.NET MAUI is great for building cross-platform apps. But can you migrate an existing Windows application built in a weakly typed language to .NET MAUI? And is it possible to test the new application with both unit testing and UI testing during the migration process? And of course how can I handle the deployment to the local machines after the application is finished? For a customer I took on this experiment and in this talk I will reflect on the lessons learned. I can not show the real application due to legal limitations, but I will show the problems I faced in a simulated look-alike environment.

Key Topics Covered:
• Migrating legacy code to .NET MAUI
• Using only a Windows target for .NET MAUI
• Using GitHub Copilot for migrating between languages
• Automated testing of the application code
• Using CI/CD in Azure DevOps during the migration
• Deploying the application to the end users

Prerequisites: Familiarity with MAUI and C# unit testing

Format: Presentation and live coding

Takeaways:
• Migrate legacy code to .NET MAUI and make this testable
• Using GitHub Copilot to migrate code from a weakly typed language to C#
• Using unit testing and UI testing for .NET MAUI apps.
• Deploy the application to users
• Using Azure DevOps for CI/CD pipelines for a .NET MAUI application