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falconnt
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migrating-dotnet

Migrate legacy .NET Framework apps to modern .NET with stepwise validation.

3|Updated Jan 22, 2026
Search Tags:#testing#migration#branching#dotnet#upgrade#sdk-style#net6-10
One-click install
npx skills add https://github.com/falconnt/windsurf-skills --skill migrating-dotnet
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: migrating-dotnet
Source: https://github.com/falconnt/windsurf-skills/tree/main/migrating-dotnet
Command: npx skills add https://github.com/falconnt/windsurf-skills --skill migrating-dotnet

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Upgrading legacy .NET Framework apps to modern .NET introduces risk and complexity. This Skill provides a structured, stepwise approach to perform safe migrations while preserving behavior and enabling modern tooling.

Core Features & Use Cases

  • Stepwise migration guidance: one focused change at a time to keep builds green.
  • Branching strategy and validation: create a dedicated migration branch, verify builds and tests after each step.
  • Prerequisites and configuration guidance: convert to SDK-style csproj, enable Central Package Management, migrate packages.config to PackageReference.
  • Use Case: upgrading a large solution from .NET Framework 4.x to .NET 6/8/10 with a phased, test-driven approach.

Quick Start

  • Create a migration branch for your solution.
  • Convert projects to SDK-style csproj and set up Central Package Management.
  • Migrate packages.config to PackageReference and verify the build and tests after each step.
  • Run the guided migration to move from .NET Framework to modern .NET versions in phases.

Frequently Asked Questions about migrating-dotnet

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I safely migrate legacy .NET Framework apps to modern .NET versions?▼

To migrate legacy .NET Framework apps safely, create a dedicated migration branch, convert projects to SDK-style csproj, enable central package management, and validate builds and tests after each stepwise change.

What is the best way to upgrade a large .NET solution from .NET Framework 4.x to .NET 8?▼

The best way to upgrade a large .NET solution is a phased, test-driven approach: migrate packages.config to PackageReference first, convert to SDK-style, then move to modern .NET versions while verifying tests continuously.

Can I migrate packages.config to PackageReference during a .NET upgrade?▼

Yes, you can migrate packages.config to PackageReference during a .NET upgrade. The migration process enables Central Package Management and requires verifying that your build and tests pass after completing this specific transition.

Do I need to convert to SDK-style csproj before upgrading to .NET 6 or .NET 10?▼

Yes, converting to SDK-style csproj is a prerequisite before upgrading to .NET 6 or .NET 10. It enables modern tooling and allows you to safely configure Central Package Management for the migration.

Why should I create a dedicated migration branch for .NET Framework upgrades?▼

You should create a dedicated migration branch for .NET Framework upgrades to isolate risk and preserve existing behavior. This branching strategy ensures builds stay green while you apply stepwise project modernization changes.

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