【实例类型】

1双色球类

方法的参数是对象。 

public List<string> Numbers { get; set; }        // 这个是对象的属性

  /// <summary>
  /// 双色球类
  /// 
  /// 作用：主要是用来封装数据
  /// </summary>
  public class DoubleChromosphere
  {
      //public string Red1Number { get; set; }
      //public string Red2Number { get; set; }
      //public string Red3Number { get; set; }
      //public string Red4Number { get; set; }
      //public string Red5Number { get; set; }
      //public string Red6Number { get; set; }
      //public string Blue7Number { get; set; }

      请大家自学完课程后，可以尝试分开保存两种球的数字
      //public List<string> RedNumbers { get; set; }
      //public List<string> BlueNumbers { get; set; }

      //今天我们授课：把红色球和蓝色球放到一块
      public List<string> Numbers { get; set; }
  }

2选号器Selector

选号器看成是一个对象【秘书】

让对象去工作。

设计时：注意属性和字段，只在内部使用的变量用字段。 

    /// <summary>
    /// 选号器类
    /// </summary>
    public class Selector
    {
        //红色球池
        public List<string> RedNumberList { get; set; }

        //蓝色球池
        public List<string> BlueNumberList { get; set; }

        //存储选择的号码
        public List<DoubleChromosphere> SelectedNums { get; set; } = new List<DoubleChromosphere>();

        private Random random = new Random();//随机数生成器（只在本类内部使用）

        /// <summary>
        /// 构造方法：初始化球池的数字
        /// </summary>
        public Selector()
        {
            RedNumberList = new List<string>
            {
                "01","02","03","04","05","06","07","08","09","10",
                "11","12","13","14","15","16","17","18","19","20",
                "21","22","23","24","25","26","27","28","29","30",
                "31","32","33"
            };
            BlueNumberList = new List<string>
            {
                "01","02","03","04","05","06","07","08","09","10",
                "11","12","13","14","15","16"
            };
        }
        /// <summary>
        /// 生成7个随机不同的号码
        /// </summary>
        /// <returns></returns>
        public List<string> CreateRandomNum()
        {
            List<string> numList = new List<string>();
            //生成6个红色球
            while (true)
            {
                if (numList.Count == 6) break;//如果随机选取了6个数字了，则退出循环
                string num = RedNumberList[random.Next(33)];
                if (numList.Contains(num)) continue;//如果是重复的数字，则重新随机抽取
                else
                {
                    numList.Add(num);
                }                  
            }
            //生成一个蓝色球
            numList.Add(BlueNumberList[random.Next(16)]);
            return numList;
        }

        //打印、远程保存等（我们在深入的VIP系统学习中再讲解...)
        //这些方法，都会用到我们所保存的《已选择号码》
    }

【ui】

 其他类，是对象，只需要用【new】出，让对象去工作。

ui只需要关心【输入输出】，业务逻辑不必关心。

【字段】是类内全局变量。

1窗体的初始化

namespace xiketang.com.LotteryPro
{
    public partial class FrmMain : Form
    {
        //创建选号器对象
        private Selector newSelector = new Selector();

        //每次得到的随机数
        List<string> randomNum = null;


        public FrmMain()
        {
            InitializeComponent();
            this.btnSelect.Enabled = false;

        }

2对象工作

 //每次得到的随机数
 List<string> randomNum = null; 

        //启动选号
        private void btnStart_Click(object sender, EventArgs e)
        {
            this.timerCreateNum.Start();//启动定时器
            this.btnSelect.Enabled = true;
            this.btnStart.Enabled = false;
        }
        //定时器事件：每隔50ms调用一次
        private void timerCreateNum_Tick(object sender, EventArgs e)
        {
            //通过调用选号器，得到随机数
            randomNum = newSelector.CreateRandomNum();
            //在下面的列表中显示
            this.lblNum1.Text = randomNum[0];
            this.lblNum2.Text = randomNum[1];
            this.lblNum3.Text = randomNum[2];
            this.lblNum4.Text = randomNum[3];
            this.lblNum5.Text = randomNum[4];
            this.lblNum6.Text = randomNum[5];
            this.lblNum7.Text = randomNum[6];
        }
        //选择
        private void btnSelect_Click(object sender, EventArgs e)
        {
            this.timerCreateNum.Stop();
            this.btnSelect.Enabled = false;
            this.btnStart.Enabled = true;

            //创建双色球对象
            DoubleChromosphere dc = new DoubleChromosphere
            {
                //Numbers = new List<string>()
                //{
                //    this.lblNum1.Text,
                //    this.lblNum2.Text,
                //    this.lblNum3.Text,
                //    this.lblNum4.Text,
                //    this.lblNum5.Text,
                //    this.lblNum6.Text,
                //    this.lblNum7.Text
                //}
                //对象初始化器【双色球对象】
                Numbers = this.randomNum  //我们因为已经保存了当前的一组数字，所以可以直接复制
            };

            //添加到选号池，以备后面的打印、远程保存等方法使用
            this.newSelector.SelectedNums.Add(dc);

            //显示号码
            string num = string.Empty;
            foreach (string item in this.randomNum)
            {
                num += item + "  ";
            }
            this.lbNumberList.Items.Add(num);
        }
        //清除
        private void btnDel_Click(object sender, EventArgs e)
        {
            this.newSelector.SelectedNums.Clear(); //从集合中清除
            this.lbNumberList.Items.Clear();//从列表中清除
        }

        //确认购买：需要保存到远程数据库或服务器（也可以通过webapi远程提交）
        private void btnConfirm_Click(object sender, EventArgs e)
        {
            //首先打印

            //远程保存
        }

    

3程序入口

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace xiketang.com.LotteryPro
{
    static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new FrmMain());
        }
    }
}