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;
        
        }
    }
}

   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); });
            
        }