moai-lang-csharp

Build C# 13 backend applications with .NET 9 and ASP.NET Core.

Updated Dec 2, 2025
One-click install
npx skills add https://github.com/dolsoon/my-awesome-project --skill moai-lang-csharp-dolsoon
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: moai-lang-csharp
Source: https://github.com/dolsoon/my-awesome-project/tree/main/.claude/skills/moai-lang-csharp
Command: npx skills add https://github.com/dolsoon/my-awesome-project --skill moai-lang-csharp-dolsoon

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill empowers developers to build scalable, high-performance enterprise applications with C# 13 and .NET 9. It provides expert guidance on modern language features, frameworks like ASP.NET Core and Entity Framework Core, and best practices, reducing the learning curve and ensuring robust backend services.

Core Features & Use Cases

  • C# 13 with Async/Await: Master modern asynchronous programming patterns for responsive and efficient applications.
  • LINQ & Entity Framework Core 9: Efficiently query and manage databases with powerful language-integrated queries and a robust ORM.
  • ASP.NET Core 9: Build high-performance web APIs and applications using the latest features and dependency injection patterns.
  • Use Case: When building a new backend service, this skill guides you through implementing efficient async APIs with EF Core for database access and ASP.NET Core for web endpoints, ensuring your service is performant and maintainable.

Quick Start

Show a basic C# 13 async/await example for fetching user data from an API.

Frequently Asked Questions about moai-lang-csharp

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

FAQPage Schema
How do I build async/await APIs with C# 13 and ASP.NET Core 9?

Async/await in C# 13 enables non-blocking, responsive APIs by using async methods and the await keyword. ASP.NET Core 9 integrates seamlessly with these patterns to handle concurrent requests efficiently without blocking threads, improving throughput and responsiveness for enterprise applications.

What's the best way to query databases with Entity Framework Core 9 and LINQ?

LINQ provides language-integrated queries that map directly to Entity Framework Core 9 operations, allowing you to write type-safe database queries in C#. EF Core 9 translates these queries to SQL, handling migrations, relationships, and lazy loading while maintaining performance and maintainability.

Can I use dependency injection and middleware patterns in ASP.NET Core 9?

Yes, ASP.NET Core 9 has built-in dependency injection and middleware pipelines. DI manages service lifecycles and reduces coupling; middleware intercepts requests and responses for cross-cutting concerns like logging, authentication, and error handling—both essential for scalable enterprise backends.

How do I unit test C# backend services with xUnit and Moq?

xUnit provides a testing framework for C# with test organization and assertions, while Moq allows you to create mock objects for isolating components. Together they enable writing fast, reliable unit tests that verify business logic without external dependencies like databases or APIs.

Does .NET 9 support modern C# 13 language features for enterprise applications?

.NET 9 fully supports C# 13 features including records, pattern matching, nullable reference types, and async enhancements. These features reduce boilerplate, improve type safety, and enable cleaner, more maintainable code for building scalable enterprise-grade backend services.

When should I use Entity Framework Core migrations instead of manual SQL scripts?

EF Core migrations track database schema changes in code, version them with your application, and apply them consistently across environments. Use migrations for managed, repeatable deployments that stay synchronized with your C# data models and reduce manual SQL error risk.