ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Option Strict On moves late-binding and narrowing-conversion failures from runtime to compile time in VB.NET. See a worked interface example, interop trade-offs, and local verification steps.
VB.NET Late Binding and Option Strict Compiler Behavior When working with COM interop in VB.NET, developers must choose between Option Strict Off for runtime late binding and Option Strict On for compile‑time safety. Off allows late‑bound member access but risks runtime failures; On enforces type checks but can break existing code. This creates a concrete co
Visual Basic as a language does not implement authentication or credential expiration. Least-privilege enforcement and expired credential detection are provided by the .NET runtime, Windows security and application code, not by VB syntax. The documented language behavior relevant here is VB.NET's permissive type system and late binding, controlled by Option
COM Member Access and DispID Caching Visual Basic 6 utilizes a runtime cache for IDispatch identifiers (DispIDs) when performing late-bound calls to COM objects. This mechanism optimizes performance by storing the mapping between a member name and its numeric ID after the initial resolution. Consistency During Component Updates A challenge arises when the un
Ambiguous runtime behavior The Visual Basic language specification does not clearly define whether a late-bound member call on a Nothing reference should immediately raise a NullReferenceException or attempt COM dispatch first. This ambiguity produces different observable outcomes depending on the host environment — .NET Framework, .NET Core/5+, or VBA — and
visualbasic