主题：临时表问题

Select Case e.DataCol.name
    Case "父亲姓名","母亲姓名"
        Dim dr As DataRow = e.DataRow
        If dr.IsNull("父亲姓名") = False AndAlso dr.IsNull("母亲姓名") = False Then
            Dim cmd As New SQLCommand
            Dim dt As DataTable
            cmd.C
            cmd.CommandText ="Select  b.[_Identify],父亲姓名,母亲姓名,拒收原因 * {学生基本信息} a Inner JOIN {拒收学生} b ON a.学生编号 = b.学生编号 WHERE 报名审批 = '拒收'"
            dt = cmd.ExecuteReader()
            If dt.SqlCompute("Count(b.[_Identify])","父亲姓名 = '" & dr("父亲姓名") & "' And 母亲姓名 = '" & dr("母亲姓名") & "'") = 1 Then

                MessageBox.Show(""& dr("学生姓名") &""& 显示拒收原因 & "!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
                e.DataRow(e.DataCol.Name) = e.OldValue '取消输入
            End If
        End If
End Select

请指点,谢谢