无法转换类型为＆＃39; NPOI.XSSF.UserModel.XSSFCell＆＃39;键入＆＃39; System.IConvertible＆＃39;

Question

我正在使用NPOI来阅读excel电子表格。我在代码dr [“Amount”] = row.GetCell（4）时遇到上述错误。有人可以告诉我问题是什么。

     XSSFWorkbook xssfwb;
            using (FileStream file = new FileStream(excelPath, FileMode.Open, FileAccess.Read))
            {
                xssfwb = new XSSFWorkbook(file);
            }

            var sheet = xssfwb.GetSheetAt(0); // Change this to the worksheet you want to import.
            var rows = sheet.GetRowEnumerator();
            var dtExcelData = new DataTable();
            var linenumber = 0;
            DataRow dr;


            dtExcelData.Columns.AddRange(new DataColumn[3] { 
            new DataColumn("AccountNumber", typeof(string)),
            new DataColumn("Amount", typeof(decimal)),
            new DataColumn("Sedol",typeof(string)) });
        while (rows.MoveNext())
        {
            var row = (XSSFRow)rows.Current;
            linenumber++;



   if (row.GetCell(0) != null)
            {
                dr = dtExcelData.NewRow();
                dr["AccountNumber"] = row.GetCell(1).ToString();
                dr["Amount"] = row.GetCell(4);
                dr["Sedol"] = row.GetCell(11).ToString();

                dtExcelData.Rows.Add(dr);
            }
        }

Answer 1

看起来您正在尝试将对象放入十进制字段中。你可以试试

dr["Amount"] = decimal.parse(row.GetCell(4).toString());

查看是否可以解决您的错误。