.NET interview question - What is Shadowing?

Answer:

Shadowing is a concept of altering the behaviour of the base class member. It basically replaces complete element of the parent class like method becomes a variable.
For example: In the below example in class1 'i' is declared as variable whereas in class2 'i' is declared as a method.

class Program
  {
      static void Main(string[] args)
      {
          class1 obj = new class1();
          class2 obj1 = new class2();
          obj1.i();                 //here i is treated as method
          Console.WriteLine(obj.i); //here i is treated as variable
          Console.ReadLine();
      }
  }
  class class1
  {
      public int i=2;
  }
  class class2 : class1
  {
      public void i()
      {
          Console.WriteLine("Hello World");
      }
  }

Regards,

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