Editor's note
I pulled together a deliberately mixed issue: language updates, practical tooling, and a few hard-earned lessons from real systems. The DBNull casting trap and the 49.7-day Task.Delay bug are the kind of details that save you a long night, while the C# 14 pieces and MCP article show where the platform is headed.
C# 14, AI and .NET pitfalls
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Today's Articles
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Jasen's take on today's picks
“Object Cannot Be Cast from DBNull to Other Types” — The Hidden Null Trap in .NET 8 / 9
A classic DBNull bug that still bites seasoned .NET developers when database nulls meet newer runtime behavior.
Partial Constructors in C# 14 (.NET 10) - A Game-Changing Feature
Partial constructors are one of those language features that could genuinely change how source generators and large codebases are organized.
ASP.NET Development Services: Building Secure, Scalable, and High-Performance Web Applications
A practical look at using MCP from C# to wire .NET apps into AI workflows without inventing a bespoke protocol.
.NET Framework vs .NET Core — Key Differences Every Developer Should Know
This Copilot-assisted migration is interesting because it pairs modernization with CQRS-to-MediatR refactoring and tests.
Building AI-Ready Applications with Model Context Protocol in C#
Task.Delay’s 49.7-day limit is obscure, but it’s exactly the sort of edge case worth knowing before production teaches it to you.
Practical Experience: Migrating an Old .NET Project with GitHub Copilot Agent
Mark of the Web is a small Windows security detail with real consequences for downloaded binaries and developer workflows.












