I’ve got a very old project that I can’t upgrade from Visual Studio 2010. I need to add in a feature to read data from an Excel (XLSX) File. I see a lot of recommendations for CLosedXML but the only way I see to install this is using nuget package manager which is not available for 2010 (as far as I can see). Is there another way to install this?

I’m converting some VBA into C# with closedXML. Also teaching me to learn it as I go along. It was all going sweet up until now.

I’m trying to add comments to specific cells in an Excel file using the ClosedXML library (version 0.102.2) in my C# project. However, when I open the generated Excel file, I encounter the following error:

I am creating a dropdown in closedxml using c# by doing the following:

I want to convert my var in a cell to an int, I know it is an int because I know that this column in my .xlsx file is full of int, but Convert.ToInt32() makes an error;