When migrating a .NET Core application to .NET 8, it's crucial to be aware of potential breaking changes that might require code adjustments. Here's an overview of some key breaking changes to consider
Some APIs marked as obsolete in previous versions are removed in .NET 8. Consult the official documentation for a complete list https://learn.microsoft.com/en-us/dotnet/core/compatibility/8.0
Before you begin:
- Back up your existing codebase: Always create a backup of your project before making any significant changes.
- Review breaking changes: Refer to the official documentation for .NET 8 to check for any breaking changes that might impact your application.
Steps:
1. Update the .NET SDK version:
- Open your project in Visual Studio or any other compatible IDE.
- Go to Tools > NuGet Package Manager > Package Manager Console.
- Run the following command to update the global.json file with the latest .NET 8 SDK version:
dotnet tool install --global sdk
2. Update the target framework:
- Right-click on your project in the Solution Explorer and select Properties.
- Navigate to the Application tab.
- In the Target framework dropdown, select .NET 8.0. Click OK to apply the changes.
3. Update package references:
- Right-click on your project in the Solution Explorer and select Manage NuGet Packages.
- Search for "Microsoft.NET.Sdk.Web" and check the box next to the appropriate version for .NET 8.0.
- Review other project dependencies and update any incompatible packages using the same process.
- Click Install to update the selected packages.
4. Review code changes:
- Breaking changes: Refer to the documentation and address any breaking changes identified in step 1.
Additional considerations:
If you are using any third-party libraries or frameworks, ensure they are compatible with .NET 8.
Review configuration files like appsettings.json for any potential breaking changes or updates required for .NET 8.
Consider using the dotnet upgrade assistant tool to automate some parts of the migration process.
