private void rdoGiveTicket_CheckedChanged(object sender, EventArgs e)
 {
 if (this.treeView1.SelectedNode == null) return;
 this.lblOriginalPrice.Text = "0";
 this.cboDiscount.Enabled = false;
 this.txtGiver.Enabled = true;
 }

private void rdoStuTicket_CheckedChanged(object sender, EventArgs e)
 {
 if (this.treeView1.SelectedNode == null) return;
 this.cboDiscount.Enabled = true;
 this.txtGiver.Enabled = false;
 }

 private void rdoNormal_CheckedChanged(object sender, EventArgs e)
 {
 this.cboDiscount.Enabled = false;
 this.txtGiver.Enabled = false;
 if (!GetKey()) return;
 //更新原价，因为点击赠票时价格为0了
 this.lblOriginalPrice.Text = cinema.Schedule.Items[key].Movie.Price.ToString();
 }

private void ClearContent()
 {
 //点击时间（场次）时切换回普通票 并清空可能残留的信息
 txtGiver.Text = "";
 cboDiscount.Text = "";
 }

 public bool GetKey()
 {
 //选中节点
 TreeNode node = this.treeView1.SelectedNode;
 //如果没有选择节点=》结束
 if (node == null) return false;
 //如果选中节点不是场次（时间）=》结束
 if (node.Level != 1) return false;
 //获取时间作为key
 key = node.Text;
 if (key != "" && key != null) return true;
 return false;
 }

 private void InitTreeView()
 {
 this.treeView1.Nodes.Clear();
 string movieName = "";
 TreeNode tn = null;
 foreach (ScheduleItem item in cinema.Schedule.Items.Values)
 {
  //如果不存在此电影节点，创建电影节点
  if (item.Movie.MovieName != movieName)
  {
  tn = new TreeNode(item.Movie.MovieName);
  tn.Tag = item.Movie;
  this.treeView1.Nodes.Add(tn);
  }
  //增加场次时间节点
  TreeNode time = new TreeNode(item.Time);
  tn.Nodes.Add(time);
  //获取当前场次的电影名字，重新遍历
  movieName = item.Movie.MovieName;
 }
 //展开所有的节点
 this.treeView1.ExpandAll();
 }

 private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
 {
 //清空残留信息
 ClearContent();
 rdoNormal.Checked = true;
 //获取key
 if (!GetKey()) return;
 lblName.Text = cinema.Schedule.Items[key].Movie.MovieName;
 lblDate.Text = key;
 lblType.Text = cinema.Schedule.Items[key].Movie.MovieType.ToString();
 lblOriginalPrice.Text = cinema.Schedule.Items[key].Movie.Price.ToString();
 lblMainAct.Text = cinema.Schedule.Items[key].Movie.Actor;
 lblDirect.Text = cinema.Schedule.Items[key].Movie.Director;
 this.pictureBox1.Image = Image.FromFile(cinema.Schedule.Items[key].Movie.Poster);
 this.lblPreferentialPrice.Text = "";
 }

private void InitialSeat()
 {
 int seatRow = 7;
 int seatLine = 5;
 for (int i = 0; i < seatRow; i++)//列
 {
  for (int j = 0; j < seatLine; j++)//行
  {
  label = new Label();
  //设置背景颜色
  label.BackColor = Color.Yellow;
  //设置字体 字体，大小，指定应用到文本的字形信息为普通文本，指定给定数据的度量单位，新字体的GDI字符集
  label.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
  //取消自动尺寸方便我们设置尺寸
  label.AutoSize = false;
  //指定label的宽和高
  label.Size = new System.Drawing.Size(50, 25);
  //设置座位号
  label.Text = (j + 1).ToString() + "-" + (i + 1).ToString();
  label.TextAlign = ContentAlignment.MiddleCenter;
  //设置位置
  label.Location = new Point(60 + (i * 100), 60 + (j * 60));
  //所有的标签绑定到同一事件，lblSeat_Click是我们手动写的事件
  label.Click += new System.EventHandler(lblSeat_Click);
  //tb是TabPage
  tb.Controls.Add(label);
  //加入到全局的labels集合中
  labels.Add(label.Text, label);
  //实例化一个座位Seat构造函数的参数为座位号及颜色
  seat = new Seat((j + 1).ToString() + "-" + (i + 1).ToString(), Color.Yellow);
  cinema.Seats.Add(seat.SeatNum, seat);
  }
 }