C#项目彩票选号实现思路

//属性-临时号码(用于存储随机号及数组的）
 public List<string[]> selectNum { get; set; }
 private Random randomNum = new Random();
 //构造方法-创建临时号码对象
 public Selector()
 {
    this.selectNum = new List<string[]>();
 }

 //实例方法-随机选7个号
 public string[] selectNumArray()
 {
     string[] ranNum7 = new string[7];
     for (int i = 0; i < 7; i++)
     {
         ranNum7[i] = this.randomNum.Next(10).ToString();
     }
     return ranNum7;
 }

//实例方法-随机选n组号
public void selectNumGroup(int groupNum)
{
    for (int i = 0; i < groupNum; i++)
    {
        selectNum.Add(selectNumArray());
    }
}

  //实例方法-号码列表
  public List<string> listNum()
  {
      List<string> listData = new List<string>();
      string listName;
      for (int i = 0; i < this.selectNum.Count; i++)
      {
          if (i < 9) { listName = "第0" + (i + 1) + "组:  "; }
          else {listName = "第" + (i + 1) + "组:  ";}
          for (int j = 0; j < this.selectNum[i].Length; j++)
          {
              if (j == 5) { listName += selectNum[i][j] + "    "; } else
              {listName += selectNum[i][j] + "  ";}
          }
          listData.Add(listName); //重点
      }
      listData.Reverse();  //重点
      return listData;
  }

//初始化
public FrmMain()
{
    InitializeComponent();
    this.timer_sleep.Stop();
    this.btn_randomGro.Enabled = true;
    this.btn_confirm.Enabled = true;
    this.btn_random.Enabled = true;
    this.btn_clear.Enabled = false;
    this.btn_dele.Enabled = false;
    this.timer1.Start();
}

   //创建类对象
   private Selector objSelector = new Selector();

   //实例方法-列表显示
   public void showList()
   {
       this.list_num.Items.Clear();  //先清空列表，再添加
       this.list_num.Items.AddRange(this.objSelector.listNum().ToArray()); //重点
   }

//关闭
private void btnClose_Click(object sender, EventArgs e)
{
    this.Close();
}
//最小化
private void btnMin_Click(object sender, EventArgs e)
{
    this.WindowState = FormWindowState.Minimized;
}

//随机选号
private void btn_random_Click(object sender, EventArgs e)
{
    this.timer_sleep.Start();
    this.btn_random.Enabled = false;
    this.btn_confirm.Enabled = true;
}

//确认选号
private void btn_confirm_Click(object sender, EventArgs e)
{
    this.timer_sleep.Stop();
    string[] txtNums ={
        lblNum1.Text,
        lblNum2.Text,
        lblNum3.Text,
        lblNum4.Text,
        lblNum5.Text,
        lblNum6.Text,
        lblNum7.Text };  //难点
    this.objSelector.selectNum.Add(txtNums);
    showList();
    this.btn_confirm.Enabled = false;
    this.btn_random.Enabled = true;

  //随机组选
  private void btn_randomGro_Click(object sender, EventArgs e)
  {
      this.objSelector.selectNumGroup(Convert.ToInt16(this.lblNumGro.Text));
      showList();
      this.btn_clear.Enabled = true;
      this.btn_dele.Enabled = true;
  }

//删除
private void brn_dele_Click(object sender, EventArgs e)
{
    this.objSelector.selectNum.RemoveAt(this.list_num.SelectedIndex); //重点
    showList();
}
//清空
private void btn_clear_Click(object sender, EventArgs e)
{ 
    this.list_num.Items.Clear();
    this.objSelector.selectNum.Clear();  //重点
    btn_clear.Enabled = false;
    btn_dele.Enabled = false;
}

#region 【扩展】文件的打开保存、定时器实时刷新
//保存到文件
private void btnSave_Click(object sender, EventArgs e)
{
    FileStream fs = new FileStream("NumList.Txt", FileMode.Create);  //重点
    StreamWriter sw = new StreamWriter(fs);
    for (int i = 0; i < this.list_num.Items.Count; i++)
    {
        sw.WriteLine(this.list_num.Items[i]);
    }
    sw.Close();
    fs.Close();
    MessageBox.Show("保存成功", "提示您", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
//打开文件夹
private void btnsaveOpen_Click(object sender, EventArgs e)
{
    System.Diagnostics.Process.Start("Explorer.exe",
        "J:\\自学视频\\1C#\\喜科堂 郭哥推荐\\练习第二遍\\彩票选号软件\\bin\\Debug\\NumList.Txt");
}
//定时器实时监测数值-初始化开始定时器timer1
private void timer1_Tick(object sender, EventArgs e)
{
    if (this.list_num.Items.Count == 0 || this.list_num.SelectedItem == null)
    {
        this.btn_dele.Enabled = false;
    }
    else
    {
        this.btn_dele.Enabled = true;
    }
}
#endregion