Dim tr As WinForm.TreeView = Forms("窗口").Controls("TreeView1") Dim nd0,nd1,nd2 As WinForm.TreeNode Dim fs As Integer tr.Nodes.Clear '清空原来的节点:::::::::: For Each dr As DataRow In DataTables("单位树").Select("","标题id") If dr("标题id") <> "" Then fs = dr("节点") Select Case fs Case 0 nd0 = tr.Nodes.Add(Rand.NextString(10),dr("标题")) Case 1 nd1 = nd0.Nodes.Add(Rand.NextString(10),dr("标题")) Case 2 nd2 = nd1.Nodes.Add(Rand.NextString(10),dr("标题")) End Select End If Next
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