private void SelectScreenLoadedHandler(object sender, RoutedEventArgs e)
{
CheckDisposedState();
ThumbnailList list = _selectScreen.ListControl.List;
if (ExecutionEngine.Context.Contains(Constants.PhotosToRemove))
{
System.Collections.Generic.List <string> filesToRemove = (System.Collections.Generic.List <string>)ExecutionEngine.Context[Constants.PhotosToRemove];
list.Items.
Where(item => filesToRemove.Contains(item.Photo.SourceFileName)).
ToList().
ForEach(item => list.RemoveItem(item, false));
ExecutionEngine.Context.Remove(Constants.PhotosToRemove);
}
if (ExecutionEngine.Context.Contains(Constants.FoundPhotos))
{
var foundPhotos = (System.Collections.ObjectModel.Collection <PhotoItem>)ExecutionEngine.Context[Constants.FoundPhotos];
var newPhotosList = foundPhotos.Where(photo => !list.Items.Any(item => photo.SourceFileName.Equals(item.Photo.SourceFileName))).ToList <PhotoItem>();
var newPhotosCollection = new System.Collections.ObjectModel.Collection <PhotoItem>(newPhotosList);
list.LoadItems(newPhotosCollection);
ExecutionEngine.Context.Remove(Constants.FoundPhotos);
}
}
