upgrade function app from asp.net 6 to asp.net 8.

Question

hello team, i need to upgrade the azure function service from asp.net 6 to 8. i have updated the target framework to .net 8 and updated nugget packages as well. can you please help me to see if any additional changes required to upgrade the .net version so see if no issues with it.

Answer 1

@ANKIT GHENGE ,

Welcome to Microsoft Q&A Platform!

 To upgrade your Azure Function app from ASP.NET 6 to ASP.NET 8, make sure you do these updates:

1. Update the Target Framework: Set your project file's TargetFramework to net8.0 which you already did.
2. Update the SDK Version: If you're using a global.json file, bump the version property to the installed .NET 8.0 SDK version.
3. Update Application Settings: For the in-process model, set these app settings in your Azure Function app:
   • FUNCTIONS_WORKER_RUNTIME to "dotnet".
   • FUNCTIONS_EXTENSION_VERSION to "~4".
   • FUNCTIONS_INPROC_NET8_ENABLED to "1".
4. Check Package References: Update any Microsoft.AspNetCore., Microsoft.EntityFrameworkCore., and Microsoft.Extensions. package references to version 8.0 or later.
5. Update Stack Configuration: Make sure the stack configuration in Azure points to .NET 8.
6. Configuration Changes:
   • Verify the compatibility of any custom middleware or third-party libraries with .NET 8.
   • Update configuration files (e.g., appsettings.json) if there are new settings or changes required by .NET 8.

After these changes, test your function app to ensure everything's working fine.

References:

• Migrate from ASP.NET Core in .NET 7 to .NET 8
• Migrate apps from Azure Functions version 1.x to version 4.x (programming-language-csharp) 
• Migrate .NET apps from the in-process model to the isolated worker model

Hope this helps. Do let us know if you have any further queries.

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