Treeview - 循環所有節點並更改子節點中的文本

Question

我需要循環遍歷Treeview中的所有節點，然後更改它的文本如果我的字符串匹配。我發現你必須做一個遞歸循環，但我不知道如何使用這個。這是遞歸循環：

Private Sub PrintRecursive(ByVal n As TreeNode) 
     System.Diagnostics.Debug.WriteLine(n.Text) 
     MessageBox.Show(n.Text) 
     Dim aNode As TreeNode 
     For Each aNode In n.Nodes 
      PrintRecursive(aNode) 
     Next 
    End Sub 

    ' Call the procedure using the top nodes of the treeview. 
    Private Sub CallRecursive(ByVal aTreeView As TreeView) 
     Dim n As TreeNode 
     For Each n In aTreeView.Nodes 
      PrintRecursive(n) 

     Next 
    End Sub 

例如，如果我的字符串爲「新建文件夾」我需要通過樹形迴路相同Node.text，這樣我可以改變它。任何幫助讚賞。

Answer 1

爲了更改文本，您可以提供舊的和新的文本像這樣的參數：

Private Sub PrintRecursive(ByVal n As TreeNode, oldText As String, newText As String) 
    System.Diagnostics.Debug.WriteLine(n.Text) 
    MessageBox.Show(n.Text) 
    If String.Compare(n.Text, oldText, True) = 0 Then 
     n.Text = newText 
    End If 
    Dim aNode As TreeNode 
    For Each aNode In n.Nodes 
     PrintRecursive(aNode, oldText, newText) 
    Next 
End Sub 

' Call the procedure using the top nodes of the treeview. 
Private Sub CallRecursive(ByVal aTreeView As TreeView, oldText As String, newText As String) 
    Dim n As TreeNode 
    For Each n In aTreeView.Nodes 
     PrintRecursive(n, oldText, newText) 
    Next 
End Sub 

這樣，每個節點被選中的文本，新文本應用，如果現有的文字與您正在查找的文字相符。