private async void gridOMDB_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
var selectedMovie = gridOMDB.Rows[e.RowIndex];
string title = selectedMovie.Cells[0].FormattedValue.ToString();
string year = selectedMovie.Cells[1].FormattedValue.ToString();
string type = selectedMovie.Cells[2].FormattedValue.ToString();
// save new movie
var savedMovie = await _APIService.AddNewMovie(title, year, type);
// update local file
APIService.movies.Add(savedMovie);
// update data table
UpdateMyListDataSource();
tabControl.SelectedTab = tabMyList;
}