实例介绍
【实例简介】一个简单易上手的多媒体播放器
【实例截图】
【核心代码】
public partial class frmMain : Form { public string initialFileName = string.Empty;//传入的参数 public int playState = 1;//播放状态 public string defaultExeName = "mp3";//默认文件类型 public frmMain() { InitializeComponent(); } public frmMain(string fileName) { InitializeComponent(); this.initialFileName = fileName; } private void frmMain_Load(object sender, EventArgs e) { InitialPlayList(); GetDefaultExeName(); GetState(); if (this.initialFileName!=string.Empty) { addFileName(this.initialFileName); } } /// <summary> /// 初始化、从文件读取 /// </summary> public void InitialPlayList() { if (!File.Exists("config/PlayList.popMusic")) { return; } this.tvList.Nodes[0].Nodes.Clear(); FileStream fs = new FileStream("config/PlayList.popMusic", FileMode.OpenOrCreate); StreamReader sr = new StreamReader(fs); string fileName = sr.ReadLine(); //从文本中读取 while (fileName != null) { int index = fileName.LastIndexOf(@"\"); string exeName = fileName.Substring(index 1); AddTreeNode(fileName, exeName); fileName = sr.ReadLine(); } sr.Close(); fs.Close(); this.tvList.Nodes[0].ExpandAll(); } /// <summary> /// 保存播放列表 /// </summary> public void SaveList() { FileStream fs = new FileStream("config/PlayList.popMusic", FileMode.Create); StreamWriter sw = new StreamWriter(fs); foreach (TreeNode tn in this.tvList.Nodes[0].Nodes) { sw.WriteLine(tn.Tag.ToString()); } sw.Close(); fs.Close(); } /// <summary> /// 设置默认文件类型 /// </summary> /// <param name="op"></param> public void SaveDefaultExeName() { FileStream fs = new FileStream("config/DefaultExeName.popMusic", FileMode.Create); StreamWriter sw = new StreamWriter(fs); sw.WriteLine(this.defaultExeName.ToLower()); sw.Close(); fs.Close(); } /// <summary> /// 获得默认文件类型 /// </summary> /// <returns></returns> public void GetDefaultExeName() { if (!File.Exists("config/DefaultExeName.popMusic")) { return; } FileStream fs = new FileStream("config/DefaultExeName.popMusic", FileMode.OpenOrCreate); StreamReader sr = new StreamReader(fs); this.defaultExeName = sr.ReadLine().ToLower(); sr.Close(); fs.Close(); if (this.defaultExeName == "mp3") { this.ofd.Filter = "音频文件|*.mp3|视频文件|*.mp4"; this.ofd.DefaultExt = "mp3"; } else { this.ofd.Filter = "视频文件|*.mp4|音频文件|*.mp3"; this.ofd.DefaultExt = "mp4"; } } /// <summary> /// 设置播放状态 /// </summary> /// <param name="op"></param> public void SaveState() { FileStream fs = new FileStream("config/State.popMusic", FileMode.Create); StreamWriter sw = new StreamWriter(fs); sw.WriteLine(this.playState); sw.Close(); fs.Close(); } /// <summary> /// 获得播放状态 /// </summary> /// <returns></returns> public void GetState() { if (!File.Exists("config/State.popMusic")) { return; } FileStream fs = new FileStream("config/State.popMusic", FileMode.OpenOrCreate); StreamReader sr = new StreamReader(fs); this.playState = int.Parse(sr.ReadLine()); sr.Close(); fs.Close(); } /// <summary> /// 打开文件播放 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void 打开文件ToolStripMenuItem_Click(object sender, EventArgs e) { if (this.ofd.ShowDialog() == DialogResult.Cancel) { return; } string fileName = this.ofd.FileName; addFileName(fileName); int index = fileName.LastIndexOf(@"."); string exeName = fileName.Substring(index 1); this.defaultExeName = exeName.ToLower(); } public void addFileName(string fileName) { int index = fileName.LastIndexOf(@"\"); string exeName = fileName.Substring(index 1); //如果播放列表已经有这个文件,就选中列表里的项 foreach (TreeNode t in this.tvList.Nodes[0].Nodes) { string name = t.Text; if (name.Contains(exeName)) { this.tvList.SelectedNode = t; play(); return; } } TreeNode tn = AddTreeNode(fileName, exeName); this.tvList.Nodes[0].ExpandAll(); this.tvList.SelectedNode = tn; play(); } /// <summary> /// 添加一个节点 /// </summary> /// <param name="fileName"></param> /// <param name="exeName"></param> public TreeNode AddTreeNode(string fileName,string exeName) { int count = this.tvList.Nodes[0].Nodes.Count 1; string showCount = count.ToString(); if (count < 10) { showCount = "0" count; } TreeNode tn = new TreeNode(showCount " " exeName); tn.Tag = fileName; tn.ToolTipText = exeName; this.tvList.Nodes[0].Nodes.Add(tn); return tn; } private void cms_Opening(object sender, CancelEventArgs e) { if (this.tvList.Nodes[0].Nodes.Count<1) { this.下载ToolStripMenuItem.Enabled = false; this.删除ToolStripMenuItem.Enabled = false; this.清空播放列表ToolStripMenuItem.Enabled = false; return; } else { this.下载ToolStripMenuItem.Enabled = true; this.删除ToolStripMenuItem.Enabled = true; this.清空播放列表ToolStripMenuItem.Enabled = true; } //再次判断 if (this.tvList.SelectedNode == null || this.tvList.SelectedNode.Level == 0) { this.下载ToolStripMenuItem.Enabled = false; this.删除ToolStripMenuItem.Enabled = false; } else { this.下载ToolStripMenuItem.Enabled = true; this.删除ToolStripMenuItem.Enabled = true; } } private void 下载ToolStripMenuItem_Click(object sender, EventArgs e) { if (this.fbd.ShowDialog() == DialogResult.Cancel) { return; } string fileName = this.tvList.SelectedNode.Tag.ToString(); int index = fileName.LastIndexOf(@"\"); string exeName = fileName.Substring(index 1); string toName = this.fbd.SelectedPath "\\" exeName; File.Copy(fileName, toName); MessageBox.Show("下载" exeName "成功!", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } private void 删除ToolStripMenuItem_Click(object sender, EventArgs e) { TreeNode tn = this.tvList.SelectedNode; this.tvList.Nodes[0].Nodes[tn.Index].Remove(); //说明列表里还有 if (tvList.Nodes[0].Nodes.Count > 0) { SaveList(); InitialPlayList(); //如果当前是最后一项 if (tvList.SelectedNode.Index == tvList.Nodes[0].Nodes.Count - 1) { this.tvList.SelectedNode = tvList.Nodes[0].Nodes[0]; } //不是最后一项 else { this.tvList.SelectedNode = tvList.Nodes[0].Nodes[tvList.SelectedNode.Index 1]; } play(); } else { this.mediaPlay.URL = ""; } }
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