NPOI 字体

 ICellStyle style = workbook.CreateCellStyle();
                        style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                        style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                        style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
                        style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                        IFont font = workbook.CreateFont();
                        font.FontHeightInPoints = 12;
                        //font.Boldweight = (short)NPOI.SS.UserModel.FontBoldWeight.Bold;
                        font.FontName = "宋体";
                        style.SetFont(font);//HEAD 样式