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Dot-Net-Tiered-Architecture
A comprehensive contacts management system built with C# following a clean 3-tier architecture pattern. This project demonstrates enterprise-level software design principles with clear separation of concerns across presentation, business logic, and data access layers
#ado-net#clean-architecture#csharp#data-access-layer#data-business-layer#database
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README preview
Contacts Management System
A production-ready contact management system implementing clean 3-tier architecture with C# and SQL Server.
Architecture
┌─────────────────────────────────────────────┐
│ ConsoleApp-PresentationLayer │ ← User Interface
├─────────────────────────────────────────────┤
│ ContactsBusinessLayer │ ← Business Logic
├─────────────────────────────────────────────┤
│ ContactsDataAccessLayer │ ← Data Persistence
└─────────────────────────────────────────────┘
Project Structure
contacts-management-system/
├── ConsoleApp-PresentationLayer/
│ ├── Program.cs
├── ContactsBusinessLayer/
│ ├── Contacts.cs
├── ContactsDataAccessLayer/
│ ├── ContactsDataAccess.cs
│ ├── Dataacces_Helper.cs
└── README.md
Features
- Clean Architecture: Strict separation of concerns
- SOLID Principles: Maintainable and extensible codebase
- Database Integration: Full CRUD operations with SQL Server
- Error Handling: Comprehensive exception management
- Scalable Design: Easy to extend and modify
Tech Stack
| Layer | Technology |
|---|---|
| Presentation | C# Console Application |
| Business | C# Class Library |
| Data Access | ADO.NET + SQL Server |
| Development | Visual Studio 2022 |
Quick Start
# Clone the repository
git clone https://github.com/aboubakr-jelloulat/Dot-Net-Tiered-Architecture.git
# Open in Visual Studio
cd contacts-management-system
start ContactsManagementSystem.sln
# Build and run
dotnet build
dotnet run --project ConsoleApp-PresentationLayer