Reference - Homework Week 06

第六周作業程式碼參考
執行檔

[Code Review] Team 07 - Hw06 Version2

執行檔.exe

[Code Review] Team 02 - Hw06 Other 01

老師在之前的投影片有提到：父類別的參考可以用來記錄子類別的物件，但就無法使用子類別的特有屬性與方法了。

但有時候還是需要得到子類別特有的屬性或使用特有的方法時，這邊提供了一個寫法給大家參考（但可能很爛），也回應一些組別遇到的問題。這個方法建立在多型的概念上。


按我顯示程式碼

class Program
    {
        static void Main(string[] args)
        {
            Shape3D MyCube = new Cube(1.0);
            Console.WriteLine(MyCube.GetFirstFeature().ToString());
            Console.ReadKey();
            // Output: 1 
        }
    }

    class Shape3D
    {
        /******** 方法 ********/
        public virtual double GetFirstFeature()
        {
            return 0.0;
        }
    }

    class Cube : Shape3D
    {
        /******** 屬性 ********/
        double Side = 0.0;

        /******** 建構子 ********/
        public Cube(double p_side)
        {
            Side = p_side;
        }

        /******** 方法 ********/
        public override double GetFirstFeature()
        {
            return Side;
        }
    }

[Code Review] Team 06 - Hw06

TextBox的顯現有參考第二組的寫法. 執行檔 專案檔

[Code Review] Team 09 - Hw06

在此超有誠意的附上整個專案檔
https://drive.google.com/file/d/0B9vj2TjBHPutWVBablNsVU5NNTJ0MTdmd0lrQjRGQ0FlbU00/edit?usp=sharing

[Code Review] Team 10 - Hw06

[Code Review] Team 03 - Hw06

執行檔 Form1.cs 按我顯示

public Form1()
        {
            InitializeComponent();
            InitialSet();
                 
        }
        double[] density = { 2.7, 7.9, 11.34 };
        Shape[] shape= new Shape[50];

        private void cBox_shape_SelectedIndexChanged(object sender, EventArgs e)
        {
            switch (cBox_shape.SelectedIndex)
            {
                case 0:
                    lbl_1.Text = "半徑";   
                    txt_1.Visible = true;
                    lbl_1.Visible = true;
                    txt_2.Visible = false;
                    lbl_2.Visible = false;
                    break;
                case 1:
                    txt_1.Visible = true;
                    lbl_1.Visible = true;
                    txt_2.Visible = false;
                    lbl_2.Visible = false;
                    lbl_1.Text = "邊長";
                    break;
                case 2:
                    lbl_1.Text = "半徑";          
                    txt_1.Visible = true;
                    lbl_1.Visible = true;
                    txt_2.Visible = true;
                    lbl_2.Visible = true;
                    break;
                case 3:
                    lbl_1.Text = "邊長";
                    txt_1.Visible = true;
                    lbl_1.Visible = true;
                    txt_2.Visible = true;
                    lbl_2.Visible = true;
                    break;
                default:
                    MessageBox.Show("Error");
                    break;
            }
        }       

        private void btn_add_Click(object sender, EventArgs e)
        {
            int amount = Shape.Amount;
            switch (cBox_shape.SelectedIndex)
            {
                
                case 0:
                    if (txt_1.Text == "")
                        MessageBox.Show("Error");
                    else
                    {
                        Ball ball = Ball.Create(double.Parse(txt_1.Text), density[cBox_material.SelectedIndex]);
                        shape[amount] = ball;
                        textBox1.AppendText("Ball" + "\t" + txt_1.Text + "\t" + txt_2.Text + "\n");
                    }
                    break;
                case 1:
                    if (txt_1.Text == "")
                        MessageBox.Show("Error");
                    else
                    {
                        Cube cube = Cube.Create(double.Parse(txt_1.Text), density[cBox_material.SelectedIndex]);
                        shape[amount] = cube;
                        textBox1.AppendText("Cube" + "\t" + txt_1.Text + "\t" + txt_2.Text + "\n");
                    }
                    break;
                case 2:
                    if (txt_1.Text == "")
                        MessageBox.Show("Error");
                    else
                    {
                        Cylinder cylinder = Cylinder.Create(double.Parse(txt_1.Text), double.Parse(txt_2.Text), density[cBox_material.SelectedIndex]);
                        shape[amount] = cylinder;
                        textBox1.AppendText("Cylinder" + "\t" + txt_1.Text + "\t" + txt_2.Text+"\n");
                    }
                    break;
                case 3:
                    if (txt_1.Text == "")
                        MessageBox.Show("Error");
                    else
                    {
                        Pyramid pyramid = Pyramid.Create(double.Parse(txt_1.Text), double.Parse(txt_2.Text), density[cBox_material.SelectedIndex]);
                        shape[amount] = pyramid;
                        textBox1.AppendText("Pyramid" + "\t" + txt_1.Text + "\t" + txt_2.Text + "\n");
                    }
                    break;
                default:
                    MessageBox.Show("Error");
                    break;
            }
            txt_number.Text = Shape.Amount.ToString();
        }

