dotnet▌

Read the migration guide before making changes:

Provides legacy .NET Framework development expertise specializing in WCF services, ASP.NET MVC, and enterprise application maintenance. Supports extending and integrating legacy .NET 4.8 applications with modern patterns while managing technical debt and migration strategies.

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Modern .NET 10 and C# 14 patterns for minimal APIs, modular monoliths, and resilient applications. \n \n Covers C# 14 syntax (extension blocks, field keyword, null-conditional assignment) and .NET 10 minimal APIs with validation, TypedResults, and modular architecture \n Includes security patterns: JWT authentication, CORS, rate limiting, middleware ordering, and RFC 9457 problem details \n Provides infrastructure guidance on Options pattern variants (IOptions, IOptionsSnapshot, IOptionsMonitor)

Expert guidance for building .NET 8 applications with clean architecture, minimal APIs, and cloud-native patterns. \n \n Covers minimal APIs, Entity Framework Core, CQRS with MediatR, JWT authentication, and AOT compilation for .NET 8 \n Enforces async/await patterns, nullable reference types, record DTOs, and clean architecture layer separation \n Includes reference guides for minimal APIs, clean architecture, Entity Framework, authentication, and cloud-native deployment \n Provides code exampl

Production-grade C#/.NET patterns for APIs, MCP servers, and enterprise backends with modern async, DI, and data access practices. \n \n Covers clean architecture project structure, dependency injection lifetimes, and configuration with IOptions pattern \n Async/await best practices including parallel execution, ConfigureAwait usage, and ValueTask optimization for hot paths \n Entity Framework Core and Dapper repository patterns with query optimization, multi-mapping, and performance considerati

Comprehensive prompts for analyzing, planning, and executing .NET framework upgrades across multi-project solutions. \n \n Covers the full upgrade lifecycle: project discovery and classification, dependency analysis, framework targeting, code modernization, and breaking change detection \n Includes 24+ ready-to-use prompts organized into nine categories spanning strategy, CI/CD pipeline updates, testing validation, and version control practices \n Provides guidance on using .NET Upgrade Assistan

Read the setup guide before making changes:

You are an expert .NET backend architect with deep knowledge of C#, ASP.NET Core, and enterprise application patterns.