初步构造框架
封装属性及设置文件的路径
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
namespace TVXmlRead
{
public abstract class ChannelBase
{
#region 属性
/// <summary>
/// 频道名称
/// </summary>
private string channelName;
public string ChannelName
{
get { return channelName; }
set { channelName = value; }
}
/// <summary>
/// 频道路径
/// </summary>
private string path;
public string Path
{
get { return path; }
set { path = value; }
}
/// <summary>
/// 节目列表
/// </summary>
private List<TvProgram> programList;
public List< TvProgram> ProgramList
{
get { return programList; }
set { this.programList = value; }
}
#endregion
public abstract void Fetch();
}
}
通过 读取XML文件获取树状节点
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.IO;
using System.Windows.Forms;
namespace TVXmlRead
{
public class ChannelManager
{
/// <summary>
/// 频道文件路径
/// </summary>
private string channelPath ="files/FullChannels.xml";
/// <summary>
/// 全部频道
/// </summary>
private Dictionary<string, ChannelBase> fullChannel=new Dictionary<string,ChannelBase>();
public Dictionary<string, ChannelBase> FullChannel
{
get
{
return fullChannel;
}
}
//持久化信息
private SavingInfo seria = new SavingInfo();
public SavingInfo Seria
{
get { return seria; }
}
/// <summary>
/// 启动程序时，读取FullChannels.xml，加载所有频道列表
/// </summary>
public void LoadChannel()
{
//预处理集合，防止被重复加载数据
try
{
fullChannel.Clear();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(channelPath);
XmlElement xmlRoot = xmlDoc.DocumentElement;
foreach (XmlNode node in xmlRoot.ChildNodes)
{
//根据频道类型创建对象
ChannelBase channel =CreateChannel(node["channelType"].InnerText);
channel.ChannelName = node["tvChannel"].InnerText;
channel.Path = node["path"].InnerText;
this.fullChannel.Add(channel.ChannelName, channel);
}
}
catch
{
throw new Exception("数据加载错误!");
}
}
public ChannelBase CreateChannel(string type)
{
ChannelBase channel = null;
switch (type)
{
case "TypeA":
channel = new TypeAChannel();
break;
case "TypeB":
channel = new TypeBChannel();
break;
default:
break;
}
return channel;
}
//保存定制频道信息的文本文件名称
private string saveFileName = @"files\save";
/// <summary>
/// 将我的电台信息存储到文本文件之中
/// 要解决中文乱码问题
/// </summary>
public void SaveAsTxt()
{
try
{
FileStream fs = new FileStream(saveFileName + ".txt", FileMode.Create);
StreamWriter writer = new StreamWriter(fs, Encoding.GetEncoding("GB2312"));
string type = "";
for (int index = 0; index < this.seria.MyFavor.Count; index++)
{
ChannelBase channel = this.seria.MyFavor[index];
if (channel is TypeBChannel)
{
type = "TypeB";
}
else
{
type = "TypeA";
}
writer.WriteLine(type
+ "|" + channel.ChannelName
+ "|" + channel.Path);
}
writer.WriteLine("End of my Favor");
writer.Close();
fs.Close();
}
catch (Exception ex)
{
MessageBox.Show("写入文件失败:" + ex.ToString());
}
}
/// <summary>
/// 从文本文件之中读取"我的电台"信息
/// </summary>
public void LoadFromText()
{
//#region 存在性判断
if (!File.Exists(@"files\save.txt"))
{//不存在则不再处理
return;
}
//#endregion
try
{
StreamReader reader = new StreamReader(saveFileName + ".txt", Encoding.GetEncoding("GB2312"));
string line = reader.ReadLine();
string[] propertyValues;
ChannelBase channel = null;
while (line.Trim() != "End of my Favor")
{
propertyValues = line.Split('|');
channel = CreateChannel(propertyValues[0]);
channel.ChannelName = propertyValues[1];
channel.Path = propertyValues[2];
this.seria.MyFavor.Add(channel);
line = reader.ReadLine();
}
reader.Close();
}
catch (Exception ex)
{
MessageBox.Show("文件操作异常:" + ex.Message);
}
}
}
}
通过点击树状节点显示对应电视台的节目信息
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.IO;
using System.Windows.Forms;
namespace TVXmlRead
{
public class ChannelManager
{
/// <summary>
/// 频道文件路径
/// </summary>
