This article provides sample code to set page options of Excel worksheets programmatically using C# API and .NET Library. You will be able to set Page Orientation, Scaling Factor, FitToPages Options, Paper Size, Print Quality, First Page Number....) PaperISOB4 B4 (ISO) 250 × 353 mm PaperJapanesePostcar...× 235 mm PaperISOB5Extra B5 (ISO) Extra 201 × 276 mm PaperA2 A2...