1 Excel

#region 设置页边距
//sheet.SetMargin(MarginType.LeftMargin, (double)0.6 / 3);
//sheet.SetMargin(MarginType.RightMargin, (double)0.6 / 3);
//sheet.SetMargin(MarginType.BottomMargin, (double)0.6 / 3);
//sheet.SetMargin(MarginType.TopMargin, (double)0.6 / 3);
//sheet.FitToPage = true; 
#endregion

            NPOI.SS.UserModel.ISheet sheet = null;
            sheet.PrintSetup.Landscape = true;  //Landscape是布尔类型的，在英语中是横向的意思
            sheet.FitToPage = false;    //是否自适应界面
            sheet.PrintSetup.Scale = 100;   //缩放设置 PrintSetup.Scale应该被设置为0-100之间的值，而不是小数
            sheet.IsPrintGridlines = true;  //打印是否带网格线
            sheet.PrintSetup.PaperSize = 9;     //A4 210 x 297 mm

            sheet.SetMargin(NPOI.SS.UserModel.MarginType.RightMargin, (double)0.3);
            sheet.SetMargin(NPOI.SS.UserModel.MarginType.TopMargin, (double)0.6);
            sheet.SetMargin(NPOI.SS.UserModel.MarginType.LeftMargin, (double)0.3);
            sheet.SetMargin(NPOI.SS.UserModel.MarginType.BottomMargin, (double)0.6);