private string channelPath ="files/FullChannels.xml";
/// <summary>
/// 全部频道
/// </summary>
private Dictionary<string, ChannelBase> fullChannel=new Dictionary<string,ChannelBase>();
public Dictionary<string, ChannelBase> FullChannel
{
get
{
return fullChannel;
}
}
//持久化信息
private SavingInfo seria = new SavingInfo();
public SavingInfo Seria
{
get { return seria; }
}
/// <summary>
/// 启动程序时，读取FullChannels.xml，加载所有频道列表
/// </summary>
public void LoadChannel()
{
//预处理集合，防止被重复加载数据
try
{
fullChannel.Clear();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(channelPath);
XmlElement xmlRoot = xmlDoc.DocumentElement;
foreach (XmlNode node in xmlRoot.ChildNodes)
{
//根据频道类型创建对象
ChannelBase channel =CreateChannel(node["channelType"].InnerText);
channel.ChannelName = node["tvChannel"].InnerText;
channel.Path = node["path"].InnerText;
this.fullChannel.Add(channel.ChannelName, channel);
}
}
catch
{
throw new Exception("数据加载错误!");
}
}
public ChannelBase CreateChannel(string type)
{
ChannelBase channel = null;
switch (type)
{
case "TypeA":
channel = new TypeAChannel();
break;
case "TypeB":
channel = new TypeBChannel();
break;
default:
break;
}
return channel;
}
//保存定制频道信息的文本文件名称
private string saveFileName = @"files\save";
/// <summary>
/// 将我的电台信息存储到文本文件之中
/// 要解决中文乱码问题
/// </summary>
public void SaveAsTxt()
{
try
{
FileStream fs = new FileStream(saveFileName + ".txt", FileMode.Create);
StreamWriter writer = new StreamWriter(fs, Encoding.GetEncoding("GB2312"));
string type = "";
for (int index = 0; index < this.seria.MyFavor.Count; index++)
{
ChannelBase channel = this.seria.MyFavor[index];
if (channel is TypeBChannel)
{
type = "TypeB";
}
else
{
type = "TypeA";
}
writer.WriteLine(type
+ "|" + channel.ChannelName
+ "|" + channel.Path);
}
writer.WriteLine("End of my Favor");
writer.Close();
fs.Close();
}
catch (Exception ex)
{
MessageBox.Show("写入文件失败:" + ex.ToString());
}
}
/// <summary>
/// 从文本文件之中读取"我的电台"信息
/// </summary>
public void LoadFromText()
{
//#region 存在性判断
if (!File.Exists(@"files\save.txt"))
{//不存在则不再处理
return;
}
//#endregion
try
{
StreamReader reader = new StreamReader(saveFileName + ".txt", Encoding.GetEncoding("GB2312"));
string line = reader.ReadLine();
string[] propertyValues;
ChannelBase channel = null;
while (line.Trim() != "End of my Favor")
{
propertyValues = line.Split('|');
channel = CreateChannel(propertyValues[0]);
channel.ChannelName = propertyValues[1];
channel.Path = propertyValues[2];
this.seria.MyFavor.Add(channel);
line = reader.ReadLine();
}
reader.Close();
}
catch (Exception ex)
{
MessageBox.Show("文件操作异常:" + ex.Message);
}
}
}
}
将选中电视台 添加到自定义的位置
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TVXmlRead
{
//持久化信息类
public class SavingInfo
{
public SavingInfo()
{
this.myFavor = new List<ChannelBase>();
}
#region 属性
/// <summary>
/// 我的收藏
/// </summary>
private List<ChannelBase> myFavor;
public List<ChannelBase> MyFavor
{
get
{
if (myFavor == null)
{
return new List<ChannelBase>();
}
else
{
return myFavor;
}
}
set { myFavor = value; }
}
#endregion
}
}
设置节目的具体属性
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
namespace TVXmlRead
{
public abstract class ChannelBase
{
#region 属性
/// <summary>
/// 频道名称
/// </summary>
private string channelName;
public string ChannelName
{
get { return channelName; }
set { channelName = value; }
}
/// <summary>
/// 频道路径
/// </summary>
private string path;
public string Path
{
get { return path; }
set { path = value; }
}
/// <summary>
/// 节目列表
/// </summary>
private List<TvProgram> programList;
public List< TvProgram> ProgramList
{
get { return programList; }
set { this.programList = value; }
}
#endregion
public abstract void Fetch();
}
}
窗体中的代码
