VSTO-review

To review VSTO add-in code for COM object lifecycle issues, audit COM release patterns like the two-dot rule and Release/FinalRelease usage, check event handler hygiene, and validate thread safety for Office interop calls to prevent memory leaks.

VSTO Excel add-ins often crash or hang due to thread-safety violations during Office interop calls or unmanaged COM resource leaks. Reviewing your code for proper event handler cleanup and correct COM object release usage identifies these root causes.

The two-dot rule in VSTO development is a COM lifecycle management guideline preventing memory leaks. It advises against chaining multiple property accesses, which creates hidden COM objects that cannot be explicitly released, leading to resource leaks and stability bugs.

Yes, static analysis can check event hygiene and thread safety in VB.NET Office add-ins by evaluating pasted interop code. It validates event handler detachment, verifies COM release patterns, and identifies unsafe cross-thread Office API calls.

A thorough VSTO code audit requires contextual details including the target Office version, .NET framework target, add-in type, and a reproduction snippet or minimal project. This context ensures accurate evaluation of API correctness and version compatibility.

To handle exceptions in an Outlook VSTO add-in, implement robust exception handling with proper logging and recovery notes. A code review evaluates your catch blocks to ensure safe COM object cleanup during errors without leaving dangling event handlers.