主题：[求助] Identify 列取值

Dim cmd As New S QLCommand
cmd.C
Dim dt As DataTable
cmd.CommandText = "S  elect * From {流水账查询}"
dt = cmd.ExecuteReader(True) '记得将参数设置为True

e.Form.Controls("Tex_流水账ID").Value = dt.Compute("max(_Identify)")

为什么没有取到数值呢