📋 Invoice Management

Invoice Management is a professional .NET Framework Windows Forms application designed to streamline invoice creation, management, and user handling. Built for small businesses or personal use, it offers an intuitive interface for data entry and user administration.

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🚀 Overview

This project provides a robust solution for managing invoices, including features for adding, viewing, and editing invoice details, along with user authentication and management capabilities.

📊 Database Diagram

Below is a visual representation of the database schema:

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✨ Features

• 📝 Invoice Creation: Easily create and edit invoices with a user-friendly interface.
• 👤 User Management: Add, view, and manage users with secure access.
• 🔒 Authentication: Simple login system to protect sensitive data.
• 💾 Data Persistence: Stores data locally (requires setup with a database like SQL Server).
• 🎨 Modern UI: Clean and responsive design using Windows Forms.

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🛠️ Technologies Used

• Language: C# (.NET Framework)
• Framework: Windows Forms
• Database: SQL Server (configurable)
• IDE: Visual Studio

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📋 Prerequisites

Before running the project, make sure you have the following installed:

• Windows OS with .NET Framework 4.5 or higher.
• Visual Studio (Community Edition recommended).
• SQL Server (e.g., SQL Server Express).
• Git for version control and cloning the repository.

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🚀 Getting Started

Installation

1. Clone the repository:

   git clone https://github.com/KhalilAmamri/InvoiceManagement.git
   cd InvoiceManagement

2. Open the project in Visual Studio.
3. Configure the database connection in connect_db.cs if needed.
4. Build and run the solution.

Database Setup

1. Install SQL Server (e.g., SQL Server Express) and SQL Server Management Studio (SSMS).
2. Open SSMS and connect to your SQL Server instance (e.g., .\SQLEXPRESS).
3. Run the SQL script to create the database and tables:

   sqlcmd -S .\SQLEXPRESS -i Database/database.sql

   Or open Database/database.sql in SSMS and click Execute.
4. Update the connection string in connect_db.cs:

   string connectionString = "Data Source=.\\SQLEXPRESS;Initial Catalog=DB_GestionFacture;Integrated Security=True";

Note: Adjust file paths in the script (.mdf and .ldf) if needed to match your SQL Server data directory.

Running the Application

1. Open main.cs or the startup form in Visual Studio.
2. Press F5 to build and run the project.

## 📂 Project Structure
InvoiceManagement/
├── Database/
│ └── database.sql # SQL script to create the database and tables
├── images/
│ └── database_diagram.png # Database schema diagram
├── FormGestionFactures.cs # Invoice management form
├── FormGestionFactures.Designer.cs
├── FormGestionFactures.resx
├── FormLogin.cs # Login form
├── FormLogin.Designer.cs
├── FormLogin.resx
├── connect_db.cs # Database connection logic
├── main.cs # Application entry point
├── .gitignore # Git ignore file
└── README.md # This file

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🤝 Contributing

We welcome contributions! To contribute:

1. Fork the repository.
2. Create a feature branch:

   git checkout -b feature/new-feature

3. Commit your changes:

   git commit -m "Add new feature"

4. Push to the branch:

   git push origin feature/new-feature

5. Open a Pull Request.

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📄 License

This project is licensed under the MIT License. See the LICENSE file for details.

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👤 Author

• Khalil Amamri
• GitHub: KhalilAmamri

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🙌 Acknowledgments

• Inspired by .NET Framework community resources.
• Thanks to all contributors and users!