Programming Tutorials

  You have just completed a feature-rich WinUI 3 application using .NET 8. The application runs flawlessly in the Debug environment. The data binding is responsive, the navigation is smooth, and the third-party controls look great. Then, you publish the app for sideloading or the Microsoft Store. You launch the Release build, and it crashes instantly—or perhaps silently fails when navigating to a specific view. Checking the Windows Event Viewer ( Windows Logs > Application ), you find the generic and notoriously unhelpful error code:  0xc000027b  inside  KERNELBASE.dll . This post diagnoses the root cause of this specific crash in modern Windows App SDK development and provides a robust, granular solution to fix it without sacrificing build optimization. The Root Cause: The Conflict Between XAML and IL Trimming The  0xc000027b  error code is a generic "Store App" exception wrapper. In the context of WinUI 3 and .NET 8+, it almost universally points to an...

  The most significant barrier to migrating enterprise .NET Framework applications to .NET 8 (and consequently Linux containers) is the pervasive use of   System.Web.dll . For over a decade, developers treated  HttpContext.Current  as a global singleton, weaving it deep into business logic, logging frameworks, and helper classes. When you attempt to port this code to .NET Core/5+, the compiler fails immediately:  System.Web  does not exist. It was a Windows-specific, IIS-coupled assembly that has no place in the cross-platform, server-agnostic world of Kestrel. This post details the architectural pattern required to decouple these legacy dependencies using an abstraction layer that supports both the old ( System.Web ) and new ( Microsoft.AspNetCore.Http ) paradigms simultaneously. The Root Cause: Thread Static vs. AsyncLocal To fix the problem, you must understand why  HttpContext.Current  disappeared. In the legacy .NET Framework, IIS managed the...