Microsoft.office.interop.excel | Version 15.0.0.0

When you add a reference to Microsoft.Office.Interop.Excel in your .NET project, you are essentially importing a .NET wrapper that knows how to talk to the Excel.exe COM object. If you compile your code against version 15.0.0.0, your application carries a strong dependency on the type definitions present in the Office 2013 PIAs.

| Interop Assembly Version | Microsoft Office Version | Excel Executable | |--------------------------|--------------------------|------------------| | 8.0.0.0 | Office 97 | Excel 97 | | 9.0.0.0 | Office 2000 | Excel 2000 | | 10.0.0.0 | Office XP | Excel 2002 | | 11.0.0.0 | Office 2003 | Excel 2003 | | 12.0.0.0 | Office 2007 | Excel 2007 | | 14.0.0.0 | Office 2010 | Excel 2010 | | | Office 2013 | Excel 2013 | | 16.0.0.0 | Office 2016, 2019, 2021, Office 365 | Excel 2016+ | microsoft.office.interop.excel version 15.0.0.0

Microsoft.Office.Interop.Excel the Primary Interop Assembly (PIA) specifically designed for Microsoft Office 2013 When you add a reference to Microsoft