Исходник Простая работа с реестром через dynamic.

[oldORM]

using Microsoft.Win32;
using System.Dynamic;
using System.Runtime.Versioning;

namespace RegDynamic;

[SupportedOSPlatform("windows")]
public class RegistryDynamic : DynamicObject
{
    private readonly RegistryKey _registryKey;

    public RegistryDynamic(RegistryKey registryKey)
    {
        _registryKey = registryKey;
    }

    public override bool TryGetMember(GetMemberBinder binder, out object? result)
    {
        result = _registryKey.GetValue(binder?.Name, null);
        return result != null;
    }

    public override bool TrySetMember(SetMemberBinder binder, object? value)
    {
        _registryKey.SetValue(binder?.Name, value!);
        return true;
    }
}

[SupportedOSPlatform("windows")]
class Program
{
    static void Main(string[] args)
    {
        using var key = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\Qt\Qt Apps");
        dynamic registry = new RegistryDynamic(key!);
        Console.WriteLine(registry.uuid); // Получение значения.
        registry.uuid = "my value"; // Изменение значения
    }
}