QNESoftware 

Custom data annotations, attributes, and converters for QNE applications. Provides validation attributes, type converters, and annotation utilities.

Entity classes and domain models for QNE applications. Contains all database entity definitions and domain objects.

Common API response classes and controller extensions for ASP.NET Core API projects. Provides standardized API response models and helpful controller extension methods.

Data transfer objects (DTOs), view models, filter models, and report models for QNE applications. Provides data models for API communication and reporting.

Core interfaces, repositories, services, and utilities for QNE applications. Provides foundational abstractions and implementations for data access and business logic.

Business logic calculators and helpers for QNE applications. Provides calculation engines for financial transactions, taxes, discounts, and other business operations.