ClosedXML

Employee Attendance System in .NET 10: Import Employees from Excel and Export the Report

25th October 2026 by Regie

Import employees from Excel: the preview of a file with four rows ready to import and four rows skipped, each with the reason

Add Excel to the Employee Attendance System. Import new employees from an .xlsx file with a preview that shows the problem of every row, and download the attendance report as a real .xlsx file. Built with ClosedXML and Claude Code, reviewed by hand.

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