主题：筛选树不能更新数据

Dim dt As DataTable

Dim b As New GroupTableBuilder("统计表1",DataTables("报价进度管理"))

b.Groups.AddDef("依赖日期",DateGroupEnum.Year,"年")

b.Groups.AddDef("依赖日期",DateGroupEnum.Month,"月")

b.Groups.AddDef("客户")

b.Totals.AddDef("项目号",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|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(订单数)","年 = " & Year) & "单)"

        Case 1

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

        Case 2

            nd.Text = nd.text & "(" & nd.DataRow("订单数") & "单)"

    End Select

Next

trv.Nodes.Insert("显示所有行","显示所有行(" & dt.Compute("Sum(订单数)") & "单)",0)

trv.ResumeRedraw