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Found 33 Skills
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).
Guidelines for .NET backend development with C#, ASP.NET Core, and Entity Framework Core
Implements real-time WebSocket communication using SignalR for action notifications and register events. Use when: Adding real-time notifications, creating hub endpoints, broadcasting to groups, or testing WebSocket communication.
Instrument a webapp to send useful telemetry data to Azure App Insights
Versions HTTP APIs. Asp.Versioning.Http/Mvc, URL segment, header, query string, sunset.
Implement the Syncfusion ASP.NET Core Image Editor (EJ2) component. Use this when adding image editing to an ASP.NET Core application, including cropping, rotating, annotations, fine-tuning (brightness, contrast, blur), and filter application. Covers opening/saving images, toolbar customization, redaction, resizing, and image editor event handling with ejs-imageeditor.
Use when building C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps. Invoke for Entity Framework Core, minimal APIs, async patterns, CQRS with MediatR.
Expert .NET backend architect specializing in C#, ASP.NET Core, Entity Framework, Dapper, and enterprise application patterns. Masters async/await, dependency injection, caching strategies, and performance optimization. Use PROACTIVELY for .NET API development, code review, or architecture decisions.
Generates .NET Clean Architecture backend structure from entity definitions
Microsoft 365 Agents SDK for .NET. Build multichannel agents for Teams/M365/Copilot Studio with ASP.NET Core hosting, AgentApplication routing, and MSAL-based auth.
Implements Syncfusion ASP.NET Core TreeGrid for hierarchical data with sorting, filtering, editing, exporting, paging, virtual scrolling, and advanced features. Supports configuration, CRUD, aggregates, templates, state persistence, and performance optimization in ASP.NET Core applications.
Implement the Syncfusion ASP.NET Core DropDownTree component to bind hierarchical and self-referential data, enable checkbox selection, customize templates, implement keyboard accessibility, and handle tree interactions when building multi-level dropdown selections.