private void Import_Click(object sender, RoutedEventArgs e)
{
TileManagerViewModel vm = DataContext as TileManagerViewModel;
OpenFileDialog dialog = new OpenFileDialog()
{
Filter = "Collection package|*.col",
AddExtension = true
};
if (dialog.ShowDialog() == true)
{
CollectionSet imported = CollectionSet.ImportFromFile(dialog.FileName);
vm.LoadedCollections.Add(imported);
vm.SelectedCollection = imported;
}
}