Disallowing only get or set method for property

[kkohno]

Is there ways to disable access to get or set method of property only?

I need in strong sandboxing by interfaces and not any more.
For example some interface can include only get method, but implementation can contains also set method.

// the interface for sandbox
public interface IIndexedService
{
    int this[int index] { get; }
}

// the implementation
public sealed class IndexedService : IIndexedService
{
    List<int> _list = new List<int> { 100, 200, 300, 400, 500 };

    public int this[int index]
    {
        get => _list[index];
        set => _list[index] = value; // need to be ignored
    }
}

I use approach below, but it can ignore only whole property including get and set.

options.SetTypeResolver(new TypeResolver {
    MemberFilter = resolver.FilterMember
});

[Zaitonn]

does making the setter of indexer internal or private or protected work in classes?

interface IExample
{
    int this[int index] { get; }
}

class Example : IExample
{
    public int this[int index]
    {
        get => 114514;
        internal set => Console.WriteLine(value);
    }
}

[kkohno]

yes, it works, but it can be a vulnerability if the implementation is not carefully done, or if there is already some library whose source codes are not available. The interface can also be implemented by a programmer from another department, and no one will look inside its code - the system must ensure security without delving into someone else's implementation