15.0.0.0: Microsoft.office.interop.excel Version

try

// Clean up workbook.Close(false); excelApp.Quit(); microsoft.office.interop.excel version 15.0.0.0

1. Overview Microsoft.Office.Interop.Excel is a primary interop assembly (PIA) provided by Microsoft to allow .NET applications (C#, VB.NET, F#) to communicate with Microsoft Excel through COM (Component Object Model). Version 15.0.0.0 corresponds to Microsoft Office 2013 . try // Clean up workbook

// Save file string savePath = @"C:\Reports\SalesReport.xlsx"; workbook.SaveAs(savePath, Excel.XlFileFormat.xlOpenXMLWorkbook); try // Clean up workbook.Close(false)

Console.WriteLine("Error: " + ex.Message);

This assembly acts as a managed wrapper around Excel’s unmanaged COM interfaces, enabling developers to create, read, modify, and automate Excel workbooks programmatically without directly dealing with COM pointers, VARIANT types, or memory management complexities.

Excel.Application excelApp = null; Excel.Workbook workbook = null; Excel.Worksheet worksheet = null;