(深入.Net平台和C#编程)第八章.上机练习(网络电视精灵).20170415

==============================================XML文件==============================================

-----------------------------------------电视台XML-----------------------------------------

<?xml version="1.0" encoding="utf-8" ?>
<TVChannels>
  <Channel>
    <channelType>TypeA</channelType>
    <tvChannel>北京电视台</tvChannel>
    <path>TypeA.xml</path>
  </Channel>

  <Channel>
    <channelType>TypeB</channelType>
    <tvChannel>广州电视台</tvChannel>
    <path>TypeB.xml</path>
  </Channel>
</TVChannels>

-----------------------------------------北京电视台XML-----------------------------------------

<?xml version="1.0" encoding="utf-8" ?>
<!--频道A-->
<typeA>
  <!--电视台名称-->
  <channelName>北京电视台</channelName>
  <!--电视台节目清单-->
  <tvProgramTable>
    <Program>
      <playTime>2017-04-15 6:02</playTime>
      <!--播出时间-->
      <ProgramName>《还珠格格》</ProgramName>
      <!--节目名称-->
      <ProgramPath>d:/video/《还珠格格》.mp4</ProgramPath>
      <!--节目路径-->
    </Program>

    <Program>
      <playTime>2017-04-16 7:00</playTime>
      <!--播出时间-->
      <ProgramName>《情深深雨蒙蒙》</ProgramName>
      <!--节目名称-->
      <ProgramPath>d:/video/《情深深雨蒙蒙》.mp4</ProgramPath>
      <!--节目路径-->
    </Program>

    <Program>
      <playTime>2017-04-17 8:08</playTime>
      <!--播出时间-->
      <ProgramName>《西游记》</ProgramName>
      <!--节目名称-->
      <ProgramPath>d:/video/《西游记》.mp4</ProgramPath>
      <!--节目路径-->
    </Program>
   </tvProgramTable>
</typeA>

-----------------------------------------广州电视台XML-----------------------------------------

<?xml version="1.0" encoding="utf-8" ?>
<!--频道B-->
<typeB>
  <!--电视台名称-->
  <channelName>广州电视台</channelName>
  <!--电视台节目清单-->
  <tvProgramTable>
      <program>
        <playTime>2017-04-15 8:00</playTime>
        <!--播出时间-->
        <ProgramName>《手撕鬼子》</ProgramName>
        <!--节目名称-->
        <ProgramPath>d:/video/《手撕鬼子》.mp4</ProgramPath>
        <!--节目路径-->
      </program>

      <program>
        <playTime>2017-04-16 9:09</playTime>
        <!--播出时间-->
        <ProgramName>《石头砸飞机》</ProgramName>
        <!--节目名称-->
        <ProgramPath>d:/video/《石头砸飞机》.mp4</ProgramPath>
        <!--节目路径-->
      </program>

      <program>
        <playTime>2017-04-17 10:10</playTime>
        <!--播出时间-->
        <ProgramName>《水浒传》</ProgramName>
        <!--节目名称-->
        <ProgramPath>d:/video/《水浒传》.mp4</ProgramPath>
        <!--节目路径-->
      </program>
    </tvProgramTable>
</typeB>

==============================================entity==============================================

-----------------------------------------电视节目属性类-----------------------------------------

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SJ5.entity
{
    /// <summary>
    /// 电视节目属性类
    /// </summary>
    public class TvProgram
    {
        /// <summary>
        /// 播出时间
        /// </summary>
        public DateTime PlayTime { get; set; }
        /// <summary>
        /// 节目名称
        /// </summary>
        public string ProgramName { get; set; }
        /// <summary>
        /// 节目路径
        /// </summary>
        public string ProgramPath { get; set; }
    }
}

-----------------------------------------父类电视节目类-----------------------------------------

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SJ5.entity
{  
    /// <summary>
    /// 电视节目类
    /// </summary>
    public abstract class ChannelBase
    {
        /// <summary>
        /// 频道名称
        /// </summary>
        public string ChannelName { get; set; }
        /// <summary>
        /// Xml文件路径
        /// </summary>
        public string Path { get; set; }
        /// <summary>
        /// 节目列表
        /// </summary>
        public List<TvProgram> ProgramList { get; set; }

        public ChannelBase()
        {
            this.ProgramList = new List<TvProgram>();
        }
        /// <summary>
        /// 解析频道节目单信息
        /// </summary>
        public abstract void Fetch();
    }
}

-----------------------------------------子类频道A(北京电视台)类-----------------------------------------

using SJ5.entity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;

namespace SJ5.entity
{
    /// <summary>
    /// 频道A
    /// </summary>
    public class TypeAChannel:ChannelBase
    {

        public override void Fetch()
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(base.Path);
            //XmlElement elem = xmlDoc.DocumentElement;
            XmlNode xmlRoot = xmlDoc.DocumentElement;
            ProgramList = new List<TvProgram>();
            foreach (XmlNode node in xmlRoot.ChildNodes)
            {
                if (node.Name == "tvProgramTable")
                {
                    foreach (XmlNode node1 in node.ChildNodes)
                    {
                        //新建节目类型对象
                        TvProgram program = new TvProgram();
                        //根据xml数据赋值对应属性
                        program.PlayTime = DateTime.Parse(node1["playTime"].InnerText);
                        program.ProgramName = node1["ProgramName"].InnerText;
                        program.ProgramPath = node1["ProgramPath"].InnerText;
                        //将节目添加到节目列表
                        ProgramList.Add(program);
                    }
                }
            }
        }
    }
}

