Angelo Kostroulis Books

Visual C# .Net: A Guide For Vb6 Developers

By Angelo Kastroulis, James Still, Marco Bellinaso, Brad Maiani, Cristian Darie, Angelo Kostroulis, Angelo Kastroulis, Brad Maiani, Marco Bellinaso, James Still, Cristian Darie

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.NET is the most exciting Microsoft release for many years. As companies turn their attention to the .NET Framework, developers need to transfer their skills as quickly as possible. This book will...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.