http://github.com/ClosedXML/ClosedXML http://github.com/ClosedXML/ClosedXML is a wrapper around OpenXML and attempts to fill that gap. It has partial support of

http://github.com/ClosedXML/ClosedXML http://github.com/ClosedXML/ClosedXML is a wrapper around OpenXML and attempts to fill that gap. It has partial support of Excel formula evaluation. Disclaimer: I'm a current ClosedXML contributor.