ASP.NET Core  

Building an Inventory & Order Management System in ASP.NET Core - Part 2

🌟 Introduction

In Part 1, we laid the foundation of our Inventory & Order Management System. We set up the project, configured SQL Server, and implemented core modules like Products, Categories, Suppliers, and Customers. By the end, you had a working system capable of handling basic inventory operations.

But inventory management doesn’t stop at CRUD. Businesses need to process orders, secure access, and generate reports to make informed decisions. That’s exactly what we’ll tackle in Part 2 — turning our basic system into a production-ready application.

🔑 Step 1: Order Processing

Orders connect customers to products and automatically reduce stock. This ensures your system reflects real-time inventory changes.

public void PlaceOrder(int productId, int customerId, int quantity)
{
    var product = _context.Products.Find(productId);

    if (product.Quantity >= quantity)
    {
        product.Quantity -= quantity;

        _context.Orders.Add(new Order
        {
            ProductId = productId,
            CustomerId = customerId,
            Quantity = quantity,
            OrderDate = DateTime.Now
        });

        _context.SaveChanges();
    }
    else
    {
        throw new Exception("Insufficient stock!");
    }
}

This logic prevents overselling and keeps stock levels accurate.

🔐 Step 2: Authentication & Roles

In Part 1, anyone could access the system. Now we’ll secure it with ASP.NET Core Identity.

Roles

  • Admin Role → Full access (manage products, suppliers, customers, orders).

  • Staff Role → Limited access (view products, place orders).

[Authorize(Roles = "Admin")]
public IActionResult ManageProducts()
{
    ...
}

This ensures sensitive operations are only performed by authorized users.

📊 Step 3: Reporting & Analytics

Reports transform raw data into insights. For example, a Low Stock Report helps you restock before products run out.

var lowStock = _context.Products
    .Where(p => p.Quantity < 10)
    .ToList();

Export Options

  • Excel → ClosedXML

  • PDF → iTextSharp

This makes the system useful not just for operations, but also for business strategy.

🌐 Step 4: Deployment

Finally, let’s make the system production-ready:

  • Configure production DB in appsettings.json.

  • Deploy to Azure App Service or IIS.

  • Run migrations before launch:

dotnet ef database update

🎯 Conclusion

By combining Part 1 and Part 2, you now have a complete Inventory & Order Management System:

  • Products, Categories, Suppliers, Customers

  • Order Processing with stock updates

  • Authentication & Role-based security

  • Reporting & Deployment

This project is not just a tutorial — it’s a portfolio-ready application that demonstrates your ability to build enterprise-grade systems in ASP.NET Core.

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