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   源码介绍

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网络文件获取和读取 解析

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;




namespace DownWy
{
    public partial class MainForm : Form
    {
        //Thread[] thrd = new Thread[4];
        Thread tr = null;
        Threadstats[] Tstatus = new Threadstats[4];
        string dir;
        private string[] DownFileList;

        public MainForm()
        {
            InitializeComponent();

            dt_start.Value = DateTime.Now.AddDays(-30);
            dt_end.Value = DateTime.Now.AddDays(-1);
            for (int i = 0; i < 4; i  )
            {

                Tstatus[i] = new Threadstats();
            }


        }

        private void BT_Start_Click(object sender, EventArgs e)
        {

            if (BT_Start.Text == "开始")
            {

                if (dt_end.Value.Date >= DateTime.Now.Date)
                {

                    MessageBox.Show("结束日期不能超过当前日期");
                    return;
                }
                if (dt_end.Value.Date <= dt_start.Value.Date)
                {
                    MessageBox.Show("结束日期不能小于或者等于开始日期");
                    return;

                }

                if (TE_Dir.Text == "" || !System.IO.Directory.Exists(TE_Dir.Text))
                {
                    MessageBox.Show("保存目录不存在！");
                    return;

                }

                dir = TE_Dir.Text;
                DownFileList = null;
                tr = new Thread(new ThreadStart(DownThread));
                tr.Start();


                BT_Start.Text = "终止";
                return;

            }
            else
            {
                MainForm_FormClosed(this,null);

                BT_Start.Text = "开始";

            }



        }



        private void DownThread()
        {

            DateTime dtbuff = dt_start.Value;

            for (int i = 0; i < 2; i  )
            {

                if (dtbuff > dt_end.Value)
                {
                    return;

                }
                if (Tstatus[i].Isbusy == false)
                {

                    Tstatus[i].Isbusy = true;
                    Tstatus[i].dt = dtbuff;
                    if (Tstatus[i].thrd != null && Tstatus[i].thrd.IsAlive)
                    {
                        Tstatus[i].thrd.Abort();

                    }
                    Tstatus[i].thrd = new Thread(delegate() { DownFile(i); });
                    Tstatus[i].thrd.Start();



                    dtbuff = dtbuff.AddDays(1);
                    System.Threading.Thread.Sleep(100);
                }


                System.Threading.Thread.Sleep(10);








                //让其死循环
                if (i >=1)
                {

                    i = -1;
                }



              


            }






        }


        private void DownFile(int Index)
        {

            System.IO.Stream st = null;
            System.IO.Stream so = null;
            System.Net.HttpWebRequest Myrq = null;
            System.Net.HttpWebResponse myrp = null;
            string Buff = "http://www.chinawuyuan.com/movies/";
            string URL = Buff   Tstatus[Index].dt.ToString("yyyyMMdd")   ".wmv";
            string filename = dir   "/"   Tstatus[Index].dt.ToString("yyyyMMdd")   ".wmv";
            Tstatus[Index].FileName = URL;

            try
            {
                 Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL);
                Myrq.Proxy = System.Net.WebProxy.GetDefaultProxy();

                myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();
                long totalBytes = myrp.ContentLength;
                if (totalBytes < 10000)
                {
                    return;
                }

                Tstatus[Index].filelength = ((float)totalBytes) / 1024 / 1024;
               st = myrp.GetResponseStream();
                so = new System.IO.FileStream(filename, System.IO.FileMode.Create);
                long totalDownloadedByte = 0;
                byte[] by = new byte[1024];
                int osize = st.Read(by, 0, (int)by.Length);
                while (osize > 0)
                {
                    totalDownloadedByte = osize   totalDownloadedByte;
                    System.Windows.Forms.Application.DoEvents();
                    so.Write(by, 0, osize);

                    osize = st.Read(by, 0, (int)by.Length);
                    Tstatus[Index].downfilelength = ((float)totalDownloadedByte) / 1024 / 1024;
                    Tstatus [Index].percent= (float)totalDownloadedByte / (float)totalBytes * 100;

                }


                //文件显示
                if (DownFileList == null)
                {
                    DownFileList = new string[1];
                    DownFileList[0] = Tstatus[Index].FileName;

                }
                else
                {

                    Array.Resize(ref DownFileList, DownFileList.Length   1);
                    DownFileList[DownFileList.Length-1] = Tstatus[Index].FileName;


                }

            }
            catch (System.Exception)
            {
                //throw;
            }
            finally
            {


                if (myrp != null)
                {
                    myrp.Close();
                }

                if (Myrq != null)
                {
                    Myrq.Abort();
                }
                if (so != null)
                {

                    so.Close();
                }
                if (st != null)
                {

                    st.Close();
                }

                Tstatus[Index].Isbusy = false;
                //if (Tstatus[Index].thrd.IsAlive)
                //{
                //    Tstatus[Index].thrd.Abort();
                  
                //}


            }









        }

        struct Threadstats
        {
            public Thread thrd;
            public bool Isbusy;
            public float percent;
            public string FileName;
            public string datetime;

            public DateTime dt;

            public float filelength;
            public float downfilelength;

        }

        private void timer_Refresh_Tick(object sender, EventArgs e)
        {

            ll_1.Text = Tstatus[0].FileName   "    "   Tstatus[0].downfilelength.ToString()   "/"   Tstatus[0].filelength.ToString();
            pb_1.Value = (int)Tstatus[0].percent;


            ll_2.Text = Tstatus[1].FileName   "    "   Tstatus[1].downfilelength.ToString()   "/"   Tstatus[1].filelength.ToString(); ;
            pb_2.Value = (int)Tstatus[1].percent;

            if (DownFileList != null && DownFileList.Length != LB_List.Items.Count)
            {
                LB_List.Items.Clear();
                LB_List.Items.AddRange((object[]) DownFileList);

            }
            else
            {
                if (LB_List.Items.Count!=0)
                {
                    LB_List.Items.Clear();
                }
               

            }


        }

        private void MainForm_FormClosed(object sender, FormClosedEventArgs e)
        {
            if (tr != null && tr.IsAlive)
            {
                tr.Abort();
            }

            for (int i = 0; i < 4; i  )
            {

                if (Tstatus[i].thrd != null && Tstatus[i].thrd.IsAlive)
                {
                    Tstatus[i].thrd.Abort();
                
                }


            }
        }


    }
}