使用EPPlus显示带有竖排文本的单元格

using OfficeOpenXml;

// 创建一个ExcelPackage对象
using (var package = new ExcelPackage())
{
    // ...
}

// 获取工作表对象
var worksheet = package.Workbook.Worksheets.Add("Sheet1");

// 创建单元格对象
var cell = worksheet.Cells["A1"];

// 设置单元格的位置和大小
cell.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
cell.Style.VerticalAlignment = OfficeOpenXml.Style.ExcelVerticalAlignment.Center;
cell.Style.WrapText = true;
cell.Style.Orientation = OfficeOpenXml.Style.ExcelTextOrientation.Vertical;

// 创建RichText对象
var richText = new OfficeOpenXml.Style.ExcelRichText();

// 添加竖排文本片段
richText.AddText("竖排文本1");
richText.AddText("竖排文本2");
richText.AddText("竖排文本3");

// 将RichText对象应用到单元格中
cell.RichText.Add(richText);

// 保存Excel文件
package.SaveAs(new FileInfo("path/to/file.xlsx"));