Properties and Encapsulation

Computed Properties

A computed property calculates its value from other object state.

Computed Properties

ComputedProperties.cs 
using System;

class Rectangle
{
    public int Width { get; set; }
    public int Height { get; set; }

    public int Area
    {
        get { return Width * Height; }
    }
}

class Program
{
    static void Main()
    {
        int height = ;
        Rectangle rectangle = new Rectangle();
        rectangle.Width = 5;
        rectangle.Height = height;

        Console.WriteLine($"height={height}");
        Console.WriteLine($"area={rectangle.Area}");
    }
}

using System;

class Rectangle
{
    public int Width { get; set; }
    public int Height { get; set; }

    public int Area
    {
        get { return Width * Height; }
    }
}

class Program
{
    static void Main()
    {
        int height = ;
        Rectangle rectangle = new Rectangle();
        rectangle.Width = 5;
        rectangle.Height = height;

        Console.WriteLine($"height={height}");
        Console.WriteLine($"area={rectangle.Area}");
    }
}

using System;

class Rectangle
{
    public int Width { get; set; }
    public int Height { get; set; }

    public int Area
    {
        get { return Width * Height; }
    }
}

class Program
{
    static void Main()
    {
        int height = ;
        Rectangle rectangle = new Rectangle();
        rectangle.Width = 5;
        rectangle.Height = height;

        Console.WriteLine($"height={height}");
        Console.WriteLine($"area={rectangle.Area}");
    }
}
computed property A computed property returns a value instead of storing one directly.