ExcelFile.ShowGridHeadings Property
True is the column headings ("A", "B", etc) and row headings ("1", "2", etc) are shown. You can also set this option with SheetOptions by changing TSheetOptions.ShowRowAndColumnHeaders This property can work in different windows depending on the value of ActiveWindow
Syntax
Namespace: FlexCel.Core
public abstract Boolean ShowGridHeadings { get; set; }