        private void InitialSet()
        {
            txt_1.Visible = false;
            lbl_1.Visible = false;
            txt_2.Visible = false;
            lbl_2.Visible = false;
        }

        private void btn_calculate_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < Shape.Amount; i++)
            {
  
                textBox2.AppendText(shape[i].Show());
   
            }
        }
   
    }

Shape

class Shape
    {
        protected double L1, L2;
        protected double density;
        protected double pi = 3.1415926;
        protected static int amount = 0;
        public static int Amount
        {
            get { return amount; }
        }

        public Shape(double L1, double density)
        {
            this.L1 = L1;
            this.density = density;
            amount++;
        }
        public Shape(double L1, double L2, double density)
        {
            this.L1 = L1;
            this.L2 = L2;
            this.density = density;
            amount++;
        }
        public virtual double CalVolume() { return 0; }
        public virtual string GetName() { return ""; }
        public double CalQuality() { return CalVolume() * density; }
        public string Show()
        {
            string str="";
            str += GetName()+"\t";
            str += L1 + "\t" + L2 + "\t";
            str += density + "\t";
            str += CalVolume() + "\t";
            str += CalQuality() + "\n";
            return str;
        }
    }

Ball

class Ball : Shape
    {
        
        public Ball(double L1, double density) : base(L1, density) { }
        public static Ball Create(double L1,  double density)
        {
            Ball ball = null;
            if (L1 <= 0 )
            {
                return ball;
            }
            else
            {
                ball = new Ball(L1, density);
                return ball;
            }
        }
        public override double CalVolume()
        {
            return pi * L1 * L1 * L1 * 4 / 3;
        }
        public override string GetName()
        {
            return "Ball";
        }
    }

Cube

class Cube : Shape
    {
        public Cube(double L1, double density) : base(L1, density) { }
        public static Cube Create(double L1, double density)
        {
            Cube cube = null;
            if (L1 <= 0 )
            {
                return cube;
            }
            else
            {
                cube = new Cube(L1, density);
                return cube;
            }
        }
        public override double CalVolume()
        {
            return L1 * L1 * L1 ;
        }
        public override string GetName()
        {
            return "Cube";
        }
    }

Cylinder

class Cylinder : Shape
    {
        public Cylinder(double L1, double L2, double density) : base(L1, L2, density) { }
        public static Cylinder Create(double L1, double L2, double density)
        {
            Cylinder cylinder = null;
            if (L1 <= 0 || L2 <= 0)
            {
                return cylinder;
            }
            else
            {
                cylinder = new Cylinder(L1, L2, density);
                return cylinder;
            }
        }
        public override double CalVolume()
        {
            return pi * L1 * L1 * L2;
        }
        public override string GetName()
        {
            return "Cylinder";
        }

    }

Pyramid

class Pyramid : Shape
    {
         public Pyramid(double L1, double L2, double density) : base(L1, L2, density) { }
         public static Pyramid Create(double L1, double L2, double density)
         {
             Pyramid pyramid = null;
             if (L1 <= 0 || L2 <= 0)
             {
                 return pyramid;
             }
             else
             {
                 pyramid = new Pyramid(L1, L2, density);
                 return pyramid;
             }
         }
         public override double CalVolume()
         {
             return (L1 * L1 * L2) / 3;
         }
         public override string GetName()
         {
             return "Pyramid";
         }
 

    }

[Code Review] Team 04 - Hw06

程式檔

[Code Review] Team 07 - Hw06

檔案下載

[Code Review] Team 01 - Hw06

[Code Review] Team 05 - Hw06