Based-class constructor called when creating instances of a derived class

Posted on by Nan

In C# OOP, the keyword base can be used to access members of the base class from within a derived class. Regarding the constructor, the keyword base can specify the base-class constructor called when creating instances of a derived class.

Example

We are making a Chess game and we need to define the chess piece for the players.

public enum Player 
{
    Black,
    White
}

public class ChessPiece //base class
{
    //Properties
    public Player Player { get; set; }
    public char Symbol { get; set; }
    //Constructor
    public ChessPiece(char symbol, Player player)
    {
        Player = player;
        Symbol = symbol;
    }
}

The code above is the base class and the following code is a derived class. 

public class King: ChessPiece 
{ 
  public King(Player player) : base('K', player) {}
}

Class King is a derived class from ChessPiece class. We use keyword base to access the constructor in class King.

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