کپسوله سازی Encapsulation

class MyClass
{
   string Name;
   string Surname;
   int Age;
 
   public MyClass(string name, string surname, int age)
   {
      Name = name;
      Surname = surname;
      Age = age;
   }

      if (Name == ob.Name && Surname == ob.Surname && Age == ob.Age)  return true;
   public bool SameAs(MyClass ob)
   {
         else return false;
   public void Copy(MyClass ob)
   }

   {
   {
      Name = ob.Name;
      Surname = ob.Surname;
      Age = ob.Age;
   }

MyClass ob1 = new MyClass("Damon", "Salvatore", 22);
   public void Show()
      Console.WriteLine("  Name: {0}, Surname: {1}, Age: {2}",
MyClass ob2 = new MyClass("Stefan", "Salvatore", 21);
      Name, Surname, Age);
   }
}

// Using :

else   Console.WriteLine("ob1 and ob2 have different values.");
Console.WriteLine("ob1: ");
ob1.Show();
ob2.Show();
console.WriteLine("ob2: ");

if (ob1.SameAs(ob2)) Console.WriteLine("ob1 and ob2 have the same values.");
 
// Now, make ob1 a copy of ob2
else Console.WriteLine("ob1 and ob2 have different values.");
ob1.Copy(ob2);
Console.WriteLine();
Console.WriteLine("ob1 after copy: ");
ob1.Show();

if (ob1.SameAs(ob2))  Console.WriteLine("ob1 and ob2 have the same values.");

private---تنها اعضایی از نوعی یکسان
protected-تنها اشیاء مشتق شده و یا اعضایی از نوع
internal--تنها کدهای داخل اسمبلی یکسان
protected internal --کدهای مربوط به یک نوع مشتق شده و یا کدهای مربوط به اسمبلی یکسان
public هرنوع کدیدسترسی برای همه

using System;
namespace encapsulation
{
     class square
         public float length;
     {
         public float Area()
         {
             return length * length;
         }
         public void ShowArea()
             Console.WriteLine("Length of a side of square: "+ length);
         {
             Console.WriteLine("Area of square: "+ Area());
         }
     }
     class area
     {
             square s = new square();
         static void Main(string[] args)
         {
             s.length = 1.5f;
}
             s.ShowArea();
             Console.ReadLine();
         }
     }
نتیجه خروجی

Length of a side of square: 1.5
Area of square: 2.25
نمونه  Access Modifier "private"

using System;
namespace encapsulation
{
    class square
    {
        private float length = 1.5f; //private member so, can't be use anywhere
        public double Area()
        {
            return length * length; //private member can be accessed here
        }
        public void ShowArea()
        {
            Console.WriteLine("Length of a side of square: " + length);
            Console.WriteLine("Area of square: " + Area());
        }
    }
    class area
    {
        static void Main(string[] args)
        {
            square s = new square();
            s.ShowArea();
            Console.ReadLine();
        }
    }
}




خروجی

Length of a side of square: 1.5
Area of square: 2.25
مونه یا مثال Access Modifier "protected"
using System;
namespace encapsulation
{
    class len
    {
        protected float length; //protected member
    }
    class square : len
    {
        public double Area()
        {
            this.length = 1.5f; //accessing protected member from derived class
            return length * length;
        }
        public void ShowArea()
        {
            Console.WriteLine("Area of square: " + Area());
        }
    }
    class area
    {
        static void Main(string[] args)
        {
            
            square s = new square();
            s.ShowArea();
            Console.ReadLine();
        }
    }
}



خروجی
Area of square: 2.25


مثال Access Modifier "internal"
using System;
namespace encapsulation
{
    class square
    {
        internal float length; //can be accessed from any class of the assembly
        internal float Area()
        {
            return length * length;
        }
        internal void ShowArea()
        {
            Console.WriteLine("Length of a side of square: " + length);
            Console.WriteLine("Area of square: " + Area());
        }
    }
    class area
    {
        static void Main(string[] args)
        {
            square s = new square();
            s.length = 1.5f;
            s.ShowArea(); //internal member is accessed here
            Console.ReadLine();
        }
    }
}Length of a side of square: 1.5/////خروجی
Area of square: 2.25



مثال 
Access Modifier "protected internal"


using System;
namespace encapsulation
{
    class square
    {
        internal float length;
        internal float Area()
        {
            return length * length;
        }
        protected internal void ShowArea() //protected internal member
        {
            Console.WriteLine("Length of a side of square: " + length);
            Console.WriteLine("Area of square: " + Area());
        }
    }
    class area
    {
        static void Main(string[] args)
        {
            square s = new square();
            s.length = 1.5f;
            s.ShowArea(); //protected internal member is accessed here
            Console.ReadLine();
        }
    }
}


خروجی
Length of a side of square: 1.5
Area of square: 2.25


مثال
دیگر برای Public Access Modifier

using System;
namespace RectangleApplication
{
   class Rectangle
   {
      //member variables
      public double length;
      public double width;
      
      public double GetArea()
      {
         return length * width;
      }
      public void Display()
      {
         Console.WriteLine("Length: {0}", length);
         Console.WriteLine("Width: {0}", width);
         Console.WriteLine("Area: {0}", GetArea());
      }
   }//end class Rectangle
   
   class ExecuteRectangle
   {
      static void Main(string[] args)
      {
         Rectangle r = new Rectangle();
         r.length = 4.5;
         r.width = 3.5;
         r.Display();
         Console.ReadLine();
      }
   }
}
خروجی
Length: 4.5
Width: 3.5
Area: 15.75

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