Why do we use internal keyword in C#?

Internal keyword allows you to set internal access specifier.

Internal access specifier allows a class to expose its member variables and member functions to other functions and objects in the current assembly.

Any member with internal access specifier can be accessed from any class or method defined within the application in which the member is defined.

Example

using System;

namespace RectangleApplication {
   class Rectangle {

      internal double length;
      internal double width;

      double GetArea() {
         return length * width;
      }

      public void Display() {
         Console.WriteLine("Length: {0}", length);
         Console.WriteLine("Width: {0}", width);
         Console.WriteLine("Area: {0}", GetArea());
      }
   }

   class Demo {
      static void Main(string[] args) {
         Rectangle rc = new Rectangle();
         rc.length = 10.35;
         rc.width = 8.3;
         rc.Display();
         Console.ReadLine();
      }
   }
}

karthikeya Boyini

Updated on 21-Jun-2020 15:28:22

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