IRow row = sheet.CreateRow(index);//index代表多少行
row.HeightInPoints = 35;//行高
ICell cell = row.CreateCell(0);//創(chuàng)建第一列
cell.SetCellValue(“設(shè)置單元格的值”);

　　3.設(shè)置單元格的樣式已經(jīng)字體大小，邊框，以及合并單元格

　　(1).創(chuàng)建單元格字體的樣式及大小

復(fù)制代碼代碼如下:

/// <summary>
        /// 獲取字體樣式
        /// </summary>
        /// <param name="hssfworkbook">Excel操作類</param>
        /// <param name="fontname">字體名</param>
        /// <param name="fontcolor">字體顏色</param>
        /// <param name="fontsize">字體大小</param>
        /// <returns></returns>
        public static IFont GetFontStyle(HSSFWorkbook hssfworkbook, string fontfamily, HSSFColor fontcolor, int fontsize)
        {
            IFont font1 = hssfworkbook.CreateFont();
            if (string.IsNullOrEmpty(fontfamily))
            {
                font1.FontName = fontfamily;
            }
            if (fontcolor != null)
            {
                font1.Color = fontcolor.GetIndex();
            }
            font1.IsItalic = true;
            font1.FontHeightInPoints = (short)fontsize;
            return font1;
        }

　　
　　(2).設(shè)置單元格內(nèi)顯示數(shù)據(jù)的格式

復(fù)制代碼代碼如下:

ICell cell = row.CreateCell(1);
ICellStyle cellStyleNum = Excel.GetICellStyle(book);
IDataFormat formatNum = book.CreateDataFormat();
cellStyleNum.DataFormat = formatNum.GetFormat("0.00E+00");//設(shè)置單元格的格式為科學(xué)計數(shù)法cell.CellStyle = cellStyleNum;

　　(3).創(chuàng)建單元格的邊框，背景顏色，以及對齊方式

復(fù)制代碼代碼如下:

/// <summary>
        /// 獲取單元格樣式
        /// </summary>
        /// <param name="hssfworkbook">Excel操作類</param>
        /// <param name="font">單元格字體</param>
        /// <param name="fillForegroundColor">圖案的顏色</param>
        /// <param name="fillPattern">圖案樣式</param>
        /// <param name="fillBackgroundColor">單元格背景</param>
        /// <param name="ha">垂直對齊方式</param>
        /// <param name="va">垂直對齊方式</param>
        /// <returns></returns>
        public static ICellStyle GetCellStyle(HSSFWorkbook hssfworkbook, IFont font, HSSFColor fillForegroundColor, FillPatternType fillPattern, HSSFColor fillBackgroundColor, HorizontalAlignment ha, VerticalAlignment va)
        {
            ICellStyle cellstyle = hssfworkbook.CreateCellStyle();
            cellstyle.FillPattern = fillPattern;
            cellstyle.Alignment = ha;
            cellstyle.VerticalAlignment = va;
            if (fillForegroundColor != null)
            {
                cellstyle.FillForegroundColor = fillForegroundColor.GetIndex();
            }
            if (fillBackgroundColor != null)
            {
                cellstyle.FillBackgroundColor = fillBackgroundColor.GetIndex();
            }
            if (font != null)
            {
                cellstyle.SetFont(font);
            }
            //有邊框
            cellstyle.BorderBottom = CellBorderType.THIN;
            cellstyle.BorderLeft = CellBorderType.THIN;
            cellstyle.BorderRight = CellBorderType.THIN;
            cellstyle.BorderTop = CellBorderType.THIN;
            return cellstyle;
        }

　　(4).合并單元格　

復(fù)制代碼代碼如下:

/// <summary>
        /// 合并單元格
        /// </summary>
        /// <param name="sheet">要合并單元格所在的sheet</param>
        /// <param name="rowstart">開始行的索引</param>
        /// <param name="rowend">結(jié)束行的索引</param>
        /// <param name="colstart">開始列的索引</param>
        /// <param name="colend">結(jié)束列的索引</param>
        public static void SetCellRangeAddress(ISheet sheet, int rowstart, int rowend, int colstart, int colend)
        {
            CellRangeAddress cellRangeAddress = new CellRangeAddress(rowstart, rowend, colstart, colend);
            sheet.AddMergedRegion(cellRangeAddress);
        }

　　4.將Excel文件輸出

　　　　FileStream stream = File.OpenWrite(@"F:/test.xls"); ;
book.Write(stream);
stream.Close();

　　以上就是使用NPOI動態(tài)生成Excel的行和列，以及單元格的樣式，具體的可以參考Demo下載.

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