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Sets or returns orientation of the printed worksheet.

public PageOrientation Orientation{ get; set; }

Public Property Orientation() As PageOrientation

          //--- Get Orientation
          PageSetup.PageOrientation orientation = ps.Orientation

          //--- Set Orientation
          ps.Orientation = PageSetup.PageOrientation.Landscape;

          '--- Get Orientation
          Dim orientation As PageSetup.PageOrientation = ps.Orientation

          '--- Set Orientation
          ps.Orientation = PageSetup.PageOrientation.Landscape