public async Task AddImages(IEnumerable <string> filePathes)
{
var newVMs = new List <ImageViewModel>();
foreach (var filePath in filePathes)
{
if (Contains(filePath))
{
continue;
}
var image = new ImageModel(filePath);
_collection.Add(image);
var vm = ViewModelFactory.CreateImageViewModel(image);
Add(vm);
newVMs.Add(vm);
}
foreach (var imageViewModel in newVMs)
{
await imageViewModel.LoadPreviewImage().ConfigureAwait(true);
}
}