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csharp

Routes C# tasks to sub-skills covering modern coding standards and MSTest unit testing.

3|Updated Aug 8, 2026
Search Tags:#csharp#unit testing#coding standards#dotnet#pattern matching#async await#mstest
One-click install
npx skills add https://github.com/Jose-Polanco-Oxte/Echos-Live-Music-Visualizer --skill csharp-jose-polanco-oxte
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: csharp
Source: https://github.com/Jose-Polanco-Oxte/Echos-Live-Music-Visualizer/tree/main/.agents/skills/csharp
Command: npx skills add https://github.com/Jose-Polanco-Oxte/Echos-Live-Music-Visualizer --skill csharp-jose-polanco-oxte

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? When working on C#/.NET code, it is hard to know which conventions and testing practices to apply for a given task. This Skill acts as a router that directs the agent to the right sub-skill—modern C# coding standards or MSTest unit testing—so only the relevant guidance is loaded. ## Core Features & Use Cases - Sub-skill routing: Lists available sub-skills under sub-skills/ and explains when to load each one, keeping context usage minimal. - Modern C# Coding Standards: Covers records, readonly record struct value objects, pattern matching, nullable reference types, async/await with CancellationToken, Span<T>/Memory<T>, API design, and Result-type error handling. - MSTest Best Practices: Covers MSTest 3.x/4.x assertions, data-driven tests with DataRow/DynamicData, TestContext, lifecycle, parallelization, and conditional execution. - Use Case: When asked to refactor a C# service class, load the modern-csharp-coding-standards sub-skill; when asked to add unit tests, load the csharp-mstest sub-skill instead. ## Quick Start Ask the agent to write or refactor C# code or MSTest unit tests, and it will load the matching sub-skill for the task.

Frequently Asked Questions about csharp

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

FAQPage Schema
How do I write modern C# code with records and pattern matching?▼

Use record types for immutable DTOs and domain entities, readonly record struct for value objects, and switch expressions with property and relational patterns for branching logic. The modern-csharp-coding-standards sub-skill provides detailed examples of each pattern.

How do I write data-driven unit tests with MSTest?▼

Use [DataRow] attributes for inline test cases or [DynamicData] with IEnumerable of ValueTuple or TestDataRow for type-safe test data. The csharp-mstest sub-skill covers MSTest 3.x/4.x assertions, lifecycle, and TestContext usage.

When should I use Span<T> versus Memory<T> in C#?▼

Use Span<T> for synchronous, zero-allocation operations on buffers, and Memory<T> when data must cross await boundaries in async methods. Use ArrayPool<T> for large temporary buffers to reduce GC pressure.

Should I use exceptions or a Result type for error handling in C#?▼

Use a Result<TValue, TError> type for expected errors like validation failures and business rule violations, and reserve exceptions for unexpected failures such as network errors or programming bugs. The coding standards sub-skill includes a full Result type implementation.

Does this skill cover test parallelization and flaky test retries in MSTest?▼

Yes, the csharp-mstest sub-skill covers assembly-level parallelization with [Parallelize], [DoNotParallelize] for sequential classes, [Retry] for flaky tests in MSTest 3.9+, and OS/CI conditional execution attributes.

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