Question

我的代码用来读取excel文件中的值有点问题。我使用循环读取每行的行数和每个单元格的单元格。

excel文件中的第152行正确读取但在第153行之后，我只获得每个单元格的空值。

这是我的代码：

public DataTable parseExcelFile(string path,bool firstLineHeader)
{
    DataTable values = new DataTable("Impayés");
    Excel.Application appExcel = new Excel.Application();
    Excel.Workbook wb = appExcel.Workbooks.Open(path, Type.Missing, Type.Missing, Type.Missing, Type.Missing,Type.Missing, Type.Missing, Type.Missing, Type.Missing,Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
    Excel.Worksheet sheet = (Excel.Worksheet)wb.Sheets["Feuil1"];
    Excel.Range excelRange = sheet.UsedRange;
    bool premiere = firstLineHeader;
    foreach (Excel.Range row in excelRange.Rows)
    {
        if (!premiere)
        {
            int rowNumber = row.Row;//Récupération du numéro de ligne
            //Récupération des valeurs des cellules de la ligne en cours
            string groupe = Convert.ToString(row.Range["A" + rowNumber.ToString()].Value);
            if (groupe == null)
                MessageBox.Show("Eh c'est vide ! (Ligne "+ rowNumber.ToString() + ")");
            string sousgroupe = Convert.ToString(row.Range["B" + rowNumber.ToString()].Value);
            string codeapporteur = Convert.ToString(row.Range["C" + rowNumber.ToString()].Value);
            string apporteur = Convert.ToString(row.Range["D" + rowNumber.ToString()].Value);
            string dossier = Convert.ToString(row.Range["E" + rowNumber.ToString()].Value);
            string siren = Convert.ToString(row.Range["F" + rowNumber.ToString()].Value);
            string client = Convert.ToString(row.Range["G" + rowNumber.ToString()].Value);
            string adresse = Convert.ToString(row.Range["H" + rowNumber.ToString()].Value);
            string localite = Convert.ToString(row.Range["I" + rowNumber.ToString()].Value);
            string cp = Convert.ToString(row.Range["J" + rowNumber.ToString()].Value);
            string ville = Convert.ToString(row.Range["K" + rowNumber.ToString()].Value);
            string telephone = string.Format("{0:00}{1:00}{2:00}{3:00}{4:00}", row.Range["L" + rowNumber.ToString()].Value, row.Range["M" + rowNumber.ToString()].Value,row.Range["N" + rowNumber.ToString()].Value,row.Range["O" + rowNumber.ToString()].Value,row.Range["P" + rowNumber.ToString()].Value);
            string etat = Convert.ToString(row.Range["Q" + rowNumber.ToString()].Value);
            string bic = Convert.ToString(row.Range["R" + rowNumber.ToString()].Value);
            string iban = Convert.ToString(row.Range["S" + rowNumber.ToString()].Value);
            RIB rib = new RIB(bic, iban);
            string domiciliationrib = Convert.ToString(row.Range["T" + rowNumber.ToString()].Value);
            string bienfinance = Convert.ToString(row.Range["U" + rowNumber.ToString()].Value);
            decimal mt_ht_fi = Convert.ToDecimal(row.Range["V" + rowNumber.ToString()].Value);
            decimal mt_ech = Convert.ToDecimal(row.Range["W" + rowNumber.ToString()].Value);
            string dateapp = Convert.ToString(row.Range["X" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["Y" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["Z" + rowNumber.ToString()].Value);
            string terme = Convert.ToString(row.Range["AA" + rowNumber.ToString()].Value);
            string premiereech = Convert.ToString(row.Range["AB" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AC" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AD" + rowNumber.ToString()].Value);
            string derniereech = Convert.ToString(row.Range["AE" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AF" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AG" + rowNumber.ToString()].Value);
            int nbimp = MyConverter.ToInt(Convert.ToString(row.Range["AH" + rowNumber.ToString()].Value));
            decimal mt_imp_1 = Convert.ToDecimal(row.Range["AI" + rowNumber.ToString()].Value);
            string dateimpaye1 = Convert.ToString(row.Range["AJ" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AK" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AL" + rowNumber.ToString()].Value);
            int motifimpaye1 = MyConverter.ToInt(Convert.ToString(row.Range["AM" + rowNumber.ToString()].Value));
            string dateimpaye2 = Convert.ToString(row.Range["AN" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AO" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AP" + rowNumber.ToString()].Value);
            int motifimpaye2 = MyConverter.ToInt(Convert.ToString(row.Range["AQ" + rowNumber.ToString()].Value));
            string dateimpaye3 = Convert.ToString(row.Range["AR" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AS" + rowNumber.ToString()].Value) + "/" + Convert.ToString(row.Range["AT" + rowNumber.ToString()].Value);
            int motifimpaye3 = MyConverter.ToInt(Convert.ToString(row.Range["AU" + rowNumber.ToString()].Value));
            DataRow dr = values.Rows.Add(groupe, sousgroupe, codeapporteur, apporteur, dossier, siren, client, adresse, localite, cp, ville, telephone, etat, bic, iban, domiciliationrib, bienfinance, mt_ht_fi, mt_ech, dateapp, terme, premiereech, derniereech, nbimp, mt_imp_1, dateimpaye1, motifimpaye1, dateimpaye2, motifimpaye2, dateimpaye3, motifimpaye3);
        }
        else
        {
            foreach (Excel.Range eRange in row.Range["A1:AU1"].Cells)
            {
                if (eRange.Value != "TEL2" && eRange.Value != "TEL3" && eRange.Value != "TEL4" && eRange.Value != "TEL5" && eRange.Value != "Col_21" && eRange.Value != "Col_22" && eRange.Value != "Col_25" && eRange.Value != "Col_26" && eRange.Value != "Col_28" && eRange.Value != "Col_29")
                    values.Columns.Add(eRange.Value);
            }
            premiere = false;
        }
    }
    return values;
}

这是我的excel文件的示例行：

Answer 1

尝试删除该行152，或在文档中向上或向下移动，并查看该行后面是否有错误。

如果将该行移动到145，然后程序在第145行停止，那么我们找到了问题的根源：它是数据。该行中可能存在无效或不可读的字符，并且会使程序崩溃。它最有可能是其中一行中应该是十进制或整数的字母。

此外，每次运行循环时，都要实例化所有字符串，小数和整数。你应该在循环之前声明它们，然后在循环中设置它们的值。这是一般的良好做法。

Excel阅读器无理由地返回空值c＃

1 个答案: