Foxtable(狐表)用户栏目专家坐堂 → 递归生成目录树的效率问题


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主题:递归生成目录树的效率问题

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扶风
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  发帖心情 Post By:2016/4/22 17:32:00 [只看该作者]

老师,e.Sender.ExpandAll是写在afterload里吗? 写进去报错
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帅哥哟,离线,有人找我吗?
大红袍
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  发帖心情 Post By:2016/4/22 17:37:00 [只看该作者]

Dim trv As WinForm.TreeView = e.form.controls("TreeView1")
trv.StopRedraw
For Each pnd As WinForm.TreeNode In trv.allNodes
    If pnd.level = 1 Then  '如果是表名节点
        pnd.Nodes.Clear  '清空原有节点
        Dim tbName As String = pnd.Name
        Dim dr As DataRow = DataTables("表B").Find("表名 = '" & tbName & "'")
        If dr IsNot Nothing Then
            Dim Cols As String = dr("目录树列")
            Dim Cols_sort As String = Cols.replace("|",",")
           
            Dim nds As new List(Of WinForm.TreeNode)
            For i As Integer = 0 To Cols.Split("|").Length
                nds.Add(pnd)
            Next
            If nds.Count > 2 Then
                For Each arys As String() In DataTables(tbName).GetValues(Cols, "", Cols_sort)
                    Dim flag As Boolean = False
                    For i As Integer = 0 To arys.Length - 1
                        If nds(i+1).Name <> arys(i) OrElse flag Then
                            flag = True
                            nds(i+1) = nds(i).Nodes.Add(arys(i))
                        End If
                    Next
                Next
            Else
                For Each arys As String In DataTables(tbName).GetValues(Cols, "", Cols_sort)
                    nds(1) = nds(0).Nodes.Add(arys)
                Next
            End If
           
            pnd.Expand
        End If
    End If
Next
trv.ResumeRedraw

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