If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Fixes Microsoft Excel appearance when custom Windows theme is used. When the custom dark Windows theme is used, sheets, graphics items, charts and everything that have an "Automatic color" are ...

💾 Download unstable CI build ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing ...

Discovery and Innovation through Science at Waterloo Training the Next Generation of Scientists Science at Waterloo is a global leader in research that pushes the boundaries of knowledge and ...