private void OnDone(object sender, AsyncOperationCompletedEventArgs e)
{
UserState ut = e.UserState as UserState;
if (this.states.Contains(ut) == false)
return;
this.states.Remove(ut);
if (e.Error == null && e.Cancelled == false)
{
if (ut.opType == UserState.OperationType.query ||
ut.opType == UserState.OperationType.queryForBackup)
{
if (e.Feed != null)
{
this.photoFeed = e.Feed as PicasaFeed;
this.InitializeList(ut.filename);
}
}
if (ut.opType == UserState.OperationType.upload)
{
if (e.Entry != null)
{
ListViewItem item = new ListViewItem(e.Entry.Title.Text);
item.Tag = e.Entry;
this.PhotoList.Items.Add(item);
this.FileInfo.Text = "Upload succeeded";
}
}
if (ut.opType == UserState.OperationType.download ||
ut.opType == UserState.OperationType.downloadList)
{
if (e.ResponseStream != null)
{
WriteFile(ut.filename, e.ResponseStream);
this.FileInfo.Text = "Saved file: " + ut.filename;
}
}
if (ut.opType == UserState.OperationType.downloadList)
{
// we need to create a new object for uniqueness
UserState u = new UserState();
u.counter = ut.counter + 1;
u.feed = ut.feed;
u.foldername = ut.foldername;
u.opType = UserState.OperationType.downloadList;
if (u.feed.Entries.Count > 0)
{
u.feed.Entries.RemoveAt(0);
this.PhotoList.Items.RemoveAt(0);
}
this.states.Add(u);
SaveAnotherPictureDelegate d = new SaveAnotherPictureDelegate(this.CreateAnotherSaveFile);
this.BeginInvoke(d, u);
}
if (ut.opType == UserState.OperationType.queryForBackup)
{
UserState u = new UserState();
u.opType = UserState.OperationType.downloadList;
u.feed = this.photoFeed;
u.counter = 1;
u.foldername = ut.foldername;
u.filename = ut.foldername + "\\image1.jpg";
this.states.Add(u);
SaveAnotherPictureDelegate d = new SaveAnotherPictureDelegate(this.CreateAnotherSaveFile);
this.BeginInvoke(d, u);
}
}
this.progressBar.Value = 0;
if (this.states.Count == 0)
{
this.CancelAsync.Enabled = false;
this.CancelAsync.Visible = false;
}
}