Скачать или смотреть Resolving the System.MissingMethodException in Xamarin.Forms CarouselView

Discover how to fix the `System.MissingMethodException` when using the CarouselView class in Xamarin.Forms. Learn the importance of updating your project references for smooth operation.
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This video is based on the question https://stackoverflow.com/q/62266728/ asked by the user 'Asia Piazza' ( https://stackoverflow.com/u/12828450/ ) and on the answer https://stackoverflow.com/a/62278881/ provided by the user 'Asia Piazza' ( https://stackoverflow.com/u/12828450/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the System.MissingMethodException in Xamarin.Forms CarouselView

If you're diving into Xamarin.Forms to create engaging mobile applications, you might encounter some common pitfalls along the way. One of these is the dreaded System.MissingMethodException, particularly when working with the CarouselView class. This guide will guide you through understanding this exception and how to fix it.

The Problem: A Hidden Exception

While working on a slider using the CarouselView class, many developers run into the following exception:

[[See Video to Reveal this Text or Code Snippet]]

The above error indicates that the method or property you are trying to use is not available in the version of Xamarin.Forms that your project is currently referencing. If you've already set the IndicatorView as an experimental feature using the line:

[[See Video to Reveal this Text or Code Snippet]]

You might be led to believe that everything is in order. However, there may still be underlying issues that need addressing.

Code Review

Here's the relevant part of the code that sets up the CarouselView:

[[See Video to Reveal this Text or Code Snippet]]

The Solution: Updating Your Project References

The root cause of the System.MissingMethodException you're facing is often linked to an outdated reference in the project. In this specific case, the solution came by simply updating the Xamarin.Forms package in the Android project.

Steps to Resolve the Exception

Check Xamarin.Forms Version: Ensure that all projects within your solution, especially your Android project, are using the latest stable version of Xamarin.Forms. In your scenario, you are using version 4.6.0.847, which might not be compatible with the features you are trying to implement.

Update the Package:

Open your solution in Visual Studio.

Navigate to the NuGet Package Manager.

Check for updates for the Xamarin.Forms package.

Install the latest version across all projects to maintain compatibility.

Rebuild the Solution: After updating, always remember to clean and rebuild your solution. This step ensures that all outdated references are removed and the project compiles with the correct settings.

Final Thoughts

Ensuring that all parts of your Xamarin application are using compatible versions of libraries and dependencies cannot be overstated. Keeping your packages up to date not only resolves issues like the System.MissingMethodException but also allows you to take advantage of the latest features, improvements, and bug fixes.

Dive into your Xamarin project today, apply these changes and watch your CarouselView finally work without a hitch! Happy coding!