form1.cs

Visual C#2005程序设计教程

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

namespace WinApp10_1ASCII查询
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_KeyPress(object sender, KeyPressEventArgs e)
        {
            switch (e.KeyChar)
            {
                case (char)Keys.Back:
                    label1.Text = "退格键：" + (int)Keys.Back + "\n" + label1.Text; break;
                case (char)Keys.Tab:
                    label1.Text = "Tab键：" + (int)Keys.Tab + "\n" + label1.Text; break;
                case (char)Keys.Enter:
                    label1.Text = "回车键(Enter)：" + (int)Keys.Enter + "\n" + label1.Text; break;
                case (char)Keys.Space:
                    label1.Text = "空格键：" + (int)Keys.Space + "\n" + label1.Text; break;
                case (char)Keys.Escape:
                    label1.Text = "Esc键：" + (int)Keys.Escape + "\n" + label1.Text; break;
                default:
                    label1.Text = e.KeyChar +"：" + (int)e.KeyChar + "\n" + label1.Text; break;
            }
        }

        private void Form1_Click(object sender, EventArgs e)
        {
            label1.Text = "";   // 清空标签label1的内容
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "ASCII码查询程序";
            label1.Text = "";   // 清空标签label1的内容
            label2.Text = "请按需要查询的键，单击窗体清屏";
        }
    }
}