猜数字游戏

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

namespace 猜数字游戏
{
    public partial class Form1 : Form
    {
        int count = 0;
        public Form1()
        {
            InitializeComponent();
        }

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

        private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode==Keys.Enter)
            {
                button1_Click(sender, e);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (int.Parse(textBox1.Text)>int.Parse(label3.Text))
            {
                label4.Text = "猜大了~~~！";
                label4.Visible = true;
                textBox1.Clear();
            }
            else if (int.Parse(textBox1.Text) < int.Parse(label3.Text))
            {
                label4.Text = "猜小了~~~！";
                label4.Visible = true;
                textBox1.Clear();
            }
            else
            {
                label4.Text = "猜对了~~~！";
                label6.Text = count.ToString();
                label2.Visible = true;
                label3.Visible = true;
                label4.Visible = true;
                label5.Visible = true;
                label6.Visible = true;
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Random ran = new Random();
            label3.Text = ran.Next(0, 99).ToString();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            count++;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            label2.Visible = true;
            label3.Visible = true;
        }
    }
}

运行结果：