private void btnAdd_Click(object sender, RoutedEventArgs e)
{
string path = tbRef.Text;
string name = tbName.Text;
if (path != String.Empty && name != String.Empty)
{
file = new FileDownload(path, name, 100);
file._id = id;
ProgressBar bar = new ProgressBar();
bar.Maximum = file.ContentLength;
bar.Value = file.BytesWritten;
ItemElement it = new ItemElement {
Id = id, Title = path, Bar = (int)bar.Value
};
if (CheckItems(it.Title))
{
try
{
file.Start(it, History, Active);
}
catch (Exception ex)
{
tbEx.Text = ex.Message;
Delete(file, it);
}
Items.Add(it);
Active.Add(it);
id++;
threads.Add(file);
Serialize(threads.ToArray(), "threads.xml");
Serialize(Items, "items.xml");
}
}
}
private async Task Start(ItemElement item, ObservableCollection <ItemElement> history, ObservableCollection <ItemElement> active, int range)
{
if (!_allowedToRun)
{
throw new InvalidOperationException();
}
var request = (HttpWebRequest)WebRequest.Create(_source);
request.Method = "GET";
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)";
request.AddRange(range);
using (var response = await request.GetResponseAsync())
{
using (var responseStream = response.GetResponseStream())
{
using (var fs = new FileStream(_destination, FileMode.Append, FileAccess.Write, FileShare.ReadWrite))
{
item.Status = Statuses.Active;
while (_allowedToRun)
{
var buffer = new byte[_chunkSize];
var bytesRead = await responseStream.ReadAsync(buffer, 0, buffer.Length);
if (bytesRead == 0)
{
break;
}
await fs.WriteAsync(buffer, 0, bytesRead);
BytesWritten += bytesRead;
item.Bar = BytesWritten;
Application.Current.Dispatcher.Invoke(() => { });
}
if ((int)item.Bar >= _contentLength)
{
item.Status = Statuses.Completed;
active.Remove(item);
history.Add(item);
Application.Current.Dispatcher.Invoke(() => { });
}
await fs.FlushAsync();
}
}
}
}
public void Pause(ItemElement item)
{
_allowedToRun = false;
item.Status = Statuses.Paused;
}
public Task Start(ItemElement item, ObservableCollection <ItemElement> history, ObservableCollection <ItemElement> active)
{
_allowedToRun = true;
return(Start(item, history, active, BytesWritten));
}
private void Delete(FileDownload file, ItemElement it)
{
Items.Remove(it);
threads.Remove(file);
Active.Remove(it);
}