public void Download(DownloadInfo info)
{
_downloadList.Enqueue(info);
if (isStop)
{
isStop = false;
thread = new Thread(DownloadThread);
thread.IsBackground = true;
thread.Start();
}
}
private void DownloadThread()
{
while (!isStop && _downloadList.Count > 0)
{
DownloadInfo info = _downloadList.Dequeue();
string dirPath = Path.GetDirectoryName(info._path);
if (!string.IsNullOrEmpty(dirPath) && !Directory.Exists(dirPath))
{
Directory.CreateDirectory(dirPath);
}
FileStream fileStream = null;
if (File.Exists(info._path))
{
File.Delete(info._path);
}
fileStream = File.Create(info._path);
long fileLength = fileStream.Length;
curDownloadFile = info._path;
float totalLength = GetLength(info._url);
if (fileLength < totalLength)
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(info._url);
request.AddRange((int)fileLength);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
fileStream.Seek(fileLength, SeekOrigin.Begin);
Stream httpStream = response.GetResponseStream();
byte[] buffer = new byte[1024];
int length = httpStream.Read(buffer, 0, buffer.Length);
while (length > 0)
{
if (isStop)
{
break;
}
fileStream.Write(buffer, 0, length);
fileLength += length;
progress = fileLength / totalLength * 100;
fileStream.Flush();
length = httpStream.Read(buffer, 0, buffer.Length);
}
httpStream.Close();
httpStream.Dispose();
}
else
{
progress = fileLength / totalLength * 100;
}
fileStream.Close();
fileStream.Dispose();
if (check != null)
{
if (!check(info._sPath))
{
_downloadList.Enqueue(info);
}
}
}
Close();
if (callback != null)
{
callback();
}
}
