是否违反开放封闭原则

Question

我有一个异常处理代码，我认为它违反了开放/封闭原则。由于从system.exception派生的这些异常，我无法找到一种方法来应用Open闭合原则，如经典的Shape示例（http://joelabrahamsson.com/a-simple-example-of-the-openclosed-principle/）

请你帮我解释一下这个代码块的重构

        switch (exception)
        {
            case DuplicateNameException _:
                returnMessage = DefaultResponseMessages.RecordExistsError;
                break;
            case KeyNotFoundException _:
                returnMessage = DefaultResponseMessages.NotFoundError;
                break;
            case ArgumentException _:
                returnMessage = DefaultResponseMessages.ArgumentExceptionError;
                break;
            case AuthenticationException _:
                returnMessage = DefaultResponseMessages.LoginError;
                detailMessage = string.Empty;
                break;
            case UnauthorizedAccessException _:
                returnMessage = DefaultResponseMessages.UnauthorizedAccessError;
                detailMessage = string.Empty;
                break;
        }

这是另一种方法;

    public static HttpStatusCode ExceptionToStatusCode(this Exception exception)
    {
        switch (exception)
        {
            case KeyNotFoundException _:
                return HttpStatusCode.NotFound;
            case DuplicateNameException _:
                return HttpStatusCode.BadRequest;
            case ArgumentException _:
                return HttpStatusCode.BadRequest;
            case UnauthorizedAccessException _:
                return HttpStatusCode.Unauthorized;
            default:
                return HttpStatusCode.InternalServerError;
        }
    }