public int AddCarRow(Car car) { string qInsert = "INSERT INTO CAR ('regNr', 'brand', 'model', 'year', 'forSale') VALUES (@regNr, @brand, @model, @year, @forSale);"; SQLiteCommand dbCommand = new SQLiteCommand(qInsert, dbConn); OpenConnection(); dbCommand.Parameters.AddWithValue(@"regNr", car.GetRegNr()); dbCommand.Parameters.AddWithValue(@"brand", car.GetBrand()); dbCommand.Parameters.AddWithValue(@"model", car.GetModel()); dbCommand.Parameters.AddWithValue(@"year", car.GetYear()); dbCommand.Parameters.AddWithValue(@"forSale", Convert.ToInt32(car.GetForSale())); int result = dbCommand.ExecuteNonQuery(); CloseConnection(); return(result); }