CODEWITHSUNDEEP
c#properties
K. Georgiev
K. Georgiev

Reputation: 93

Can the get of a property be abstract and the set be virtual?

I have a base class like this:

public class Trajectory{
    public int Count { get; set; }
    public double Initial { get; set { Count = 1; } }
    public double Current { get; set { Count ++ ; } }
}

So, I have code in the base class, which makes the set-s virtual, but the get-s must stay abstract. So I need something like this:

...
public double Initial { abstract get; virtual set { Count = 1; } }
...

But this code gives an error. The whole point is to implement the counter functionality in the base class instead in all the derived classes. So, how can I make the get and set of a property with different modifiers?

Upvotes: 8

Views: 4658

Answers (3)

abatishchev
abatishchev

Reputation: 100288

No, you can't. At least I haven't found a solution.

If property is marked as abstract then neither it's getter and setter can have bodies.

Upvotes: 0

Hans Passant
Hans Passant

Reputation: 941635

Make it neither abstract nor virtual. And make the backing field private. That way, a derived class cannot override it nor can it mess with it.

Upvotes: 1

max
max

Reputation: 34417

split it into 2 functions:

public double Initial
{
    get { return GetInitial(); }
    set { SetInitial(value); }
}

protected virtual void SetInitial(double value)
{
    Count = 1;
}

protected abstract double GetInitial();

Upvotes: 11

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