}