原文网址 https://www.cnblogs.com/love-zf/p/7450409.html
BorderStyle.Thin 全称为 NPOI.SS.UserModel.BorderStyle.Thin
最后那个关于报错的修改,亲测有效.
网上找到了，HSSFWorkbook自定义颜色的例子(讲的还挺细致的)，但是XSSFWorkbook确没找到...研究了一下，坑掉了一地...
NPOI.XSSF.UserModel.XSSFWorkbook xssfworkbook = new NPOI.XSSF.UserModel.XSSFWorkbook();
方案壹：>>XSSFCellStyle
XSSFCellStyle rowsStyleColor = (XSSFCellStyle)xssfworkbook.CreateCellStyle();
XSSFColor xssfColor = new XSSFColor();
//根据自己需要设置RGB
byte[] colorRgb = { (byte)252, (byte)139, (byte)139 };
xssfColor.SetRgb(colorRgb);
rowsStyleColor.FillForegroundColorColor = xssfColor;
rowsStyleColor.FillPattern = FillPattern.SolidForeground;
方案贰：>>ICellStyle
ICellStyle rowsStyleColor = (XSSFCellStyle)xssfworkbook.CreateCellStyle(); rowsStyleColor.Alignment = HorizontalAlignment.Center; rowsStyleColor.VerticalAlignment = VerticalAlignment.Center; rowsStyleColor.BorderBottom = BorderStyle.Thin; rowsStyleColor.BorderLeft = BorderStyle.Thin; rowsStyleColor.BorderRight = BorderStyle.Thin; rowsStyleColor.BorderTop = BorderStyle.Thin; rowsStyleColor.WrapText = true; //设置背景颜色... rowsStyleColor.FillForegroundColor = 0; rowsStyleColor.FillPattern = FillPattern.SolidForeground; ((XSSFColor)rowsStyleColor.FillForegroundColorColor).SetRgb(new byte[] { 252, 139, 139 });
感觉挺别扭的...一点搞不好，就是错误...
其他的报错:
//****************************文件流... public ActionResult ExportExcelFile() { byte[] streamData = null; try { MemoryStream file = new MemoryStream(); workbook.Write(file); /*这个错误导致我一直以为NPOI不能导出不报错的.xlsx类型的Excel呢!!!···*/ streamData = file.ToArray();//这种写法就可以的... //streamData =file.GetBuffer();//用这么的写法，导出的Excel，就是报错,类似格式不正确，需要修复才能打开... if (streamData == null || streamData.Length == 0) { return Content("无数据供导出。"); } Response.Charset = "UTF-8"; Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); Response.ContentType = "application/octet-stream"; Response.AddHeader("Content-Disposition", "filename=Test.xlsx"); Response.AddHeader("Content-Length", streamData.LongLength.ToString()); Response.BinaryWrite(streamData); Response.Flush(); Response.End(); return null; } catch (Exception ex) { return Content("未知错误>>>"); } }