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[WIP] Upgrade the project to .NET9, do not forget to upgrade the dependencies like dotnet-ef versions and documentation (README.md) as well
Upgrade project to .NET 9 with updated dependencies and documentation
Sep 6, 2025
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@copilot change the dotnet versions in CI (github workflows) as well |
Co-authored-by: Loupeznik <43666286+Loupeznik@users.noreply.github.com>
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Upgrade project to .NET 9 with updated dependencies and documentation
Upgrade project to .NET 9 with updated dependencies, documentation, and CI/CD
Sep 6, 2025
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This PR upgrades the ToDo App Template from .NET 8 to .NET 9, bringing the project up to the latest stable version of the .NET ecosystem.
Changes Made
Framework Upgrade
net9.0instead ofnet8.0mcr.microsoft.com/dotnet/aspnet:9.0-alpineandmcr.microsoft.com/dotnet/sdk:9.0)dotnet-version: 9.0.x)Package Updates
Entity Framework Core: Upgraded from 8.0.x to 9.0.8
Microsoft.EntityFrameworkCore→ 9.0.8Microsoft.EntityFrameworkCore.Design→ 9.0.8Npgsql.EntityFrameworkCore.PostgreSQL→ 9.0.4EFCore.NamingConventions→ 9.0.0Microsoft Extensions: Updated all Microsoft.Extensions packages from 8.0.0 to 9.0.8
Other Dependencies:
MediatR: 12.2.0 → 13.0.0Fluid.ViewEngine: 2.5.0 → 2.25.0FastEndpointspackages: 5.21.2 → 5.30.0 (maintained API compatibility)Documentation & Tooling
dotnet-eftool compatibility with .NET 9 (version 9.0.8)Bug Fixes
DZarsky.ToDoAppTemplate.Domain.csprojthat was causing build warningsVerification
✅ All projects build successfully without errors
✅ Entity Framework migrations and database commands work correctly
✅ Application starts and runs (database connection failures are expected without PostgreSQL)
✅ Docker build configuration updated and compatible
✅ GitHub workflow updated to use .NET 9 for CI builds
✅ All package dependencies resolve correctly
Compatibility Notes
The upgrade maintains full backward compatibility. There are 2 minor deprecation warnings in the FastEndpoints library, but these don't affect functionality. The FastEndpoints version was kept at 5.30.0 to avoid breaking API changes that would require code modifications.
This upgrade brings improved performance, security updates, and access to the latest .NET 9 features while maintaining the existing codebase structure.
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