<div>
<div class="content wysiwyg-content">
Hi. &nbsp;I need to develop a C# Excel add-in for multiple versions of Excel: Excel 2003, Excel 2007, and Excel 2010. &nbsp;Do I need to change the referenced version of the Microsoft Office Object Library--11.0, 12.0, and 14.0--, recompile, and create a different installer for each version of Excel? &nbsp;Hopefully, there is an easier way? &nbsp;Thank you.
</div>
</div>


Hi.  I need to develop a C# Excel add-in for multiple versions of Excel: Excel 2003, Excel 2007, and Excel 2010.  Do I need to change the referenced version of the Microsoft Office Object Library--11.0, 12.0, and 14.0--, recompile, and create a different installer for each version of Excel?  Hopefully, there is an easier way?  Thank you.

Microsoft Office Object Libraries for Multiple Versions of Excel

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.

Microsoft Excel

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.