主题：[求助]以下代码是“按日期年、月、客户”顺序的筛选树，求改成顺序为“客户、工序、品名规格、月、年”的筛选树的代码？

对账单窗口_AfterLoad

'首先生成统计表

Dim dt As DataTable

Dim b As New GroupTableBuilder("统计表2",DataTables("统正电泳出入库登记表"))

b.Groups.AddDef("出库日期",DateGroupEnum.Year,"年")

b.Groups.AddDef("出库日期",DateGroupEnum.Month,"月")

b.Groups.AddDef("客户")

b.Totals.AddDef("品名规格",AggregateEnum.Count, "个数")

dt = b.Build '参数设置为False,生成一个临时表,不在主界面显示

'然后根据统计表生成目录树

Dim trv As WinForm.TreeView = e.Form.Controls("TreeView1")

trv.BuildTree(dt, "年|月|客户")

trv.StopRedraw

For Each nd As WinForm.TreeNode In trv.AllNodes

    Dim Year As Integer = nd.DataRow("年")

    Dim Month As Integer = nd.DataRow("月")

    Dim Product As String = nd.DataRow("客户")

    Select Case nd.Level

        Case 0

            nd.Text = nd.text & "年(" & dt.Compute("Sum(个数)","年 = " & Year) & "条)"

        Case 1

            nd.Text = nd.text & "月(" & dt.Compute("Sum(个数)","年 = " & Year & " And 月 = " & Month) & "条)"

        Case 2

            nd.Text = nd.text & "(" & nd.DataRow("个数") & "条)"

    End Select

Next

trv.Nodes.Insert("显示所有行","显示所有行(" & dt.Compute("Sum(个数)") & "条)",0)

trv.ResumeRedraw

对账单窗口_TreeView1_NodeMouseDoubleClick

Dim Filter As String = ""

If e.node.Name <> "显示所有行" Then '要用Name属性,不能用Text属性

    Dim d1 As Date

    Dim d2 As Date

    Dim Year As Integer = e.Node.DataRow("年")

    Dim Month As Integer = e.Node.DataRow("月")

    Dim Product As String = e.Node.DataRow("客户")

    Select Case e.Node.Level

        Case 0

            d1 = New Date(Year,1,1) '取得该年的第一天

            d2 = new Date(Year,12,31) '取得该年的最后一天

            Filter = "出库日期 >= #" & d1 & "# And 出库日期 <= #" & d2 & "#"

        Case 1

            d1 = New Date(Year, Month, 1) '取得该月的第一天

            d2 = new Date(Year, Month, Date.DaysInMonth(Year,Month)) '取得该月的最后一天

            Filter = "出库日期 >= #" & d1 & "# And 出库日期 <= #" & d2 & "#"

        Case 2

            d1 = New Date(Year, Month, 1) '取得该月的第一天

            d2 = new Date(Year, Month, Date.DaysInMonth(Year,Month)) '取得该月的最后一天

            Filter = "出库日期 >= #" & d1 & "# And 出库日期 <= #" & d2 & "# And 客户 = '" & Product & "'"

    End Select

End If

e.Form.controls("统正对账单").Table.Filter = Filter