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Discovered a NuGet package called ClosedXML. Takes away the pain of dealing with OpenXML

As title says, it's a great package that simplifies dealing with Excel files.

It's open-source: https://github.com/ClosedXML/ClosedXML

I created a sample CLI to create a spreadsheet to track daily electricity costs for demo purposes: https://github.com/Dev-Power/programmatically-manage-excel-spreadsheets-with-dotnet/tree/main

You can also find the accompanying blog post for more details: https://devpower.co.uk/dotnet/csharp/programmatically-manage-excel-spreadsheets-with-dotnet/

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