csharp

Guide professional C# and .NET development with naming, null-safety, async, LINQ, DI, and testing conventions.

Updated Jan 24, 2026
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npx skills add https://github.com/lunarmoon26/star-digital-employee --skill csharp-lunarmoon26
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Skill: csharp
Source: https://github.com/lunarmoon26/star-digital-employee/tree/main/plugins/developer/skills/csharp
Command: npx skills add https://github.com/lunarmoon26/star-digital-employee --skill csharp-lunarmoon26

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This skill provides best-practice guidance for professional C# and .NET development, helping teams write clean, maintainable, and efficient code.

Core Features & Use Cases

  • Naming conventions: Apply .NET naming rules, I-prefix for interfaces, Async suffix for async methods, and PascalCase for public types.
  • Nullable reference types and null-safety: Enable Nullable, annotate references, and pattern-match nulls to reduce runtime errors.
  • Async/await and LINQ patterns: Design APIs that use async flows, minimize allocations, and write expressive queries.
  • Patterns and types: Use records for value objects, pattern matching, and DI-friendly architecture.
  • Documentation and testing: Enforce XML docs, unit tests, and analyzers for consistent quality.

Quick Start

Provide a small C# service class that follows DI, async/await, nullable reference types, XML documentation, and a simple unit-test friendly design.

Frequently Asked Questions about csharp

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

FAQPage Schema
What are the standard C# naming conventions for professional .NET development?

Standard C# naming conventions require PascalCase for public types and methods, an I-prefix for interfaces, and an Async suffix for asynchronous methods. Following these .NET rules ensures codebase consistency and clean architecture across team projects.

How do I enable nullable reference types in C# for null-safety?

To enable nullable reference types for null-safety in C#, turn on the Nullable feature in your project, annotate reference types appropriately, and use pattern matching to handle nulls. This proactive approach significantly reduces runtime NullReferenceException errors.

What is the best way to design async APIs in C# to minimize allocations?

The best way to design async APIs in C# is utilizing async/await patterns to manage asynchronous flows efficiently while minimizing memory allocations. Designing APIs this way ensures responsive .NET applications and expressive, maintainable code.

How do I use records and dependency injection for maintainable C# code?

Use records to define immutable value objects and apply dependency injection for a DI-friendly architecture in C#. Combining records with DI and pattern matching produces highly maintainable, testable, and reliable .NET codebases.

Do I need XML documentation and unit tests for professional C# development?

Yes, professional C# development requires enforcing XML documentation for public APIs and writing unit tests to guarantee consistent quality. Applying analyzers alongside XML docs and unit tests ensures your codebase remains clean and reliable.