(C#) Head First - 캡슐화 PartyPlaner

 

DinnerParty.zip

Form1.cs

 

 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
 
namespace DinnerParty
{
    public partial class Form1 : Form
    {
        DinnerParty dinnerParty;
        public Form1()
        {
            InitializeComponent();
            dinnerParty = new DinnerParty((int)numericUpDown1.Value,checkBox1.Checked,
                                               checkBox2.Checked);
 
            DisplayDinnerPartyCost();
        }
 
        private void DisplayDinnerPartyCost()
        {
            decimal Cost = dinnerParty.Cost;
            label3.Text = Cost.ToString("c");
        }
 
        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            dinnerParty.NumberOfPeople = (int)numericUpDown1.Value;
            DisplayDinnerPartyCost();
        }
 
        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            dinnerParty.FancyDecorations = checkBox1.Checked;
            DisplayDinnerPartyCost();
        }
 
        private void checkBox2_CheckedChanged(object sender, EventArgs e)
        {
            dinnerParty.HealthyOption = checkBox2.Checked;
            DisplayDinnerPartyCost();
        }
    }
}
 

DinnerParty.cs

 

 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace DinnerParty
{
    
    class DinnerParty
    {
        public int NumberOfPeople { get; set; }
        public bool FancyDecorations { get; set; }
        public bool HealthyOption { get; set; }
 
        public decimal CostOfDecorations = 0;
        public const int CostOfFoodPerPerson = 25;
        public DinnerParty(int number,bool healthy,bool fancyDeco)
        {
            NumberOfPeople = number;
            FancyDecorations = fancyDeco;
            HealthyOption = healthy;
        }
        public decimal setHealthyOption()
        {
            decimal costOfbeverage;
            if (HealthyOption)
            {
                costOfbeverage = 5.00M;
            }
            else
            {
                costOfbeverage = 20.00M;
            }
            return costOfbeverage;
        }
 
        private decimal CalculateCostOfDecorations()
        {
            decimal costOfDeco;
            if (FancyDecorations)
            {
                costOfDeco = (NumberOfPeople * 15.00M) + 50M;
            }
            else
            {
                costOfDeco = (NumberOfPeople * 7.50M) + 30M;
            }
            return costOfDeco;
        }
 
        public decimal Cost
        {
            get{
                decimal total = CalculateCostOfDecorations();
                total += ((setHealthyOption() + CostOfFoodPerPerson) * NumberOfPeople);
                if(HealthyOption)
                {
                    total *= .95M;
                }
                return total;
            }
 
        }
    }
}