NPOI WrapText 不起作用

我正在尝试使用 NPOI 为 XLSX 文件创建一个将 WrapText 设置为 true 的列。

以下方法似乎不起作用：

            var workbook = new XSSFWorkbook();
            var headerRow = sheet.CreateRow(0);
            var cellType = CellType.String;
            var colStyle = sheet.GetColumnStyle(3);
            colStyle.WrapText = true;
            sheet.SetDefaultColumnStyle(3, colStyle);
            headerRow.CreateCell(0, cellType).SetCellValue("Name");
            headerRow.CreateCell(3, cellType).SetCellValue("Comments");
            var font = workbook.CreateFont();
            font.Boldweight = (short)NPOI.SS.UserModel.FontBoldWeight.Bold;
            XSSFCellStyle style = (XSSFCellStyle)workbook.CreateCellStyle();
            style.SetFont(font);
            style.FillPattern = NPOI.SS.UserModel.FillPattern.SolidForeground;
            style.FillForegroundColor = IndexedColors.Grey25Percent.Index;
            style.IsLocked = false;
            style.WrapText = true;
            for (int i = 0; i < 6; i++)
            {
                var cell = headerRow.Cells[i];
                cell.CellStyle = style;
            }
            headerRow.RowStyle = style;

            sheet.SetColumnWidth(0, 30 * 256);
            sheet.SetColumnWidth(1, 20 * 256);
            sheet.SetColumnWidth(2, 20 * 256);
            sheet.SetColumnWidth(3, 50 * 256);
            sheet.SetColumnWidth(4, 30 * 256);
            sheet.SetColumnWidth(5, 50 * 256);
            int rowNumber = 1;
            style = (XSSFCellStyle)workbook.CreateCellStyle();
            style.IsLocked = false;
            style.WrapText = true;
            foreach (MemberListViewModel member in members)
            {
                var row = sheet.CreateRow(rowNumber++);
                row.CreateCell(0).SetCellValue(member.FullName);
                row.CreateCell(3).SetCellValue(member.endowed_professorship);
            }
            workbook.Write(output);

当然，文档对于这个来说有点轻。

关于更改代码的任何建议？ 否则，它似乎工作正常。

我只是无法让换行文工作。

编辑：

发布问题后，我修改了我的代码，以使用反射将代码与各个类分离（我使用过几个）。 这使用修改后的剑道界面，该界面在网格上具有 Excel 导出按钮。

修订后的代码包括答案中包含的修改：

                rowNumber = 1;
                var cellStyle = (XSSFCellStyle)workbook.CreateCellStyle();
                cellStyle.WrapText = true;
                foreach (var member in members)
                {
                    String value = "";
                    var aType = member.GetType();
                    var real = aType.GetProperty(headings[i]);
                    if (real != null)
                    {
                        value = (real.GetValue(member) != null) ? String.Format(format, real.GetValue(member)) : "";
                    }
                    var row = sheet.GetRow(rowNumber++);
                    cell = row.CreateCell(i);
                    cell.SetCellValue(new XSSFRichTextString(value));
                    cell.CellStyle = cellStyle;
                }

此代码现在生成所需的结果。 我还在格式中添加了XSSRichTextString，只是为了更好地衡量。

 ICellStyle CellCentertTopAlignment = workbook.CreateCellStyle();
 CellCentertTopAlignment = workbook.CreateCellStyle();
 CellCentertTopAlignment.SetFont(fontArial16);
 CellCentertTopAlignment.Alignment = HorizontalAlignment.Center;
 CellCentertTopAlignment.VerticalAlignment = VerticalAlignment.Top;
 ICell Row1 = Row1.CreateCell(1); 
 Row1.SetCellValue(new HSSFRichTextString("I find a solution for this Problem.."));
 Row1.CellStyle = CellCentertTopAlignment; 
 Row1.CellStyle.WrapText = true;

row.CreateCell(0).SetCellValue(member.FullName);
row.CreateCell(3).SetCellValue(member.endowed_professorship);

var cell0 = row.CreateCell(0);
cell0.SetCellValue(member.FullName);
cell0.Style = style;
var cell3 = row.CreateCell(3);
cell3.SetCellValue(member.endowed_professorship);
cell3.Style = style;