Hope the null conditional (?.) operator can check whether the target has overloaded != and == operators

[Misaka-Mikoto-Tech]

https://www.reddit.com/r/csharp/comments/8p5cab/null_conditional_operator_for_overloaded_and/

public class Test
{
    int x = 1;

    public static bool operator ==(Test lhs, Test rhs)
    {
        if(ReferenceEquals(lhs, rhs)) return true;
        if(ReferenceEquals(lhs, null) || ReferenceEquals(rhs, null)) return false;
        return lhs.x == rhs.x;
    }

    public static bool operator!=(Test lhs, Test rhs)
    {
        if (ReferenceEquals(lhs, rhs)) return false;
        if (ReferenceEquals(lhs, null) || ReferenceEquals(rhs, null)) return true;
        return lhs.x != rhs.x;
    }

    public void Show()
    {
        Console.WriteLine($"x={x}");
    }
}

public class Program
{
    static void Main(string[] args)
    {
        Test testA = new Test();

        bool val = testA != null;
        Console.WriteLine($"A != null: {val}");

        testA?.Show();
    }

}

Like the code above, for common sense, ?. operator should be a logical truncation operator, which should be equivalent to if(testA != null), but in fact it is equivalent to if(!Object.ReferenceEqual(testA , null)). Is this a design mistake?

[CyrusNajmabadi]

No. This is intentional. This is specifically about behavior when the value is exactly null, and thus could not be the receiver value for a method call.

[Misaka-Mikoto-Tech]

OK, thks