Init + private set accessors on the same property?

Question

Is it possible to use a public init accessor and a private setter on the same property?

Currently I get error CS1007 "Property accessor already defined".

public record Stuff
{
    public int MyProperty { get; init; private set; } // Error

    public void SetMyProperty(int value) => MyProperty = value;
}

var stuff = new Stuff
{
    MyProperty = 3, // Using the init accessor
};

stuff.SetMyProperty(4); // Using the private setter (indirectly)

My best guess would be to use a private member variable, a property for that variable with get and init accessors (not auto-implemented) and the setter member function. Can it be done more easily?

Answer 1

Similar to specifying a constructor to initialize your value, you can use a private backing field so that you can still take advantage of the init logic and allow initialization without a specific constructor

public record Stuff
{
    private int _myProperty;

    public int MyProperty { get => _myProperty; init => _myProperty = value; }

    public void SetMyProperty(int value) => _myProperty = value;
}

var stuff = new Stuff
{
    MyProperty = 3 // Using the init accessor
};

stuff.SetMyProperty(4); // Using the private setter (indirectly)