Articles filed in category 'Legacy code'

An Introduction to Distributed Tracing with OpenTelemetry in .NET 7

By: Joydip Kanjilal

Last updated: Wednesday, January 8, 2025

Published in: CODE Magazine: 2023 - January/February

OpenTelemetry is an open-source distributed tracing framework. Companies that use it can make more informed decisions about their operations. Learn to use it through an example ASP.NET 7 project.

• .NET 7
• .NET Core
• .NET Core Tools
• Architecture
• Legacy code
• Testing
• Testing and Quality Control

Migrating Monolithic Apps to Multi-Platform Product Lines with .NET 5

By: Alexander Pirker

Last updated: Friday, January 31, 2025

Published in: CODE Magazine: 2021 - March/April

Learn to migrate older applications to .NET 5. Learn to use "ports-and-adapters" (hexogonal architecture) along with design patterns and principles from domain-driven design (DDD) to help you modify your old software so you can split the business logic into independent assemblies.

• .NET 5
• .NET Core
• Architecture
• Development Process
• Legacy code

Docker

By: Ted Neward

Last updated: Wednesday, October 8, 2025

Published in: CODE Magazine: 2018 - May/June

Ted Neward’s Docker article introduces the technology’s rise to mainstream relevance and demystifies how it works for developers, especially those from the Windows ecosystem. It covers installing and running Docker, the distinction between images and containers, and how Dockerfiles express reproducible environments. Neward explains practical usage—volume mounting, port mapping, and building/publishing images—while comparing Docker’s philosophy to traditional virtualization (Hyper-V/VirtualBox) and highlighting its suitability for repeatable deployments and microservices. He also touches on orchestration (Kubernetes, Swarm) and the CI/CD value of Dockerfiles as delivery artifacts.

• Agile Development
• Change Management
• Containers
• Continuous Integration
• Docker
• Legacy code
• Open Source

Prepare Visual Basic for Conversion to C#

By: Paul Sheriff

Last updated: Friday, April 8, 2022

Published in: CODE Magazine: 2018 - May/June

There’s nothing wrong with coding in VB, but to stay contemporary, you need to get coding in C#. Paul shows you how to convert legacy VB files to C# without re-inventing the wheel.

• C#
• Legacy code
• Visual Basic
• Visual Basic 6 (and older)

Software Archaeology

By: Chris Williams

Last updated: Tuesday, May 11, 2021

Published in: CODE Magazine: 2017 - November/December

If you’ve ever had to step through legacy code—even your own—you understand what a mystery some of it can be. Chris provides some tips and tricks for figuring it out.

• Editorials
• Legacy code
• Testing
• Testing and Quality Control