NPOI-Styling合并单元格

Question

我想在合并的单元格中设置 ForegroundColor 和居中文本。

是否可以通过 NPOI 做到这一点？

这是我的table：

我知道如何设置border.But我找不到关于更改合并单元格样式的资源。

有人可以给我一些提示或帮助吗？

Answer 1

对于行，您必须像这样单独设置

XSSFSheet sheet = (XSSFSheet)workbook.CreateSheet("Template");
XSSFCellStyle headerStyle = (XSSFCellStyle)workbook.CreateCellStyle();
headerStyle.WrapText = true;
headerStyle.FillForegroundColor = IndexedColors.LightBlue.Index;
headerStyle.Alignment = HorizontalAlignment.Center;
var row = sheet.CreateRow(0);
row.Cells[YourheaderIndex].CellStyle = headerStyle;

对于列，您可以将样式设置为

XSSFCellStyle defaultStyle = (XSSFCellStyle)workbook.CreateCellStyle();
defaultStyle.WrapText = true;
defaultStyle.Alignment = HorizontalAlignment.Left;
defaultStyle.VerticalAlignment = VerticalAlignment.Top;
sheet.SetDefaultColumnStyle(YourheaderIndex, defaultStyle);

要将样式应用于合并的单元格，您可以尝试这种方法，尽管代码未经测试，但它会为 NPOI 中的可用方法提供很好的思路

int mergedRegions = sheet.NumMergedRegions;
for (int regions = 0; regions < mergedRegions; regions++)
{
    CellRangeAddress mergedRegionIndex = sheet.GetMergedRegion(regions);

    for (int currentRegion = mergedRegionIndex.FirstRow; currentRegion < mergedRegionIndex.LastRow; currentRegion++)
    {
        var currentRow = sheet.GetRow(currentRegion);

        for (int currentCell = mergedRegionIndex.FirstColumn; currentCell < mergedRegionIndex.LastColumn; currentCell++)
        {
            // sheet.SetDefaultColumnStyle(i, mandatoryCellStyle);
            currentRow.Cells[currentCell].CellStyle = headerStyle;
        }
    }
}

Answer 2

  var cra = new NPOI.SS.Util.CellRangeAddress(rowNum, rowNum + 6, 2, 5);
            excelSheet.AddMergedRegion(cra);          
            RegionUtil.SetBorderBottom(1, cra, excelSheet, workbook);//Bottom border  
            RegionUtil.SetBorderLeft(1, cra, excelSheet, workbook);//Left border  
            RegionUtil.SetBorderRight(1, cra, excelSheet, workbook);//Right border  
            RegionUtil.SetBorderTop(1, cra, excelSheet, workbook);

NPOI-Styling合并单元格

NPOI-Styling merged cell

npoi