public Task DownloadAndSaveAsync()
{
var tcs = new TaskCompletionSource <object>();
_downloadFromInternet.DownloadAsync().ContinueWith(t =>
{
if (t.Exception != null)
{
tcs.TrySetException(t.Exception.InnerExceptions);
return;
}
_saveToDatabase.SaveAsync(t.Result).ContinueWith(t =>
{
if (t.Exception != null)
{
tcs.TrySetException(t.Exception.InnerExceptions);
}
else
{
tcs.TrySetResult(null);
}
});
});
return(tcs.Task);
}
public async Task DownloadAndSaveAsync()
{
var task1 = _downloadFromInternet1.DownloadAsync();
var task2 = _downloadFromInternet2.DownloadAsync();
var data = await Task.WhenAll(task1, task2);
await _saveToDatabase.SaveAsync(data[0] + data[1]);
}
public void DownloadAndSave(Action <Exception> callback)
{
_downloadFromInternet.DownloadAsync((ex, data) =>
{
if (ex != null)
{
callback(ex);
return;
}
_saveToDatabase.SaveAsync(data, callback);
});
}
public void DownloadAndSaveAsync()
{
_downloadFromInternet.DownloadCompleted += (_, args) =>
{
if (args.Error != null)
{
DownloadAndSaveCompleted?.Invoke(this, new AsyncCompletedEventArgs(args.Error, false, null));
return;
}
var data = args.Data;
_saveToDatabase.SaveCompleted += (_, args) =>
{
DownloadAndSaveCompleted?.Invoke(this, new AsyncCompletedEventArgs(args.Error, false, null));
};
_saveToDatabase.SaveAsync(data);
};
_downloadFromInternet.DownloadAsync();
}
public Task DownloadAndSaveAsync()
{
return(_downloadFromInternet.DownloadAsync()
.Then(data => _saveToDatabase.SaveAsync(data)));
}
private void SaveResults(State state)
{
_saveToDatabase.SaveAsync(state.Data1 + state.Data2, state.Callback);
}
public async Task DownloadAndSaveAsync()
{
var data = await _downloadFromInternet.DownloadAsync();
await _saveToDatabase.SaveAsync(data);
}