New Post: Is there anyway to get worksheet name by index instead of alphabate?

ExcelQueryFactory is part of LinqToExcel.
If you are using LinqToExcel you should ask your question over there.

This package ClosedXML is a totally different package

Here is how you would do it in ClosedXML.

                // Open the Excel file and get first worksheet
                XLWorkbook wb = new XLWorkbook(fileLocation);
                IXLWorksheet ws = wb.Worksheet(1);