🧾 ASP.NET Core Invoice Generator with PDF Export & SQLite

A clean, modern, and production-ready ASP.NET Core MVC web application for generating professional invoices. This solution supports itemized billing, tax/discount/shipping modifiers, currency conversion, and exporting beautiful PDF invoices using one of 3 elegant built-in templates.

✨ Key Features

• 🧾 Invoice creation with sender & recipient details
• 📦 Add multiple items with quantity and rate
• 🏷️ Apply tax, discount, and shipping (percentage or fixed)
• 💱 Multi-currency support (USD, EUR, KES)
• 🌐 Global settings for default values, terms, and logo
• 🖨️ Export invoices to PDF with built-in templates
• 🎨 3 elegant PDF templates (Default, Modern, Simple)
• 💾 Built on lightweight SQLite – no SQL Server needed
• ⚙️ Built with .NET 6, Razor Pages, Entity Framework Core
• 🧩 Clean MVC structure and modular codebase

🖨️ PDF Invoice Templates

• Default – Traditional layout with sections
• Modern – Sleek, bold heading with minimal spacing
• Simple – Clean, lightweight layout

Each template can be customized or extended.

🧩 Technologies Used

• ASP.NET Core MVC (Razor Pages)
• Entity Framework Core with SQLite
• iTextSharp for PDF generation
• Bootstrap for responsive UI

📸 Preview Highlights

• Invoice creation UI
• PDF preview (all 3 templates)
• Global settings panel
• Currency and item management

📃 What You Get

• Complete source code (ASP.NET Core MVC Project)
• Preconfigured SQLite database
• 3 PDF export templates
• README.md + Setup Instructions
• requirements.txt (NuGet packages)

📧 Support

Need help or want customization? Contact the author.

• Client & sender invoice info
• Item management (name, rate, quantity)
• Invoice creation with:
  • Tax, discount, shipping (percentage or fixed)
  • Payment terms, due dates, notes
  • Currency selection (USD, KES, EUR)
• Export PDF with custom logo & template (3 designs)
• Global default settings for consistent invoices
• Currency conversion service
• SQLite database - no external DB setup required
• Fully documented and organized codebase
• MVC architecture with Entity Framework Core

• .NET 6 SDK
• Visual Studio 2022+ or VS Code
• No SQL Server needed (SQLite used)

• Open `Invoice Generator.sln` in Visual Studio 2022 or later.
• Check the connection string in `appsettings.json`
• Create Database (Using Package Manager Console)
• Run the App