Cannot implement property with protected set from interface-CodePudding

I have an interface which has a property with public get and protected set.

Yet when I implement this in my class i get an error saying it must be public.

My interface looks like this:

public interface ISegment
{
    INode NodeA { get; protected set; }
    INode NodeB { get; protected set; }
    public sealed void SetNodeA(INode node) => NodeA = node;
    public sealed void SetNodeB(INode node) => NodeB = node;
}

My class Segment : ISegment has the properties declared like this:

[SerializeField]
protected Node _nodeA;
public INode NodeA
{
    get => _nodeA;
    protected set => _nodeA = value as Node;
}

[SerializeField]
protected Node _nodeB;
public INode NodeB
{
    get => _nodeB;
    protected set => _nodeB = value as Node;
}

And i get this error:

'Segment' does not implement interface member 'ISegment.NodeA.set'
'Segment' does not implement interface member 'ISegment.NodeB.set'

What am i misunderstanding here?

CodePudding user response：

Do it like this

    public interface ISegment
    {
        INode NodeA { get; protected set; }
        INode NodeB { get; protected set; }
        public sealed void SetNodeA(INode node) => NodeA = node;
        public sealed void SetNodeB(INode node) => NodeB = node;
    }

    public class MyClass : ISegment
    {
        private Node _nodeA;
        private Node _nodeB;

        INode ISegment.NodeA
        {
            get => _nodeA;
            set => _nodeA = value as Node;
        }

        INode ISegment.NodeB
        {
            get => _nodeB;
            set => _nodeB = value as Node;
        }

        private void Do(INode node)
        {
            if(node == NodeA) { } // Error
            if(node == _nodeA) { } // Warning "Possibly unintended reference comparison"
            if (node == ((ISegment)this).NodeA) { } // OK
        }
    }

but the Question is, why do you want that? Why protected set?

You can do it like this also. (Not helps here because of default implementation in the interface)


    public interface IFoo
    {
        public string Bar { get; }
    }

    public class Bubu : IFoo
    {
        public string Bar { get; protected set; }
    }

Update: Edited the code to show more exactly, how to access the properties