Question

我认为这在树视图中很常见，它有多个级别，我有一条路径，说：

Level1 > Level2 > Level3 > Level4

如何使用路径将树视图扩展到第4级？任何内置功能？

感谢。

Answer 1

完全基于文档

TreeNode mynode = treeView1.FindNode(pathToNode);
mynode.Select();
mynode.Expand();

我希望你从这里得到起点。

Answer 2

如果这个问题仍然很常见......

node.ExpandParentNodes();

这将通过使用递归和扩展的父进行。

Answer 3

试试这个：

Private Sub Expand(ByVal sPath As String)

    Dim objNode As TreeNode
    Dim preNode As TreeNode = tFolder.Nodes(0)

    preNode.Expand()

    Dim sSpl() As String = sPath.Replace("\\", "\").Split("\")

    For i As Integer = 1 To sSpl.Length - 1

        For Each objNode In preNode.Nodes
            If objNode.Text = sSpl(i) Then
                objNode.Expand()
                preNode = objNode
                Exit For

            End If
        Next

    Next

End Sub

Answer 4

Dim n As System.Web.UI.WebControls.TreeNode = Me.tree.FindNode("Root/Parent 2/Child 2")

ExpandPath(n)


Private Shared Sub ExpandPath(ByVal node As System.Web.UI.WebControls.TreeNode)
    If Not node.Parent Is Nothing Then
        node.Expand()
        ExpandPath(node.Parent)
    Else
        node.Expand()
    End If
End Sub

如何通过完整路径扩展树视图？

4 个答案: