ExcelFile.PrintFirstPageNumber Property
Page number that will be assigned to the first sheet when printing. (So it will show in page headers/footers). You might set this value to null to keep the page automatic. Also, the value returned here will be null it this value is not set (Set to Automatic)
Syntax
Namespace: FlexCel.Core
public abstract Nullable<Int32> PrintFirstPageNumber { get; set; }