今天在做項目中,遇到使用代碼生成具有一定樣式的Excel,找了很多資料,最后終於解決了,Excel中格式的設置,以及單元格的合並等等。下面就介紹下,使用NPOI類庫操作Excel的方法。
1.首先我們先在內存中生成一個Excel文件,代碼如下:
HSSFWorkbook book = new HSSFWorkbook();
ISheet sheet = book.CreateSheet("Sheet1");
2.然后在新創建的sheet里面,創建我們的行和列,代碼如下:
IRow row = sheet.CreateRow(index);//index代表多少行 row.HeightInPoints = 35;//行高 ICell cell = row.CreateCell(0);//創建第一列 cell.SetCellValue(“設置單元格的值”);
3.設置單元格的樣式已經字體大小,邊框,以及合並單元格
(1).創建單元格字體的樣式及大小
/// <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).設置單元格內顯示數據的格式
ICell cell = row.CreateCell(1); ICellStyle cellStyleNum = Excel.GetICellStyle(book); IDataFormat formatNum = book.CreateDataFormat(); cellStyleNum.DataFormat = formatNum.GetFormat("0.00E+00");//設置單元格的格式為科學計數法
cell.CellStyle = cellStyleNum;
(3).創建單元格的邊框,背景顏色,以及對齊方式
/// <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).合並單元格
/// <summary> /// 合並單元格 /// </summary> /// <param name="sheet">要合並單元格所在的sheet</param> /// <param name="rowstart">開始行的索引</param> /// <param name="rowend">結束行的索引</param> /// <param name="colstart">開始列的索引</param> /// <param name="colend">結束列的索引</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.
PS:詳細的可以參考 http://tonyqus.sinaapp.com/tutorial
單元格的格式設置,可以參考http://tech.ddvip.com/2009-03/1238143235112434.html
http://wenku.baidu.com/view/035c53d0c1c708a1284a4444.html