How to display data from database with multiple tables to data grid view?

 private void LoadData()
    {
        setConnection();
        sql_con.Open();
        sql_cmd = sql_con.CreateCommand();
        string CommandText = "SELECT Rents.Name, Rents.Brand_Model_Plate_Number, Rents.rental_date,Rents.return_date,Car.rate,Payment.charges FROM Rents INNER JOIN Car ON Rents.rental_id = Car.car_id INNER JOIN Payment ON Rents.rental_id = Payment.payment_id; ";
        DB = new SQLiteDataAdapter(CommandText, sql_con);
        DS.Reset();
        DB.Fill(DS);
        DT = DS.Tables[0];
        dgvBills.DataSource = DT;
        sql_con.Close();
    }

-\loads data :Only shows the column name but no data was shown