Refer

This library aims to manage references to fields or properties nested in other structures, similar in its idea to the ref keyword. Unlike with the ref keyword the wrapped property or field can be dynamically reassigned to a different base object, so the binding is not to a place in memory, but to a path pointing inside a data structure, which is itself similar to the concept of lenses.

Example

using Refer;
using static System.Console;

public class Bar
{
    public int X { get; set; }
}
public class Foo
{
    public Bar B { get; } = new Bar();
}

public class Program
{
    public static void Main()
    {
        var foo = new Foo()
        {
            B = {
                X = 5,
            },
        };

        var reference = foo.Bind(f => f.B.X);
        WriteLine(reference); // 5

        float value = reference; // Implicitly converts to its underlying type,
                                 // in this case int, which initializes the float value
        WriteLine(value == 5); // True

        reference.Value = 7;
        WriteLine(foo.B.X); // 7
    }
}