.NET Core Application Upgrade Version 6.0 to 8.0

Question

Configuration Changes. Application Code changes. What additional Libray should we install.

Tuhin Paul · Answer

Upgrading a .NET Core application from version 6.0 to 8.0 involves several steps including configuration changes application code updates and potentially installing additional libraries. Update the Target Framework Open your .csproj file and update the TargetFramework property to net8.0 . net8.0 Update SDK Version Update the SDK version in your global.json file (if you have one) to use the .NET 8 SDK. { sdk: { version: 8.0.100 } } Update Dockerfile (if applicable) If you're using Docker update the base image to use the .NET 8 runtime or SDK. FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build Application Code Changes Breaking Changes Review the .NET 8 Breaking Changes documentation to identify any changes that might affect your application. Common areas to check: ASP.NET Core : Changes in middleware routing or dependency injection. EF Core : Changes in database providers or query behavior. Serialization : Changes in System.Text.Json or Newtonsoft.Json . Update NuGet Packages Update all NuGet packages to their latest versions compatible with .NET 8. Use the following command to update all packages in your solution: dotnet list package --outdated dotnet add package --version Update ASP.NET Core Middleware If you're using ASP.NET Core ensure your middleware and routing configurations are compatible with .NET 8. For example if you're using UseEndpoints  ensure it aligns with the latest routing conventions. Update EF Core Code If you're using Entity Framework Core update your DbContext and migrations to be compatible with EF Core 8. Run the following commands to update your database: dotnet ef migrations add UpdateToNet8 dotnet ef database update