Question

Possible Duplicate:
Properties vs Methods

I’m a beginner C# programmer and recently discovered how to use properties to expose members. However I’m confused on when to use a property as apposed to a method when returning something.

Should I do this:

public Vector2 Center {
    get {
        Vector2 screenDem = new Vector2(game.GraphicsDevice.Viewport.Width,
            game.GraphicsDevice.Viewport.Height);
        return new Vector2(screenDem.X / 2, screenDem.Y / 2);
    }
}

or should I do something like this:

public Vector2 GetScreenCenter() {
    Vector2 screenDem = new Vector2(game.GraphicsDevice.Viewport.Width,
            game.GraphicsDevice.Viewport.Height);
    return new Vector2(screenDem.X / 2, screenDem.Y / 2);
}

When should I use which and why?

Maybe I’m just thinking about this too hard and it doesn’t matter, I don’t know.

Thanks.

Answer 1

If you just want to get and set a value then a property is best.

public DateTime TheCurrentTime {get; set;}

If you need to pass parameters in order to modify or return something then a method is best.

public DateTime HowManyDaysUntilMyBirthday(Datetime MyBirthday) 
{
    return (MyBirthday - DateTime.Now());
}