TreeNode as ByRef

[aryanbs]

I was doing some treeNode related work and passed a treenode as a reference(thoug h I could pass a copy of reference using ByVal). And the result was duplicated nodes in TreeView. This is not a problem but I just want to know why it duplicates Node, My code follows, just a treeview and a button is needed in a form. Thanks for help

Option Strict On
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        CheckFromList(TreeView1.Nodes(0))
    End Sub
    Public Shared Sub CheckFromList(ByRef NodetoCheck As TreeNode)
        For Each node2 As TreeNode In NodetoCheck.Nodes
            If node2.Text = "David" Then
                node2.Checked = True
            End If
        Next
    End Sub
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        TreeView1.CheckBoxes = True
        Dim tn As TreeNode = TreeView1.Nodes.Add("<<Top>>")
        tn.Nodes.Add("David")
    End Sub
End Class

[Frinavale]

How do you know that the node is duplicated?


-Frinny

[aryanbs]

Frinny!
First of all thanks for looking into the code, I have posted the sample code which gave me such result. Did you try that? I am using Visual Studio 2008 and working with .Net Framework 3.5

My above statement
" just a treeview and a button is needed in a form. Thanks for help"
Just create a new project and add a treeview and button with their default name and paste my code, If same thing happens whats happening with me, you will surely see what I mean.

Thanks Again

Edit: By the way above code is just a sample done in clean project, I got this thing in a big project but making it easier to answerers to get the insight of the problem quickly

[aryanbs]

So let go this thread to pass in peace?