Upgrading from MvvmCross 5 to 6.4.2 involves several key changes and potential pitfalls. Here are some detailed considerations to help navigate this process:
1. .NET Standard Upgrade**
MvvmCross 6 requires your application to use .NET Standard 2.0 as its base library. This means you need to upgrade your project to .NET Standard 2.0 before proceeding with the MvvmCross upgrade. This change is crucial for compatibility with the newer version of MvvmCross[1].2. IoC Changes**
- Namespace Changes: All IoC-related code has been moved from `MvvmCross.Platform.IoC` to `MvvmCross.IoC`. This means you'll need to update your using statements and any references to IoC classes.- Container Name Change: `MvxSimpleIoCContainer` is now named `MvxIoCContainer`. You should update any instances or references to this container in your code[1].
3. Logging System Changes**
- Removal of `MvxTrace`: The `MvxTrace` class and related logging functionality have been removed in MvvmCross 6. You will need to adopt the new logging system, which is documented in the official MvvmCross documentation.- Namespace Changes: The logging namespace has changed from `MvvmCross.Platform.Logging` to `MvvmCross.Logging`, and `MvvmCross.Core.Platform.LogProviders` is now `MvvmCross.Platforms.Logging.LogProviders`. Update your code to reflect these changes[1].
4. Compatibility and Dependencies**
Ensure that all your project dependencies are compatible with MvvmCross 6.4.2. This includes checking the versions of Xamarin.Forms if you're using it, as well as other MvvmCross plugins like Messenger or Visibility[2][6].5. Testing and Debugging**
After upgrading, thoroughly test your application to ensure that all features and functionalities work as expected. Pay particular attention to areas that have undergone significant changes, such as IoC and logging.6. Documentation and Community Support**
Read the official documentation and any release notes carefully. If you encounter issues, consider contributing to the MvvmCross community by opening pull requests or seeking help from forums and discussion groups[1].By carefully addressing these areas, you can minimize potential pitfalls and ensure a smoother transition from MvvmCross 5 to 6.4.2.
Citations:[1] https://www.mvvmcross.com/documentation/upgrading/upgrade-to-mvvmcross-60
[2] https://www.nuget.org/packages/MvvmCross/6.4.2
[3] https://www.reddit.com/r/dotnetMAUI/comments/130uath/porting_xamarin_native_to_maui/
[4] https://stackoverflow.com/questions/68214000/mvvmcross-upgrade-from-6-4-2-to-8-0-1
[5] https://www.reddit.com/r/fortinet/comments/18rp90o/dont_upgrade_to_fortios_742_on_fortigate/
[6] https://www.nuget.org/packages/MvvmCross.Forms/6.4.2
[7] https://github.com/MvvmCross/MvvmCross/issues/3937
[8] https://stackoverflow.com/questions/73128508/how-to-load-plugins-when-updating-to-mvvmcross-6-4-2-from-5-6-2