I haven't done this in a while and didn't do it much, but can you use ADO to access the Excel file?

Learn how to use the ClosedXML NuGet package to export data as a CSV or XLSX file for Excel from an ASP.NET Core application. When building web applications, you will often need to import or export ...

Your business's software developers can work with Microsoft's .NET framework to create powerful Excel macros for your spreadsheets. The .NET framework contains a vast library of classes that perform a ...

Learn the benefits of Data Transfer Objects, why they should be immutable, and how to take advantage of them in your ASP.NET Core applications A Data Transfer Object (commonly known as a DTO) is ...