Why VSTO 3.0?

VSTO is a simple, but powerful framework for Office solution development. The framework brings an amazing number of benefits to the hands of every Office developer—form controls, classes, granular security, server scalability, object-oriented features, integrity, easy deployment, and many others.

Safer managed code extensions

VSTO allows managed and unmanaged code to be seamlessly put together into the same .NET assembly. This allows the developers to retain unmanaged code that cannot be ported over to the .NET framework without completely re-writing it. The Microsoft Office document or workbook with a linked or referenced managed code assembly is said to have managed code extensions. Managed extensions can be created by using VSTO ...

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