It looks at the binary level of your app, extracts all the APIs that are called, and then lists which APIs aren't available on your target framework (.NET 7 in this case). NET Portability Analyzer tool to surface APIs used that aren't present on. NET is similar but not identical, you must check which APIs are available on. This is great for when you're using an old package that isn't going to be updated and you can just retarget to work on. Don't forget to test it extensively because it can cause run-time errors if the external package calls an API that isn't available on. What happens if you don't find a compatible version? What if you just don't want to update the version of a package because of these breaking changes? Don't worry because it's possible to depend on. However, you should consider that updating the package version can introduce some breaking changes that would force you to update your code. So, updating packages to newer versions is generally a good recommendation. NET, but you might find newer versions that do support it. Maybe the project is referencing older package versions that don't support. To check the package compatibility, you can use the tool that offers a more detailed information about versions and dependencies. The following image shows the dependencies for the Castle.Windsor package: NET Standard dependencies, then it's going to work on. You can explore the dependencies of each NuGet package your application is using on. Once you've migrated the package references, you must check each reference for compatibility. Verify every dependency compatibility in. Or, you can let Visual Studio do the work for you: right-click on the nfig file and select the Migrate nfig to PackageReference option. You can do the update manually, taking the dependencies contained in the nfig file and migrating them to the project file with the PackageReference format. So, you need to transition from one format to another. Instead, use the PackageReference property inside the project file to specify the NuGet packages for your app. NET, there's no longer the need to use the nfig file. NET Framework application, all references to external packages are declared in the nfig file. So, don't forget to run the application and test that everything works as expected. Run and test: There might be differences that don't show up until run time. If needed, update third-party packages to the ones that support. NET addressing API-level differences between. Create a new project file with this format or update the one you have to use the SDK style.įix code and build: Build the code in. NET projects use the new SDK-style project format. In this step, you take the current project into a state that simplifies the startup point for the migration. Preparation: Understand the dependencies the project has to have an idea of what's ahead. The migration process consists of four sequential steps: When the Upgrade Assistant is unable to migrate your application, you'll learn the underlying mechanics so that you might be able to migrate manually. In this chapter, we'll look at what is happening behind the scenes and how to port your application by hand. Using it is easy and there are step-by-step instructions available on the. The Upgrade Assistant is a migration tool. But the good news is that there's a tool that will do all the work for you in most cases. NET Framework and other platforms that were built on top of. NET Framework is a more complicated process because there are more differences between. In the future when new versions become available, you can upgrade in the same way. You're done! Your app now runs on the latest version of. Under Application > General > Target framework, choose. If this is the case, then in Visual Studio, simply right-click on your project in Solution Explorer and choose Properties. Updating your applications to target the latest version of. Additionally, we'll cover the most common issues and challenges you can face when migrating an existing application from. If your application has special cases or complicated dependencies, we'll also show how to do the whole migration process by hand. We'll introduce a tool that can do all the work for you in most cases. In this chapter, we'll show how to migrate your applications to the latest version of.
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