话不多少,今天要写一个小项目。我们写项目要做好准备。我们要做项目分析。要知道用户需求,然后在根据需求来规划自己的项目。我们要用自己所学,做最好的程序。尽自己所能完成项目需求。精简代码!
我们今天要写的项目叫网络电视精灵。首先我们要做到的是要把我们事先写好的XML文件解析好放到TreeView空间上显示。,并选择一个Treeview的节点显示其对应的信息到DateGridView上!
有几个细节要求写到再说!下面有彩蛋!!!
做好的窗体是这个样子的!
启动是这个样子的
所有的类是这个样子的
每个类的代码和注释
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Chap_网络电视精灵 { /// <summary> /// 电视频道父类,抽象类 /// </summary> public abstract class ChannelBase { //这是一堆自动属性,很简单就是要来接收Xml文件的信息的! public string ChannelName { get; set; } public string Path { get; set; } public string ChannelType { get; set; } public List<TvProgram> list { get; set; } public abstract void Fetch(); //数据类型为List<TvProgram>的单列泛型集合 private List<TvProgram> ProgramList = new List<TvProgram>(); public List<TvProgram> ProgramList1 { get { return ProgramList; } set { ProgramList = value; } } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Chap_网络电视精灵 { public class ChannelFactory { /// <summary> /// 工厂类 /// </summary> /// <param name="type"></param> /// <returns></returns> public static 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; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml; namespace Chap_网络电视精灵 { /// <summary> /// 节目管理类 /// </summary> class ChannelManager { //单列泛型集合 private List<ChannelBase> list = new List<ChannelBase>(); public List<ChannelBase> List { get { return list; } set { list = value; } } //解析XML文件的方法 public void ResolveChannels() { //1.1 我将解析好的Data中转存放到泛型集合 //List<自定义类> XmlDocument doc = new XmlDocument(); doc.Load("FullChannels.xml"); //找根节点 XmlNode root = doc.DocumentElement; foreach (XmlNode item in root.ChildNodes) { //一个item代表什么 Channel ChannelBase channel = Factory.CreateFactory(item["channelType"].InnerText); channel.ChannelType = item["channelType"].InnerText; channel.ChannelName = item["tvChannel"].InnerText; channel.Path = item["path"].InnerText; //归属到一个集合中 list.Add(channel); } } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Chap_网络电视精灵 { /// <summary> /// 简单工厂类 /// </summary> class Factory { //一个静态的返回值为ChannelBase类型的方法 public static ChannelBase CreateFactory(string type) { ChannelBase types = null; switch (type) { case "TypeA": types = new TypeAChannel(); break; case "TypeB": types = new TypeBChannel(); break; } return types; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Chap_网络电视精灵 { /// <summary> /// 电视频道类 /// </summary> public class TvProgram { //节目名称 public string ProgramName { get; set; } //时段 public string Meridien { get; set; } //节目路径 public string Path { get; set; } //时间 public DateTime PlayTime { get; set; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml; namespace Chap_网络电视精灵 { /// <summary> /// A类频道类 /// </summary> class TypeAChannel : ChannelBase { //重写父类的抽象方法,解析XML文件并绑定到泛型集合上 public override void Fetch() { XmlDocument doc = new XmlDocument(); doc.Load("北京电视台.xml"); XmlNode root = doc.DocumentElement; //找根节点 foreach (XmlNode item in root.ChildNodes)//遍历子节点 { if(item.Name.Equals("tvProgramTable"))//判断条件是节点的Name是否是"tvProgramTable" { foreach (XmlNode items in item.ChildNodes)//遍历子节点的子节点 { TvProgram Tp = new TvProgram(); Tp.PlayTime = Convert.ToDateTime(items["playTime"].InnerText); Tp.Meridien = items["meridien"].InnerText; Tp.Path = items["path"].InnerText; Tp.ProgramName = items["programName"].InnerText; ProgramList1.Add(Tp);//绑定到集合 } } } } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml; namespace Chap_网络电视精灵 { class TypeBChannel : ChannelBase { //解析XML文件的方法 public override void Fetch() { //1.1 我将解析好的Data中转存放到泛型集合 //List<自定义类> XmlDocument doc = new XmlDocument(); doc.Load("凤凰卫视.xml"); //找根节点 XmlNode root = doc.DocumentElement; foreach (XmlNode item in root.ChildNodes)//遍历子节点 { if (item.Name.Equals("ProgramList"))//判断条件是节点的Name是否是"tvProgramTable" { foreach (XmlNode items in item.ChildNodes)//遍历子节点的子节点 { TvProgram Tp = new TvProgram(); Tp.PlayTime = Convert.ToDateTime(items["playTime"].InnerText); Tp.Path = items["path"].InnerText; Tp.ProgramName = items["name"].InnerText; ProgramList1.Add(Tp);//绑定到集合 } } } } } }
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; using System.Xml; namespace Chap_网络电视精灵 { public partial class FrmMain : Form { public FrmMain() { InitializeComponent(); } bool flag = false; private void FrmMain_Load(object sender, EventArgs e) { Insert(); flag = true; }
//绑定TreeView的数据 public void Insert() { TreeNode minenode = new TreeNode(); minenode.Text = "我的电视台"; //bind tvList.Nodes.Add(minenode); //根节点 TreeNode root = new TreeNode(); root.Text = "所有电视台"; //bind tvList.Nodes.Add(root); ChannelManager manager = new ChannelManager(); manager.ResolveChannels(); List<ChannelBase> list = manager.List; foreach (ChannelBase item in list) { TreeNode tn = new TreeNode(); tn.Text = item.ChannelName; tn.Tag = item; root.Nodes.Add(tn); } } private void tvList_AfterSelect(object sender, TreeViewEventArgs e) { if(flag) {
//让右键选择菜单分开显示 if (tvList.SelectedNode.Level == 0) { ctms.Items[0].Visible = false; ctms.Items[1].Visible = false; } else if (tvList.SelectedNode.Parent.Text == "我的电视台") { ctms.Items[0].Visible = true; ctms.Items[1].Visible = false; } else if (tvList.SelectedNode.Parent.Text == "所有电视台") { ctms.Items[0].Visible = false; ctms.Items[1].Visible = true; } TreeNode selectNode = tvList.SelectedNode; if (selectNode.Tag == null) { return; } ChannelBase channel = (ChannelBase)selectNode.Tag; //给LIst集合填充数据 channel.Fetch(); List<TvProgram> list = channel.ProgramList1; clear(list); } } public void clear(List<TvProgram> list) { dgvList.AutoGenerateColumns = false; dgvList.DataSource = new BindingList<TvProgram>(list); } private void dgvList_CellContentClick(object sender, DataGridViewCellEventArgs e) { } private void 加入我的电视台ToolStripMenuItem_Click(object sender, EventArgs e) {
//右键加入我的电视台 ChannelBase channel = (ChannelBase)tvList.SelectedNode.Tag; TreeNode node = new TreeNode(); node.Text = channel.ChannelName; node.Tag = channel; tvList.Nodes[0].Nodes.Add(node); } private void 删除ToolStripMenuItem_Click(object sender, EventArgs e) { //删除所选中的节点 XmlDocument doc = new XmlDocument(); doc.Load("FullChannels.xml"); //找根节点 () XmlNode root = doc.DocumentElement; foreach (XmlNode item in root.ChildNodes) { if (item["tvChannel"].InnerText == tvList.SelectedNode.Text) { tvList.SelectedNode.Remove(); break; } } } } }
我是彩蛋!!!
所有代码都在上面了,最后总结一下思路!我们首先把电视频道的XML文件解析到单列泛型集合里,然后把集合的数据绑定到TreeView控件上并绑定Tag值为ChannelBase对象;然后通过选中的节点的Tag值拿到电视节目解析完的泛型集合来绑定DateGridView!