private void btnGetAlbums_Click(object sender, EventArgs e)
{
BGErrorMessage = "";
dgvPhotosets.Rows.Clear();
SearchAccountUser = (User)cbSearchAccount.SelectedItem;
if (SearchAccountUser == null)
{
MessageBox.Show("No search account selected");
return;
}
PhotosetList = new SortableBindingList <Photoset>();
FormProgress dlg = new FormProgress("Find albums", BGFindPhotosets);
// Show dialog with Synchronous/blocking call.
// BGFindPhotosets() is called by dialog.
DialogResult result = dlg.ShowDialog();
if (result == DialogResult.OK)
{
if (!String.IsNullOrWhiteSpace(BGErrorMessage))
{
MessageBox.Show(BGErrorMessage);
}
else
{
bindingSourcePhotosets.DataSource = PhotosetList;
if (dgvPhotosets.Rows.Count > 0 &&
dgvPhotosets.Rows[0].Cells.Count > 0)
{
dgvPhotosets.CurrentCell = dgvPhotosets.Rows[0].Cells[0];
dgvPhotosets.Rows[0].Selected = true;
}
}
}
else
{
// Search was canceled. Do nothing.
}
}
// Background worker task to search selected photosets.
private void BGDownloadPhotosets(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = (BackgroundWorker)sender;
worker.ReportProgress(0, "Connecting");
PhotoList = new SortableBindingList <Photo>();
// Count the number of enabled photosets, so we can do an estimate of percent complete;
int enabledPhotosets = 0;
foreach (Photoset photoset in PhotosetList)
{
if (photoset.EnableSearch)
{
enabledPhotosets++;
}
}
if (enabledPhotosets == 0)
{
// No photosets are enabled. We are done.
return;
}
try
{
int indexPhotoset = 0;
FlickrNet.Flickr f = FlickrManager.GetFlickrAuthInstance();
if (f == null)
{
BGErrorMessage = "You must authenticate before you can download data from Flickr.";
return;
}
// Iterate over the photosets and get the photos from each set.
FlickrNet.PhotosetPhotoCollection photoCollection = new FlickrNet.PhotosetPhotoCollection();
foreach (Photoset photoset in PhotosetList)
{
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
if (photoset.EnableSearch)
{
int percent = indexPhotoset * 100 / enabledPhotosets;
string description = "Searching Album " + photoset.Title;
worker.ReportProgress(percent, description);
int page = 1;
int perpage = 500;
do
{
if (worker.CancellationPending) // See if cancel button was pressed.
{
e.Cancel = true;
return;
}
photoCollection = f.PhotosetsGetPhotos(photoset.PhotosetId, SearchExtras, page, perpage);
#if false
// It is not clear from the documentation whether the limit of 4000 photos per search applies
// to album searches. If an album has more than 4000 photos, is the result of GetPhotos
// accurate? I'm going to assume for now that it is. If not, you can enable this code.
if (photoCollection.Total > 3999)
{
BGErrorMessage = $"Too many photos: {photoCollection.Total}";
return;
}
#endif
foreach (FlickrNet.Photo flickrPhoto in photoCollection)
{
AddPhotoToList(f, flickrPhoto, photoset);
}
// Calculate percent complete based on both how many photo sets we have completed,
// plus how many pages we have read
percent = (indexPhotoset * 100 + page * 100 / photoCollection.Pages) / enabledPhotosets;
worker.ReportProgress(percent, description);
page = photoCollection.Page + 1;
}while (page <= photoCollection.Pages);
indexPhotoset++;
}
}
}
catch (FlickrNet.FlickrException ex)
{
BGErrorMessage = "Search failed. Error: " + ex.Message;
return;
}
DownloadFiles(sender, e);
}
private void BGDownloadAllPhotos(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = (BackgroundWorker)sender;
PhotoList = new SortableBindingList <Photo>();
worker.ReportProgress(0, "Searching all photos");
FlickrNet.Flickr f = FlickrManager.GetFlickrAuthInstance();
if (f == null)
{
BGErrorMessage = "You must authenticate before you can download data from Flickr.";
return;
}
try
{
FlickrNet.PhotoSearchOptions options = new FlickrNet.PhotoSearchOptions();
options.Extras = SearchExtras;
options.SortOrder = FlickrNet.PhotoSearchSortOrder.DateTakenAscending;
if (Settings.FilterByDate)
{
options.MinTakenDate = Settings.StartDate.Date;
options.MaxTakenDate = Settings.StopDate.Date + new TimeSpan(23, 59, 59);
}
options.UserId = SearchAccountUser.UserId;
options.Page = 1;
options.PerPage = 500;
FlickrNet.PhotoCollection photoCollection;
do
{
if (worker.CancellationPending) // See if cancel button was pressed.
{
return;
}
photoCollection = f.PhotosSearch(options);
if (photoCollection.Total > 3999)
{
BGErrorMessage = $"Too many photos: {photoCollection.Total}";
return;
}
foreach (FlickrNet.Photo flickrPhoto in photoCollection)
{
AddPhotoToList(f, flickrPhoto, null);
}
// Calculate percent complete based on how many pages we have completed.
int percent = (options.Page * 100 / photoCollection.Pages);
worker.ReportProgress(percent, "Searching all photos");
options.Page = photoCollection.Page + 1;
}while (options.Page <= photoCollection.Pages);
}
catch (FlickrNet.FlickrException ex)
{
BGErrorMessage = "Download failed. Error: " + ex.Message;
return;
}
DownloadFiles(worker, e);
}