Laboratory Management System (Design Patterns Project)

Overview

The Laboratory Management System is a C# console-based application that simulates the core operations of a medical laboratory.
It allows adding and managing lab tests, changing their states, displaying results, and simulating payment operations.

This project was developed to demonstrate the practical implementation of multiple Object-Oriented Design Patterns,
showing how clean software architecture improves flexibility, scalability, and maintainability.

Features

• Add new laboratory tests
• View all available tests
• Change test status
• Display test results
• Simulate different payment methods

Applied Design Patterns

State Pattern : Manages test status transitions. Proxy Pattern : Controls access to sensitive features such as payment and results. Singleton Pattern : Ensures only one instance of main classes. Iterator Pattern : Iterates through the collection of lab tests in a clean and consistent way. Strategy Pattern : Provides multiple payment strategies.

Tech Stack

• Language: C#
• Framework: .NET (Console Application)
• Paradigm: Object-Oriented Programming (OOP)
• Design Principles: SOLID, GoF Design Patterns