Illustrates member hiding : Derived Class : Class C# Examples

    
using  System;

public  class  BaseClass
{
    public  string  lastName;
    public  string  firstName;

    public  BaseClass(string  lastName,  string  firstName)
    {
        Console.WriteLine("In  BaseClass  constructor");
        this.lastName  =  lastName;
        this.firstName  =  firstName;
        Console.WriteLine("this.lastName  =  "  +  this.lastName);
        Console.WriteLine("this.firstName  =  "  +  this.firstName);
    }

    public  void  DisplayfirstName()
    {
        Console.WriteLine("In  BaseClass  DisplayfirstName()  method");
        Console.WriteLine("firstName  =  "  +  firstName);
    }

}

public  class  DerivedClass  :  BaseClass
{
    public  new  string  firstName;

    public  DerivedClass(string  lastName,  string  firstName)  :  base(lastName,  "Test")
    {
        Console.WriteLine("In  DerivedClass  constructor");
        this.firstName  =  firstName;
        Console.WriteLine("this.firstName  =  "  +  this.firstName);
    }

    public  new  void  DisplayfirstName()
    {
        Console.WriteLine("In  DerivedClass  DisplayfirstName()  method");
        Console.WriteLine("firstName  =  "  +  firstName);
        base.DisplayfirstName();
    }
}


class  MainClass
{

    public  static  void  Main()
    {
        Console.WriteLine("Creating  a  DerivedClass  object");
        DerivedClass  myDerivedClass  =  new  DerivedClass("A",  "B");

        Console.WriteLine("Back  in  Main()  method");
        Console.WriteLine("myDerivedClass.lastName  =  "  +  myDerivedClass.lastName);
        Console.WriteLine("myDerivedClass.firstName  =  "  +  myDerivedClass.firstName);

        Console.WriteLine("Calling  myDerivedClass.DisplayfirstName()");
        myDerivedClass.DisplayfirstName();

    }

}