wp7之《够酷悦音播放器》 使用线程池实现多线程下载

wp7上实现多线程下载，和在其他地方有点区别，wp7现阶段一些c#中的code不能直接使用，贴出自己写的demo，（并没写断点续传 如果想做，就必须给 request的 Headers 添加属性添加一个头 “Content=bytes” 下载是 使用stream.Seek() 设置“流头” 从当前位置开始下载）

using System;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Ink;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using System.Collections.Generic;

namespace Mp3StoreandPlayback

{

public class DownloadThread

{

public double PerSecondStreamLegth{get;set;}

public double TotalLeght { get; set; }

public double currentLeght{get;set;}

public string Loadspead { get; set; }

public double myvalue { get; set; }

public Dictionary<int, DownloadThread> mydownThread;

public DownloadThread()

{

mydownThread = new Dictionary<int, DownloadThread>();

}

public Dictionary<int,DownloadThread> AddTODic(int key, DownloadThread thread)

{

if (!mydownThread.ContainsKey(key))

{

mydownThread.Add(key, thread);

}

return mydownThread;

}

public string jisuan()

{

int totalSecond = 0;

if (currentLeght != 0)

{

PerSecondStreamLegth = currentLeght / TotalLeght;

if (PerSecondStreamLegth >= 1)

{

this.myvalue = 100;

}

this.myvalue = PerSecondStreamLegth * 100;

double temp = Math.Ceiling(PerSecondStreamLegth * 100);

Loadspead = string.Format("{0:p}", temp);

Loadspead = temp + "%";

totalSecond += 500;

if (totalSecond / 1000 > TotalLeght / 1024)

{

Loadspead = "超时";

}

//报告下载进度

}

return Loadspead;

}

}

}

复制代码

使用简单的 页面实现下载，每条下载项可以是从网络中下载的。

?

public DownLoadPage()

{

InitializeComponent();

task = new DownloadMusicTask();

this.textBox1.Text = "http://files.sparklingclient.com/079_2009.08.20_ElementBinding.mp3";

this.textBox2.Text = "http://f3.xiami.net/57089/353565/01%201769196206_851967.mp3";

this.textBox3.Text = "http://api.ning.com/files/ZTlTyJnBfjXPa45lorAkBLu5dIaGg4KFya*dsNBYoMZT3dR0Vgq*aV2OOeRxj9rExENLOgkSvs8ZCbSJ8bEsFG5lGf4Moz*F/love.mp3";

this.textBox4.Text = "http://222.174.95.18:8068/musicfile/music/40/39295.wma";

this.textBox5.Text = "http://wap3.shenglong.com.cn/ring/20080925170158617.wma";

this.textBox6.Text = "http://wap3.shenglong.com.cn/ring/20080925170158617.wma";

}

//下载所有

private void DownLoad_Click(object sender, RoutedEventArgs e)

{

}

//取消下载

private void CancelDownLoad_Click(object sender, RoutedEventArgs e)

{

}

//暂停下载

private void StopDowload_Click(object sender, RoutedEventArgs e)

{

}

//单个下载

private void button1_Click(object sender, RoutedEventArgs e)

{

task.DownloadUrl = this.textBox1.Text.Trim();

download();

}

private void button2_Click(object sender, RoutedEventArgs e)

{

task.DownloadUrl = this.textBox2.Text.Trim();

download();

}

private void button3_Click(object sender, RoutedEventArgs e)

{

task.DownloadUrl = this.textBox3.Text.Trim();

download();

}

private void button4_Click(object sender, RoutedEventArgs e)

{

task.DownloadUrl = this.textBox4.Text.Trim();

download();

}

private void button5_Click(object sender, RoutedEventArgs e)

{

task.DownloadUrl = this.textBox5.Text.Trim();

download();

}

private void button6_Click(object sender, RoutedEventArgs e)

{

task.DownloadUrl = this.textBox6.Text.Trim();

download();

}

//多线程

public void download()

{

fileName = System.IO.Path.GetFileName(task.DownloadUrl);

task.MusicSavePath = FileManager.GetSavaPath(fileName,MusicFormats.MP3.ToString());

if (string.IsNullOrEmpty(task.MusicSavePath))

{

task = null;

MessageBox.Show("无法保存文件");

}

task.DownloadTaskID = Guid.NewGuid();

downloadManager.RunWorker(task);

//Deployment.Current.Dispatcher.BeginInvoke(delegate() { down.RunWorker(task); });

}