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 TVXmlRead
{
public partial class MainForm : Form
{
/// <summary>
/// 管理器类
/// </summary>
private ChannelManager myManager = new ChannelManager();
public MainForm()
{
InitializeComponent();
}
/// <summary>
/// 电视台初始化
/// </summary>
private void InitChannel()
{
//加载所有频道信息
myManager.LoadChannel();
//加载用户定制的频道信息
myManager.LoadFromText();
//刷新TreeView显示
UpdateTreeView();
}
/// <summary>
/// 窗体加载事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MainForm_Load(object sender, EventArgs e)
{
this.SetVisible(true);
this.InitChannel();
}
/// <summary>
/// 控制DataGridView和listView的显示
/// </summary>
/// <param name="boolInfo"></param>
private void SetVisible(bool boolInfo)
{
this.dgvProgList.Visible = boolInfo;
}
/// <summary>
/// 刷新频道列表
/// </summary>
private void UpdateTreeView()
{
//清空所有节点
this.tvChannel.Nodes.Clear();
//初始化根结点
TreeNode nodeFirstLevel = new TreeNode("我的电视台");
nodeFirstLevel.ImageIndex = 0;
this.tvChannel.Nodes.Add(nodeFirstLevel);
nodeFirstLevel = new TreeNode("所有电视台");
this.tvChannel.Nodes.Add(nodeFirstLevel);
//加载“所有电视台”
foreach (ChannelBase dicOne in myManager.FullChannel.Values)
{
TreeNode node = new TreeNode();
node.Text = dicOne.ChannelName;
node.Tag = dicOne;
node.ImageIndex = 1;
this.tvChannel.Nodes[1].Nodes.Add(node);
}
//加载“我的电视台”
foreach (ChannelBase dicOne in myManager.Seria.MyFavor)
{
TreeNode node = new TreeNode();
node.Text = dicOne.ChannelName;
node.Tag = dicOne;
node.ImageIndex = 1;
this.tvChannel.Nodes[0].Nodes.Add(node);
}
//展开所有节点
tvChannel.ExpandAll();
}
/// <summary>
/// 将一个电台添加到我的电台中
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsmAddToFavor_Click(object sender, EventArgs e)
{
TreeNode node = this.tvChannel.SelectedNode;
//没有选中任何节点，返回
if (node == null)
{
return;
}
ChannelBase ch = (ChannelBase)node.Tag;
//保证不重复
foreach (TreeNode nodeItem in this.tvChannel.Nodes[0].Nodes)
{
if (nodeItem.Text.Trim() == node.Text.Trim())
{
return;//发现“我的收藏夹”中有这个电台，就退出，不再执行添加工作。
}
}
this.myManager.Seria.MyFavor.Add(ch);
this.UpdateTreeView();
}
/// <summary>
/// 右键单击树型菜单，控制右键菜单的菜单项的显示：
/// 即“所有电视台”的子节点的右键中只显示“加入到我的电台”
/// 而“我的电视台”的子节点的右键只能显示"删除"
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tvChannel_MouseClick(object sender, MouseEventArgs e)
{
//只处理右键事件
TreeNode node = this.tvChannel.SelectedNode;
if (node != null && node.Level != 0)//有节点被选中且不是顶级节点
{
//这句代码保证右键点击树的时候，那个节点处于选中状态
if (node.Parent.Text == "所有电视台")
{
//使"加入到我的电台"这个菜单项可见
cmenuRight.Items[1].Visible = false;
cmenuRight.Items[0].Visible = true;
}
else
{
//使“删除”菜单项可见
cmenuRight.Items[0].Visible = false;
cmenuRight.Items[1].Visible = true;
}
}
else
{
cmenuRight.Items[1].Visible = false;
cmenuRight.Items[0].Visible = false;
}
}
private void TMenuItemDel_Click(object sender, EventArgs e)
{
TreeNode node = this.tvChannel.SelectedNode;
//没有选中任何节点，返回
if (node == null)
{
return;
}
ChannelBase ch = (ChannelBase)node.Tag;
this.myManager.Seria.MyFavor.Remove(ch);
this.UpdateTreeView();
}
/// <summary>
/// 树形菜单选项改变事件:改变频道，加载选中频道的节目信息
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tvChannel_AfterSelect(object sender, TreeViewEventArgs e)
{
//控制DataGridView的显示
this.SetVisible(true);
//e.Node选中的节点
if (e.Node.Level != 0)
{
ChannelBase ch = (ChannelBase)e.Node.Tag;
if (ch.ProgramList != null)
{
ch.ProgramList.Clear();//清除当前节目单
}
ch.Fetch(); //读取节目单
this.dgvProgList.DataSource = ch.ProgramList; //绑定到数据展示控件显示
this.dgvProgList.Tag = ch.ChannelName; //将当前Dgv的Tag属性设为频道的名称
}
}
//退出应用程序
private void MainForm_FormClosed(object sender, FormClosedEventArgs e)
{
//退出之前存储信息
myManager.SaveAsTxt();
Application.Exit();
}
}
}
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