-----------------------------------------父类频道B(广州电视台)类-----------------------------------------

using SJ5.entity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;

namespace SJ5.entity
{
    /// <summary>
    /// 频道B
    /// </summary>
    public class TypeBChannel : ChannelBase
    {
        public override void Fetch()
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(base.Path);
            //XmlElement elem = xmlDoc.DocumentElement;
            XmlNode xmlRoot = xmlDoc.DocumentElement;
            ProgramList = new List<TvProgram>();
          
            foreach (XmlNode node in xmlRoot.ChildNodes)
            {
                if (node.Name == "tvProgramTable")
                {
                    foreach (XmlNode node1 in node.ChildNodes)
                    {
                        //新建节目类型对象
                        TvProgram program = new TvProgram();
                        //根据xml数据赋值对应属性
                        program.PlayTime = DateTime.Parse(node1["playTime"].InnerText);
                        program.ProgramName = node1["ProgramName"].InnerText;
                        program.ProgramPath = node1["ProgramPath"].InnerText;
                        //将节目添加到节目列表
                        ProgramList.Add(program);
                    }
                }
            }
        }
    }
   
}

=======================节目管理类=======================

using SJ5.entity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;

namespace SJ5.entity
{
    /// <summary>
    /// 节目管理类
    /// </summary>
    public class ChannelManager
    {
        //XML文件路径
        public string channelPath = "TV.xml";
        //所有频道集合
        public Dictionary<string, ChannelBase> channelBase = new Dictionary<string, ChannelBase>();

        /// <summary>
        /// 根据频道类型创建频道
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public ChannelBase CreateChannel(string type)
        {
            ChannelBase cb = null;
            if (type == "TypeA")
            {
                cb = new TypeAChannel();
            }
            if (type == "TypeB")
            {
                cb = new TypeBChannel();
            }
            return cb;
        }

        /// <summary>
        /// 加载节目
        /// </summary>
        public void LoadChannel()
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(this.channelPath);
            XmlNode xmlRoot = xmlDoc.DocumentElement;
            //将所有频道添加到channelBase泛型集合
            foreach (XmlNode node in xmlRoot.ChildNodes)
            {
                //根据类型创建不同子类
                ChannelBase cb = CreateChannel(node["channelType"].InnerText);
                //根据创建不同子类的对象将不同频道名称赋值给属性
                cb.ChannelName = node["tvChannel"].InnerText;
                //根据创建不同子类的对象把不同频道的xml地址赋值属性
                cb.Path = node["path"].InnerText;
                //根据不同子类对象执行重写方法 给 节目列表赋值
                cb.Fetch();
                //将不同频道 赋值给所有频道泛型集合
                channelBase.Add(cb.ChannelName, cb);
            }
        }

    }
}

==============================================窗体==============================================

using SJ5.entity;
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 SJ5
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
            //初始把ContextMenuStrip两个选项隐藏
            cmsRight.Items[0].Visible = false;
            cmsRight.Items[1].Visible = false;
        }

        ChannelManager cm = new ChannelManager();

        /// <summary>
        /// 加载事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain_Load(object sender, EventArgs e)
        {
            InitList();
            dgvChannelList.AutoGenerateColumns = false;
        }

        /// <summary>
        /// 初始化TreeView 选项
        /// </summary>
        public void InitList()
        {
            tvTV.Nodes.Add("我的电视台");
            tvTV.Nodes.Add("所有电视台");
            //加载节目
            cm.LoadChannel();
            //将所有频道名称加到所有电视台
            foreach (var cb in cm.channelBase)
            {
                tvTV.Nodes[1].Nodes.Add(cb.Key);
            }
            //展开所有节点
            tvTV.ExpandAll();
        }

        //0删除 1添加
        private void tvTV_MouseClick(object sender, MouseEventArgs e)
        {
            //如果选中的是我的电视台的子节点则把 删除 显示 ， 加入 隐藏
            if (tvTV.SelectedNode.Parent != null && tvTV.SelectedNode.Parent.Text.Equals("我的电视台"))
            {
                cmsRight.Items[1].Visible = false;
                cmsRight.Items[0].Visible = true;
            }
            //如果选中的是所有电视台的子节点则把 隐藏 显示 ， 删除 隐藏
            else
            {
                cmsRight.Items[0].Visible = false;
                cmsRight.Items[1].Visible = true;
            }
            //如果选中的是根则把 两个 都隐藏
            if (tvTV.SelectedNode.Level == 0)
            {
                cmsRight.Items[0].Visible = false;
                cmsRight.Items[1].Visible = false;
            }
        }

        /// <summary>
        /// 右键“加入到我的电视台”
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmiAddMyTV_Click(object sender, EventArgs e)
        {
            //循环判断“我的电视台”里有无重复频道
            foreach (TreeNode tr in tvTV.Nodes[0].Nodes)
            {
                if (tr.Text.Equals(tvTV.SelectedNode.Text))
                {
                    MessageBox.Show("已有该频道");
                    return;
                }
            }
            tvTV.Nodes[0].Nodes.Add(tvTV.SelectedNode.Text);
            //展开“我的电视台”的节点
            tvTV.Nodes[0].Expand();
        }

        /// <summary>
        /// 右键删除
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmiDelete_Click(object sender, EventArgs e)
        {
            tvTV.SelectedNode.Remove();
        }

        /// <summary>
        /// 选择节点后事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tvTV_AfterSelect(object sender, TreeViewEventArgs e)
        {
            BangChannel();
        }

        public void BangChannel()
        {
            //如果选中根就不显示节目
            if (tvTV.SelectedNode.Level == 0)
            {
                dgvChannelList.DataSource = null;
                return;
            }
            //用选中的频道找 节目列表
            dgvChannelList.DataSource = cm.channelBase[tvTV.SelectedNode.Text].ProgramList;
        }

    }
}