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Found 12 Skills
Use when lINQ query and method syntax, deferred execution, and performance optimization. Use when querying collections in C#.
Linqs integration. Manage Persons, Organizations, Deals, Leads, Activities, Notes and more. Use when the user wants to interact with Linqs data.
Expert-level C# development with .NET 8+, ASP.NET Core, LINQ, async/await, and enterprise patterns
C# 12 language features including records, pattern matching, nullable reference types, LINQ, async/await, and modern language patterns. USE WHEN: user mentions "C#", "C# records", "pattern matching", "LINQ", "async/await", "nullable reference types", "C# generics", "C# language features" DO NOT USE FOR: TypeScript - use `typescript`, Java - use Java skills, F# or VB.NET specific features
UdonSharp (C# to Udon Assembly) scripting skill for VRChat world development. Use this skill when writing, reviewing, or debugging UdonSharp C# code. Covers compile constraints (List<T>/async/await/try/catch/LINQ blocked), network sync (UdonSynced, RequestSerialization, FieldChangeCallback, NetworkCallable), persistence (PlayerData/PlayerObject), Dynamics (PhysBones, Contacts), Web Loading, and event handling. SDK 3.7.1 - 3.10.2 coverage. Triggers on: UdonSharp, Udon, VRC SDK, UdonBehaviour, UdonSynced, NetworkCallable, VRCPlayerApi, SendCustomEvent, PlayerData, PhysBones, synced variables, VRChat world scripting, C# to Udon.
Migrate a .NET 9 project or solution to .NET 10 and resolve all breaking changes. USE FOR: upgrading TargetFramework from net9.0 to net10.0, fixing build errors after updating the .NET 10 SDK, resolving source and behavioral changes in .NET 10 / C# 14 / ASP.NET Core 10 / EF Core 10, updating Dockerfiles for Debian-to-Ubuntu base images, resolving obsoletion warnings (SYSLIB0058-SYSLIB0062), adapting to SDK/NuGet changes (NU1510, PrunePackageReference), migrating System.Linq.Async to built-in AsyncEnumerable, fixing OpenApi v2 API changes, cryptography renames, and C# 14 compiler changes (field keyword, extension keyword, span overloads). DO NOT USE FOR: .NET Framework migrations, upgrading from .NET 8 or earlier (use migrate-dotnet8-to-dotnet9 first), greenfield .NET 10 projects, or cosmetic modernization. LOADS REFERENCES: csharp-compiler, core-libraries, sdk-msbuild (always); aspnet-core, efcore, cryptography, extensions-hosting, serialization-networking, winforms-wpf, containers-interop (selective).
Review .NET (C#/F#) code for language and runtime conventions: async/await, nullable, API versioning, IDisposable, LINQ, and testability. Language-only atomic skill; output is a findings list.
Baseline C# skill loaded for every .NET code path. Guides language patterns (records, pattern matching, primary constructors, C# 8-15), coding standards, async/await, DI, LINQ, serialization, domain modeling, concurrency, Roslyn analyzers, globalization, native interop (P/Invoke, LibraryImport, ComWrappers), WASM interop (JSImport/JSExport), and type design. Spans 25 topics. Do not use for ASP.NET endpoint architecture, UI framework patterns, or CI/CD guidance.
Scans .NET code for ~50 performance anti-patterns across async, memory, strings, collections, LINQ, regex, serialization, and I/O with tiered severity classification. Use when analyzing .NET code for optimization opportunities, reviewing hot paths, or auditing allocation-heavy patterns.
Core VB.NET patterns, type safety, modern language features
Optimize Entity Framework Core queries by fixing N+1 problems, choosing correct tracking modes, using compiled queries, and avoiding common performance traps. Use when EF Core queries are slow, generating excessive SQL, or causing high database load.
C# and .NET development patterns