主题：如何筛选

命令窗口执行：

For Each nm As String In DataTables("销售记录").GetUniqueValues("","员工")
    Dim drs As List(of DataRow) = DataTables("销售记录").Select("员工 = '" & nm & "'")
    If drs.count > =3 Then
        For i As Integer = 0 To drs.count - 3
            If drs(i)("销售收入") >= drs(i)("定额") AndAlso drs(i+1)("销售收入") >= drs(i+1)("定额") AndAlso drs(i+2)("销售收入") >= drs(i+2)("定额") Then
                output.show(nm & ":" & drs(i)("所属时期") & "-" & drs(i+2)("所属时期"))
            End If
        Next
    End If
Next