skills.rest
wshaddix
wshaddixCOMMUNITY
Explore all skills by this author →
Website𝕏@wshaddixGitHub

dotnet-multi-targeting

Guide .NET multi-targeting with polyfills, conditional compilation, and .csproj configuration.

71|10|Updated Feb 11, 2026
Search Tags:#csharp#.net#polyfill#tfm#multi-targeting#api compatibility
One-click install
npx skills add https://github.com/wshaddix/dotnet-skills --skill dotnet-multi-targeting-wshaddix
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: dotnet-multi-targeting
Source: https://github.com/wshaddix/dotnet-skills/tree/main/skills/dotnet-multi-targeting
Command: npx skills add https://github.com/wshaddix/dotnet-skills --skill dotnet-multi-targeting-wshaddix

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps developers navigate the complexities of targeting multiple .NET Target Framework Monikers (TFMs) and using newer C# language features on older .NET versions.

Core Features & Use Cases

  • Polyfill Strategies: Guides on using PolySharp for language features and SimonCropp/Polyfill for BCL APIs.
  • Conditional Compilation: Explains when and how to use #if directives for runtime or platform differences.
  • Project Configuration: Demonstrates .csproj patterns for multi-targeting, conditional references, and TFM-specific files.
  • API Validation: Details on using EnablePackageValidation and the ApiCompat tool to ensure API consistency across TFMs.
  • Use Case: Ensure your .NET library works seamlessly on both .NET 8 and .NET 10, leveraging the latest C# features without breaking compatibility for older runtimes.

Quick Start

Use the dotnet-multi-targeting skill to understand how to configure a .NET project to target both net8.0 and net10.0.

Frequently Asked Questions about dotnet-multi-targeting

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

FAQPage Schema
What is the best way to configure a .csproj file for multi-targeting different .NET TFMs?▼

Configure multi-targeting in your .csproj file by defining multiple Target Framework Monikers (TFMs). This Skill provides .csproj configuration patterns for targeting multiple frameworks, including conditional references and TFM-specific file inclusions.

How do I validate API compatibility across multiple .NET target frameworks?▼

Validate API compatibility across .NET TFMs using the EnablePackageValidation property and the ApiCompat tool. This ensures consistent public API surfaces across different target framework monikers during the build process.

When should I use #if conditional compilation directives in a multi-targeting .NET project?▼

Use #if conditional compilation directives when you need to handle runtime or platform differences across TFMs. This Skill explains exactly when and how to apply conditional compilation effectively alongside polyfill strategies.

Can I ensure a .NET library works seamlessly on both .NET 8 and .NET 10?▼

Yes, you can ensure a .NET library works on both .NET 8 and .NET 10 by combining multi-targeting strategies. This involves configuring .csproj patterns for both TFMs, using polyfills for newer features, and validating API consistency.

Related Skills

Explore More Software Engineering Skills→
rudironsonirudironsoni

dotnet-version-detection

Detect TFM and .NET SDK version from .csproj, Directory.Build.props, and global.json.

Community
Intermediate
wshaddixwshaddix
71

dotnet-version-upgrade

Guide .NET project upgrades to newer Target Framework Monikers with checklists.

Community
Intermediate
rjmurillorjmurillo
24

moq-analyzers-failure-archaeology

Analyze historical Moq Analyzers issues, root causes, and solutions.

Community
Advanced
lukacflukacf
19

meerkat-wasm

Build, bundle, and run Rust crates as wasm32 modules with the Meerkat embedded runtime.

Community
Intermediate