C#批量删除Excel重复项的实现方法

using Spire.Xls;
using System.Linq;
 
namespace RemoveDuplicateRows
{
    class Program
    {
        static void Main(string[] args)
        {
            //加载Excel文件
            Workbook workbook = new Workbook();
            workbook.LoadFromFile("示例.xlsx");
 
            //获取第一张工作表
            Worksheet sheet = workbook.Worksheets[0];
 
            //指定需要删除重复记录的单元格区域
            var range = sheet.Range["A1:A" + sheet.LastRow];
 
            //获取重复项的行号
            var duplicatedRows = range.Rows
                   .GroupBy(x => x.Columns[0].DisplayedText)
                   .Where(x => x.Count() > 1)
                   .SelectMany(x => x.Skip(1))
                   .Select(x => x.Columns[0].Row)
                   .ToList();
 
            //删除重复行     
            for (int i = 0; i < duplicatedRows.Count; i++)
            {
                sheet.DeleteRow(duplicatedRows[i] - i);
            }
 
            //保存Excel文件
            workbook.SaveToFile("删除重复行.xlsx");
        }
    }
}