Добрый день .. Пытаюсь сделать загручик файлов необходимы датчики скорости ,сколько загруженно ,весь размер ..
Я сам новичёк но не могу понять Как это сделать
Использую Этот класс
| Код |
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using System.Threading;
using System.Windows.Forms;
namespace Dwn123
{
class Downloader
{
public DateTime DwNLoadChange;
private const int chunkSize = 1024;
private bool doDownload = true;
public bool AcceptRanges = false;
private string url;
private string filename;
private Thread downloadThread;
public long FileSize
{
get;
private set;
}
public long Progress
{
get;
private set;
}
public Downloader(string Url, string Filename)
{
this.url = Url;
this.filename = Filename;
this.CheckAcceptRanges();
}
public void StartDownload()
{
Progress = 0;
FileSize = 0;
commenceDownload();
}
public void PauseDownload()
{
doDownload = false;
downloadThread.Join();
}
public void ResumeDownload()
{
doDownload = true;
commenceDownload();
}
private void commenceDownload()
{
downloadThread = new Thread(downloadWorker);
downloadThread.Start();
}
public void CheckAcceptRanges()
{
HttpWebRequest request = WebRequest.Create(this.url) as HttpWebRequest;
request.Method = "HEAD";
var response = request.GetResponse() as HttpWebResponse;
foreach (string sKey in response.Headers.Keys)
{
if (sKey.ToString() == "Accept-Ranges")
{
this.AcceptRanges = true;
break;
}
else
{
this.AcceptRanges = false;
}
}
}
public void downloadWorker()
{
HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
FileMode filemode;
if (Progress == 0) //Если сущетвет процесс "закачки"
{
filemode = FileMode.CreateNew;
}
else
{
filemode = FileMode.Append;
myHttpWebRequest.AddRange((int)Progress);
}
using (FileStream fs = new FileStream(filename, filemode))
using (HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse())
{
Stream receiveStream = myHttpWebResponse.GetResponseStream();
FileSize = myHttpWebResponse.ContentLength;
byte[] read = new byte[chunkSize];
int count;
while ((count = receiveStream.Read(read, 0, chunkSize)) > 0 && doDownload)
{
fs.Write(read, 0, count);
count = receiveStream.Read(read, 0, chunkSize);
Progress += count;
}
}
}
}
}
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