C#—随机数3

Bertha 。 2022-08-22 05:55 136阅读 0赞

/*
     * 利用窗体实现随机数游戏。
     * 随机给出一个0~99（包括0和99）之间的数字，然后让你猜是什么数字。你可以随便猜一个数字，游戏会 
     * 提示太大还是太小从而缩小范围。经过几次猜错与提示，最终给出答案。 
     */
    using System;
    using System.Collections.Generic;
    using System.Data;
    using System.Text;
    using System.Windows.Forms;
    
    namespace WindowsFormsApplication1
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
    
            private void Form1_Load(object sender, EventArgs e)
            {
                label1.Text = "输入数字：";
                label2.Visible = false;
                label3.Text = "谜底：";
                label4.Visible = false;
                label5.Visible = false;
                button1.Text = "开始游戏";
                button2.Text = "结束游戏";
                button3.Text = "退出";
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
                Random rd = new Random();
                int num = rd.Next(0, 100);
                label4.Text = num.ToString();
                textBox1.Focus();
            }
            private void button2_Click(object sender, EventArgs e)
            {
                label4.Visible = true;
            }
    
            private void textBox1_KeyDown(object sender, KeyEventArgs e)
            {
                if (e.KeyCode==Keys.Enter)
                {
                    label5.Text = textBox1.Text;
                    if (Convert.ToInt32(textBox1.Text) > Convert.ToInt32(label4.Text))
                    {
                       label2.Visible = true;
                       label5.Visible = true;
                       label2.Text = "太大了！";
                    }
                    else if (Convert.ToInt32(textBox1.Text) < Convert.ToInt32(label4.Text))
                    {
                        label5.Visible = true;
                       label2.Visible = true;
                       label2.Text = "太小了！";
                    }
                    else
                    {
                        label5.Visible = true;
                       label2.Visible = true;
                       label2.Text = "恭喜你，猜对了！";
                    }
                    textBox1.Clear();
                }
            }
    
            private void button3_Click(object sender, EventArgs e)
            {
                Application.Exit();
            }
        }
    }

运行结果：  
![Center][]

[Center]: /images/20220722/7ba2047a401b4dfbaa7f0b2dc7a24d37.png