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Upgrading Xamarin Forms to .NET MAUI

Mitchel Sellers

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With Xamarin identifying iOS 16 as its final supported version, upgrading to .NET MAUI is no longer optional. This post walks through the full migration process from pre-work through the Upgrade Assistant, manual steps, and the optional move to single-project structure.

What you’ll learn

  • Pre-migration prep: upgrading to Xamarin.Forms 5.0 first, cleaning up unused code and build warnings
  • How to run the Upgrade Assistant once per project (MobileProject, Android, and iOS)
  • The manual migration steps Microsoft provides that the tool doesn’t fully handle
  • How to switch to the single-project structure for easier image, font, and resource management
  • Common issues: Visual Studio auto-adding files to .csproj, font registration, and when to clean and restart

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