主题：筛选窗口设计求助

Dim dt As DataTable

Dim b As New GroupTableBuilder("统计表1",DataTables("备用金收支明细表"))

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

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

dt = b.Build(True)

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

trv.BuildTree(dt, "年|月")

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")

    Select Case nd.Level

        Case 0

            nd.Text = nd.text & "年"

        Case 1

            nd.Text = nd.text & "月"           

    End Select

Next

trv.Nodes.Insert("显示所有行",0)

trv.ResumeRedraw