计算机抽奖系统

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //构建网格布局
            BuildLsyout();
            //向网格布局中加按钮
            AddButtonToTableLayout();
        }
        private void BuildLsyout()
        {
            //清除原先的列
            tableLayoutPanel1.ColumnStyles.Clear();
            //添加新列
            tableLayoutPanel1.ColumnCount = 20;
            for (int i = 0; i < 20; i++)
            {
                ColumnStyle style = new ColumnStyle(SizeType.Percent,5);
                tableLayoutPanel1.ColumnStyles.Add(style);
            }
            //清除原先的行
            tableLayoutPanel1.RowStyles.Clear();
            //添加新行
            tableLayoutPanel1.RowCount = 20;
            for (int i = 0; i < 20; i++)
            {
                ColumnStyle style = new ColumnStyle(SizeType.Percent,5);
                tableLayoutPanel1.RowStyles.Add(style);
            }
        }//构建网格布局
        private void AddButtonToTableLayout() //向网格布局中加按钮
        {
            Random rand = new Random();
            for (int i = 0; i < 400; i++)
            {
                Button bot = new Button();
                bot.Text = i.ToString();
                bot.Dock = DockStyle.Fill;
                tableLayoutPanel1.Controls.Add(bot);
                if (rand.Next(100) % 30 == 0)
                {
                    bot.Tag = 1;
                }
                else if (rand.Next(100) % 50 == 0)
                {
                    bot.Tag = 10;
                }
                else if (rand.Next(100) % 100 == 0)
                {
                    bot.Tag = 100;
                }
                else if (rand.Next(100) % 200 == 0)
                {
                    bot.Tag = 500;
                }
                else if (rand.Next(100) % 500 == 0)
                {
                    bot.Tag = 1000;
                }
                else
                {
                    bot.Tag = 0;
                }
                //初始化按钮的事件
                bot.Click += bot_Click;

            }

        }
        void bot_Click(object sender, EventArgs e)
        {
            Button bot = sender as Button;
            int n =(int)bot.Tag;
            if (n!=0)
            {
                bot.BackColor = Color.Red;
                bot.ForeColor = Color.Blue;
                bot.Text = n.ToString();
                bot.Font = new Font("微软雅黑", 12, FontStyle.Bold);
            }
            bot.Enabled = false;
        }   //按键
    }
}