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 ...

Comma-separated value (CSV) files are simplified versions of the type of spreadsheets you create with Excel and similar software. However, if you're trying to share data with people who use different ...

Excel's Save As command lets you save a single worksheet in the CSV (comma seperated value) format, but not an entire workbook. Saving individual sheets by hand is a tedious project for large ...