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请问下各位，我一个窗口有4个目录树，我想每个目录树都设置成“筛选树显示统计数据”这样的样式，下面这段代码我要怎么改变才好操作点~

麻烦各位老师帮忙看看，谢谢啦！

'首先生成统计表
Dim dt As DataTable
Dim b As New GroupTableBuilder("统计表1",DataTables("订单"))
b.Groups.AddDef("日期",DateGroupEnum.Year,"年")
b.Groups.AddDef("日期",DateGroupEnum.Month,"月")
b.Groups.AddDef("产品")
b.Totals.AddDef("客户",AggregateEnum.Count,"订单数") '根据客户列来统计记录数,也就是订单数
dt = b.Build(False) '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|产品")
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("产品")
    Select Case nd.Level
        Case 0
            nd.Text = nd.text & "年(" & dt.Compute("Sum(订单数)","年 = " & Year) & "条)"
        Case 1
            nd.Text = nd.text & "月(" & dt.Compute("Sum(订单数)","年 = " & Year & " And 月 = " & Month) & "条)"
        Case 2
            nd.Text = nd.text & "(" & nd.DataRow("订单数") & "条)"
    End Select
Next
trv.Nodes.Insert("显示所有行","显示所有行(" & dt.Compute("Sum(订单数)") & "条)",0)
trv.ResumeRedraw

每个树统计的东西不一样,无法取巧.老实一个个树分开写.

请问下最后一个节点改成日怎么改，我怎么改都提示错误

b.Groups.AddDef("日期",DateGroupEnum.Year,"年")
b.Groups.AddDef("日期",DateGroupEnum.Month,"月")

b.Groups.AddDef("日期",DateGroupEnum.Day,"日")

For Each nd As WinForm.TreeNode In trv.AllNodes

Dim Year As Integer = nd.DataRow("年")

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

Dim Day As String = nd.DataRow("日")

Select Case nd.Level

Case 0

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

Case 1

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

Case 2

nd.Text = nd.text & "月(" & dt.Compute("Sum(订单数)","年 = " & Year & " And 月 = " & Month & "and 日=" Day) & "条)"

End Select

谢谢老师，请问老师这段代码最后一个节点怎么变成”日“~

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("委托单位")

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 = "委托日期 >= #" & d1 & "# And 委托日期 <= #" & 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 = "委托日期 >= #" & d1 & "# And 委托日期 <= #" & 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 = "委托日期 >= #" & d1 & "# And 委托日期 <= #" & d2 & "# And 委托单位 = '" & Product & "'"

End Select

End If

Tables("导航栏_Table1").Filter = Filter

你上例子吧,代码上面我已经给过示例了.

主题：多目录树代码