如何解决索引超出范围错误？

Question

我开发了一段代码，允许通过逐行放置一个值来削减excel中一个单元格的值，并且出现以下错误：

“索引超出范围。它不能为负，并且必须小于参数名称：index的大小”

private DataTable trasnformDT(DataTable dt1)
    {
        DataTable dt = dt1.Clone();
        int i = 0;
        foreach (DataRow row in dt1.Rows)
        {
            List<string> Word_countLst = row["Word_count"].ToString().Trim().TrimStart('[').TrimEnd(']').Split(',').ToList();
            List<string> command_addressLst = row["command_address"].ToString().Trim().TrimStart('[').TrimEnd(']').Split(',').ToList();
            List<string> response_addressLst = row["response_address"].ToString().Trim().TrimStart('[').TrimEnd(']').Split(',').ToList();

            string[] Register_numberLst = row["Register_number"].ToString().Trim().TrimStart('[').TrimEnd(']').Split(',');
            string[] Register_valueLst = row["Register_value"].ToString().Trim().TrimStart('[').TrimEnd(']').Split(',');

            if (row["Word_count"].ToString().Trim() == "[]")
            {

                if (command_addressLst.Count() == response_addressLst.Count())
                {
                    int j = 0;
                    foreach (string item in command_addressLst)
                    {
                        //    long cacount = Int64.Parse(item);

                        DataRow dr = dt.NewRow();
                        dr.ItemArray = row.ItemArray;
                        dr["command_address"] = command_addressLst[j];
                        dr["response_address"] = response_addressLst[j];
                        dt.Rows.Add(dr);
                        j++;
                    }
                }

            }

            else

                {
                   foreach (string item in Word_countLst)
                    foreach (string item2 in command_addressLst)
                    {
                            long wcount = Int64.Parse(item);
                            long wcount2 = Int64.Parse(item2);
                            for (int j = 0; j < wcount; j++)
                            {
                                DataRow dr = dt.NewRow();
                                dr.ItemArray = row.ItemArray;
                                dr["Word_count"] = item;
                                dr["Register_number"] = Register_numberLst[j];
                                dr["Register_value"] = Register_valueLst[j];
                                dr["command_address"] = item2;
                                dr["response_address"] = item2;
                            dt.Rows.Add(dr);
                            }

                        }
                }


            i++;
        }

        return dt;
    }

我想拆分word_count，register_value和register_number，但对于command_address和command_response则将其拆分，就像对word_count一样，但又要另外一个长度。但是这段代码是双重的