以文本方式查看主题 -  Foxtable(狐表)  (http://foxtable.net/bbs/index.asp) --  专家坐堂  (http://foxtable.net/bbs/list.asp?boardid=2) ----  目录树不限级生成优化，如果不生产多余行  (http://foxtable.net/bbs/dispbbs.asp?boardid=2&id=150431)

--  作者：weibu --  发布时间：2020/5/29 18:58:00 --  目录树不限级生成优化，如果不生产多余行 老师这段代码如何优化，不是生成多行再删除，而是仅生成一条数据 Dim dt As DataTable = DataTables("department") Dim dic As New Dictionary(of Integer, Integer) Dim prevLevel As Integer = 0 Dim idxs As String = "-1," For Each nd As WinForm.TreeNode In e.Form.Controls("TreeView1").AllNodes     If nd.Level = 0 AndAlso dic.count > 0 Then         Dim temp = dic(0)         dic.Clear         dic.Add(0, temp)     End If          If dic.ContainsKey(nd.Level) = False Then         dic.Add(nd.Level, 1)     Else         dic(nd.Level) = dic(nd.Level) + 1     End If     For i As Integer = nd.level + 1 To prevLevel         dic(i) = 0     Next          prevLevel = nd.Level     Dim ndr As DataRow     If nd.DataRow IsNot Nothing Then         ndr = dt.Find("_Identify = " & nd.DataRow("_Identify"))     Else         ndr = dt.AddNew     End If     idxs &= ndr("_Identify") & ","     Dim str As String = ""     For i As Integer = 0 To nd.Level         str &= format(dic(i), "000") & "."     Next     ndr("departno") = str.TrimEnd(".")     ndr("department") = nd.Text Next  dt.DeleteFor("_Identify not in (" & idxs & ")")

--  作者：有点蓝 --  发布时间：2020/5/30 8:42:00 --   http://www.foxtable.com/bbs/dispbbs.asp?boardid=2&Id=122759