网络电视精灵

 //频道基类
      public abstract class ChannelBase
    {
          //频道名称
        public string ChannelName { get; set; }
       //频道路径
          public string  Path { get; set; }
          //节目列表，TvProgram节目类频道上的所有节目列表
          public List<TvProgram> TvList { get; set; }
          //获取频道列表：通过Fetch方法获取该频道拥有的所有节目列表
          public abstract void Fetch();

          public ChannelBase() { }
          public ChannelBase(string channelName, string path, List<TvProgram> list)
          {
              this.ChannelName = channelName;
              this.Path = path;
              this.TvList = list;
          }

      }

public  class ChannelFactory
    {
       public static ChannelBase getInstance(string type)
       {
           ChannelBase channel = null;
           switch (type)
           {
               case "TypeA":
                   //创建北京电视台对象
                   channel = new TypeAChannnel();
                   break;
               case "TypeB":
                   //创建凤凰卫视对象
                   channel = new TypeBChannel();
                   break;
               default:
                   break;
           }
           return channel;
       }
    }

 public class ChannelManager
    {
        //定制一个泛型集合 Dictionary<K,V>
        //key:频道的名称    value:频道对象
        private Dictionary<string, ChannelBase> allChannels = new Dictionary<string, ChannelBase>();

        public Dictionary<string, ChannelBase> AllChannels
        {
            get { return allChannels; }
            set { allChannels = value; }
        }
      /// <summary>
      /// 解析所有电视台并填充到双列集合中
      /// </summary>
        public void ResolveAllChannels()
        {
            XmlDocument doc = new XmlDocument();
            doc.Load("files\FullChannels.xml");
            XmlNode root = doc.DocumentElement;
            foreach (XmlNode item in root.ChildNodes)
            {
                string type = item["channelType"].InnerText;
                //一个item就是一个频道
                ChannelBase channel = ChannelFactory.getInstance(type);
                channel.ChannelName = item["tvChannel"].InnerText;
                channel.Path = item["path"].InnerText;
                //解析到双列集合中
                allChannels.Add(channel.ChannelName, channel);
            }

        }
        
    }

//节目类
   public  class TvProgram
    {
       //播出时间
        public DateTime PlayTime { get; set; }
       //早间档 午间档 晚间档
       public string ShiDuan { get; set; }
        //节目名称
       public string  Name { get; set; }
      //视频路径
       public string Path { get; set; }
   }

 //北京电视台
    public class TypeAChannnel : ChannelBase
    {
        public override void Fetch()
        {
            
            //获取频道列表
            XmlDocument doc = new XmlDocument();
            doc.Load(Path);
            XmlNode elem = doc.DocumentElement;
            TvList = new List<TvProgram>();

             foreach (XmlNode node in elem.ChildNodes)
            {
                if (node.Name == "tvProgramTable")
                {
                    foreach (XmlNode child in node.ChildNodes)
                    {
                        TvProgram program = new TvProgram();
                        program.PlayTime = Convert.ToDateTime(child["playTime"].InnerText);
                        program.ShiDuan = child["meridien"].InnerText;
                        program.Name = child["programName"].InnerText;
                        program.Path = child["path"].InnerText;

                        this.TvList.Add(program);
                    }
                }

            }
           
        }
}

 //凤凰卫视
   public  class TypeBChannel:ChannelBase
    {
       public override void Fetch()
       {
           //获取节目列表  
           XmlDocument xmlDoc = new XmlDocument();
           xmlDoc.Load(Path);
           XmlNode elem = xmlDoc.DocumentElement;
           TvList = new List<TvProgram>();
            foreach (XmlNode node in elem.ChildNodes[0])//[0]第一个节点  
           {
               TvProgram programe = new TvProgram();
               programe.PlayTime = DateTime.Parse(node["playTime"].InnerText);
               programe.ShiDuan = "";
               programe.Name = node["name"].InnerText;
               programe.Path = node["path"].InnerText;

               this.TvList.Add(programe);
           }  
       }

    }

 

 TreeNode node = new TreeNode();
        TreeNode allNode = new TreeNode();//另一个根节点
        Dictionary<string, List<TvProgram>> dic = new Dictionary<string, List<TvProgram>>();
        private void frmMain_Load(object sender, EventArgs e)
        {
            dgvList.AutoGenerateColumns = false;
            //1.在treeview上构建两个根节点
            node.Text = "我的电视台";
            //2.将node绑定到treeView1上
            treeView1.Nodes.Add(node);

            allNode.Text = "所有电视台";
            //2.将allNode绑定到treeView1上
            treeView1.Nodes.Add(allNode);

            LoadDataFromXml();
        }
        /// <summary>
        /// 动态绑定treeview节点
        /// </summary>
        private void LoadDataFromXml()
        {
            //ChannelManager有一个集合 调度 ResolveAllChannels方法 集合就有值了
            ChannelManager manager = new ChannelManager();
            manager.ResolveAllChannels();//解析所有电视台相当于给集合赋值
            foreach (ChannelBase channel in manager.AllChannels.Values)
            {
                //一个channel在Tv上就是一个节点
                TreeNode tn = new TreeNode();
                tn.Text = channel.ChannelName;
                tn.Tag = channel;
                allNode.Nodes.Add(tn);
            }

        }

        private void treeView1_AfterSelect_1(object sender, TreeViewEventArgs e)
        {
            TreeNode selectNode = treeView1.SelectedNode;
            //获取到选中节点的level值
            int level = selectNode.Level;
            if (level == 1)
            {
                ChannelBase channel = (ChannelBase)selectNode.Tag;
                channel.Fetch();
                //channel.TvList.Clear();
                dgvList.DataSource = channel.TvList;

            }
        }

        private void 添加ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            TreeNode selectedNode = treeView1.SelectedNode;
            ChannelBase channel = (ChannelBase)selectedNode.Tag;
            channel.Fetch();
            foreach (TreeNode item in selectedNode.Nodes)
            {
                if (item.Text == channel.ChannelName)
                {
                    MessageBox.Show("此电视台已加入，无需重复添加!");
                    return;
                }
            }
            dic.Add(channel.ChannelName, channel.TvList);
            TreeNode NewNode = new TreeNode();
            NewNode.Text = channel.ChannelName;
            NewNode.Tag = channel;
            node.Nodes.Add(NewNode);
        }

        private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            TreeNode selectedNode = treeView1.SelectedNode;
            ChannelBase channel = (ChannelBase)selectedNode.Tag;
            dic.Remove(channel.ChannelName);
            selectedNode.Nodes.Remove(selectedNode);

        }

        private void 播放ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string programName = dgvList.SelectedRows[0].Cells[1].Value.ToString();
            MessageBox.Show("正在播放:" + programName + "");

        }