EPPLUS打印参数

OfficeOpenXml.ExcelPackage expackage = new OfficeOpenXml.ExcelPackage();
OfficeOpenXml.ExcelWorkbook workbook = expackage.Workbook;
OfficeOpenXml.ExcelWorksheet worksheetfabric = workbook.Worksheets.Add("需求单");

//打印方向：横向
worksheetfabric.PrinterSettings.Orientation=eOrientation.Landscape;
//集中在一页里打印
worksheetfabric.PrinterSettings.FitToPage = true;
//使用A4纸
worksheetfabric.PrinterSettings.PaperSize = ePaperSize.A4;

EPPLUS打印参数

原文：http://www.cnblogs.com/echo99/p/5165319.html