请问在多选筛选树中，如何实现系统中的显行所有行功能，即清除所有节点的选中标记

此主题相关图片如下：3.png

窗口10_AfterLoad

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

flt.BuildTree("出库", "部门|类别|物料名称")

flt.Nodes.Insert("显示所有行",0)

窗口10_TreeView1_AfterCheckNode

Dim nms As String() = {"部门","类别","物料名称"} \'指定生成目录树的各列

Dim qts As String() = {"\'","\'","\'"} \'指定将各列的值括起来的符号,这里都是字符型,所以都是单引号

Dim trv As WinForm.TreeView = e.Sender

Dim Flt As String = ""

Dim nd As WinForm.TreeNode

For Each nd In e.node.allNodes \'清除子节点的选中标记

    nd.Checked = False

Next

nd = e.Node.ParentNode

Do While nd IsNot Nothing \'清除父节点的选中标记

    nd.Checked = False

    nd = nd.ParentNode

Loop

For Each nd In trv.AllNodes

    If nd.Checked  Then

        Dim rts() As String = nd.FullPath.Split("\\")

        Dim val As String = ""

        For i As Integer = 0 To rts.length - 1

            If val > "" Then

                val = val & " And "

            End If

            val = val & nms(i) & " = " & qts(i) & rts(i) & qts(i)

        Next

        If flt > "" Then

            flt = flt & " Or (" & val & ")"

        Else

            flt = val

        End If

    End If

Next

Tables("出库").Filter  = flt

参考

http://foxtable.com/bbs/dispbbs.asp?BoardID=2&ID=32484&skin=0