C# 列表视图列标题索引返回-1

我有一个列表视图，我声明了如下列标题

    private System.Windows.Forms.ColumnHeader Debtorname;
    private System.Windows.Forms.ColumnHeader Message;
    private System.Windows.Forms.ColumnHeader Hpno;
    private System.Windows.Forms.ColumnHeader Status;
    private System.Windows.Forms.ColumnHeader Timestamp;
    private System.Windows.Forms.ColumnHeader sentBY;
    private System.Windows.Forms.ColumnHeader submitTime;
    private System.Windows.Forms.ColumnHeader debtorid;
    private System.Windows.Forms.ColumnHeader Account;

    private System.Windows.Forms.ColumnHeader Client;
    private System.Windows.Forms.ColumnHeader Batchno;

 ListViewItem lvi = new ListViewItem(new string[lstSMSReport.Columns.Count]);
 lvi.SubItems[Debtorname.Index].Text = myReader["debtorName"].ToString();
 lvi.SubItems[Status.Index].Text = myReader["status"].ToString();

 lvi.SubItems[Timestamp.Index].Text = myReader["timestamp"].ToString();

我填充listviewitems，如下所示

    private System.Windows.Forms.ColumnHeader Debtorname;
    private System.Windows.Forms.ColumnHeader Message;
    private System.Windows.Forms.ColumnHeader Hpno;
    private System.Windows.Forms.ColumnHeader Status;
    private System.Windows.Forms.ColumnHeader Timestamp;
    private System.Windows.Forms.ColumnHeader sentBY;
    private System.Windows.Forms.ColumnHeader submitTime;
    private System.Windows.Forms.ColumnHeader debtorid;
    private System.Windows.Forms.ColumnHeader Account;

    private System.Windows.Forms.ColumnHeader Client;
    private System.Windows.Forms.ColumnHeader Batchno;

 ListViewItem lvi = new ListViewItem(new string[lstSMSReport.Columns.Count]);
 lvi.SubItems[Debtorname.Index].Text = myReader["debtorName"].ToString();
 lvi.SubItems[Status.Index].Text = myReader["status"].ToString();

 lvi.SubItems[Timestamp.Index].Text = myReader["timestamp"].ToString();

当我运行上面的程序时，我得到了我期望的结果，但是下面的两个ColumnHeader抛出了异常

  lvi.SubItems[Client.Index].Text = myReader["clientname"].ToString();
  lvi.SubItems[Batchno.Index].Text = myReader["batchno"].ToString();

当我把两个放进去时，试着接住。然后我意识到a-1作为两列的索引返回。我花了几个小时想弄明白为什么，但还是弄不明白

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如果您有任何建议，我们将不胜感激。

myReader、clientname、batchno中的结果在myReader中可用？？是的。我甚至将它们传递给字符串变量进行测试。谢谢，但我发现了错误。原来我的前任为我不知道的项目设置了一个条件。谢谢大家。