private void DeleteDownload(Model.Download download)
{
download.ResetDownloadPart();
download.TotalFileSize = 0;
DownloadCancel?.Invoke(this, new MyDownloadEventArgs());
}
private void DownloadServiceOnDownloadCancel(object sender, MyDownloadEventArgs myDownloadEventArgs)
{
Download.State = CurrentDownloadState.Cancel;
Debug.WriteLine("Download cancel");
DownloadCancel?.Invoke(sender, myDownloadEventArgs);
}
private void WebClientOnDownloadFileCompleted(object sender, AsyncCompletedEventArgs asyncCompletedEventArgs)
{
if (asyncCompletedEventArgs.Cancelled == true)
{
DownloadCancel?.Invoke(this, new MyDownloadEventArgs());
}
else
{
DownloadComplete?.Invoke(this, new MyDownloadEventArgs());
}
}
private async Task RunDownload(Model.Download download, Action <HttpWebRequest> configureRequest, FileRenameStreamer fileRenameStreamer)
{
try
{
_cancellationTokenSource = new CancellationTokenSource();
var request = (HttpWebRequest)WebRequest.Create(new Uri(download.SourcePath));
configureRequest(request);
using (var response = await request.GetResponseAsync())
{
fileRenameStreamer.SetContentLength(response.ContentLength);
var data = response.GetResponseStream();
using (fileRenameStreamer)
{
var byteBuffer = fileRenameStreamer.GetByteBuffer();
fileRenameStreamer.SetStreamPosition(download.GetBytesFromAllParts());
download.TotalFileSize = fileRenameStreamer.GetTotalFileSize();
await MakeDownload(download, data, byteBuffer, _cancellationTokenSource.Token, fileRenameStreamer);
}
}
}
catch (IOException)
{
DownloadCancel?.Invoke(this, new MyDownloadEventArgs());
}
catch (OperationCanceledException)
{
if (download.State == CurrentDownloadState.Cancel)
{
DeleteDownload(download);
}
else if (download.State == CurrentDownloadState.Pause)
{
DownloadPause?.Invoke(this, new MyDownloadEventArgs());
}
else
{
DeleteDownload(download);
}
}
catch (WebException)
{
DownloadCancel?.Invoke(this, new MyDownloadEventArgs());
}
}
public async void DownloadFile(Model.Download download)
{
try
{
using (_webClient = new WebClient())
{
_webClient.DownloadFileCompleted += WebClientOnDownloadFileCompleted;
_webClient.DownloadProgressChanged += WebClientOnDownloadProgressChanged;
await _webClient.DownloadFileTaskAsync(new Uri(download.SourcePath),
download.TargetPathWithFileName);
}
}
catch (Exception e)
{
DownloadCancel?.Invoke(this, new MyDownloadEventArgs());
}
}