CODEWITHSUNDEEP
c#.netinheritance
Timigen
Timigen

Reputation: 1025

Get only the properties of the superclass from subclass

I have a class that contains some properties, and a class that inherits from that class that adds some additional properties. Unfortunately I can only get the inherited class from a data service. But I only need the properties on the superclass. How can this be accomplished?

I have the following classes:

namespace MA.ECCA.WebServices
{
    public class Player
    {
        Public Player();

        public string fname{get; set;}
        public string lname{get; set;}
    }

    public class PlayerData : Player
    {
        public PlayerData();

        public Stats stats {get; set;}

    }
}

Given an object of type PlayerData how could I get an object with only the Player properties?

I have tried the following:

Player player = GetPlayerStats();//returns object of type PlayerStats populated with data

and...

Player player = (Player)GetPlayerStats();

In both cases I end up with all the data, I only want an object that contains the fname and lname...

Upvotes: 0

Views: 512

Answers (1)

Martin Mulder
Martin Mulder

Reputation: 12954

As I understand correctly, the method GetPlayerStats always returns an object of type PlayerData. And I understand this cannot be changed and you want to receive less data (no statistics, only the first and last name).

The object of a certain type always stay the same; it will always maintain the same members. It will not suddenly get smaller. Casting it up to a Player or even an object will make some/all properties less visibility, but they are still inside that object.

In your case you should create a totally new instance of type Player and copy the data from the first object to the new one. For example:

public class Player
{
    public Player();
    public Player(Player original)
    {
        fname = original.fname;
        lname = original.lname;
    }

    public string fname{get; set;}
    public string lname{get; set;}
}
...
PlayerData playerData = GetPlayerStats();
Player player = new Player(playerData);

If you do this often, you might consider creating a generic method and use reflection to copy properties from the first object to the next.

Upvotes: 2

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