如果在c#中使用ClosedXML创建，则将数据追加到excel工作表

using ClosedXML.Excel;

XLWorkbook workbook = new XLWorkbook();

IXLWorksheet worksheet = workbook.Worksheets.Add("Sheet1");

List<string> data = new List<string>() { "数据1", "数据2", "数据3" };

int row = 1; // 起始行数
foreach (string item in data)
{
    worksheet.Cell(row, 1).Value = item; // 第一列
    row++;
}

workbook.SaveAs("路径/文件名.xlsx");