“System.IndexOutOfRangeException”找不到第12列

Question

错误是它找不到第12列。但我已经仔细检查了拼写与数据库中的拼写相同。我在一个小样本上试了试，就像前3列，它起作用了。但是当我尝试使用我需要上传的文件时，它给出了错误。

我该如何修复它？

DataTable dt = new DataTable();
using (OleDbConnection con = new OleDbConnection(string.Format(CSV_CONNECTIONSTRING, csvPath)))
{
    using (OleDbDataAdapter da = new OleDbDataAdapter("SELECT * FROM ["+File_Name+"]", con))
    {
        da.Fill(dt);
    }
}

try
{
    using (SqlBulkCopy bulkCopy = new SqlBulkCopy(ConString))
    {
        bulkCopy.ColumnMappings.Add(0, "medicine_id");
        bulkCopy.ColumnMappings.Add(1, "category_id");
        bulkCopy.ColumnMappings.Add(2, "subcategory_id");
        bulkCopy.ColumnMappings.Add(3, "med_name");
        bulkCopy.ColumnMappings.Add(4, "brand");
        bulkCopy.ColumnMappings.Add(5, "form_id");
        bulkCopy.ColumnMappings.Add(6, "poison_schedule");
        bulkCopy.ColumnMappings.Add(7, "strength");
        bulkCopy.ColumnMappings.Add(8, "image");
        bulkCopy.ColumnMappings.Add(9, "quantity");
        bulkCopy.ColumnMappings.Add(10, "unit");
        bulkCopy.ColumnMappings.Add(11, "threshold");
        bulkCopy.ColumnMappings.Add(12, "price");
        bulkCopy.ColumnMappings.Add(13, "manufacturer");
        bulkCopy.ColumnMappings.Add(14, "special_instructions");
        bulkCopy.ColumnMappings.Add(15, "active1");
        bulkCopy.ColumnMappings.Add(16, "active1_strength");
        bulkCopy.ColumnMappings.Add(17, "active2");
        bulkCopy.ColumnMappings.Add(18, "active2_strength");
        bulkCopy.ColumnMappings.Add(19, "active3");
        bulkCopy.ColumnMappings.Add(20, "active3_strength");
        bulkCopy.ColumnMappings.Add(21, "active4");
        bulkCopy.ColumnMappings.Add(22, "active4_strength");

        bulkCopy.DestinationTableName = "medicine";
        bulkCopy.BatchSize = dt.Rows.Count;
        bulkCopy.WriteToServer(dt);
        bulkCopy.Close();
    }
}
catch (System.Exception ex)
{
    throw ex;
}

Answer 1

在我看来，SqlBulkCopy忽略了空值，如果你要返回空值，这应该可以解决这个问题。

编辑:归功于Igor Labutin，我在发帖前没有看到他的评论。

using (SqlBulkCopy bulkCopy = new SqlBulkCopy(ConString, SqlBulkCopyOptions.KeepNulls))