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Checked Nodes in Treeview

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92235 Dec 29,2009 08:47 PM Dec 30,2009 07:36 AM ASP.NET Web Forms (Classic) 1
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Ronald Rasmussen
Asked On December 29, 2009 08:47 PM

If I use the folowing code to walk through the checked nodes in a treeview will I ever get a child node BEFORE I get the parent node?

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)

For Each tv As TreeViewNode In TreeView1.SelectedNodes

Text1.Text += tv.Text

Next tv

End Sub

Venkatesh S [Syncfusion]
Replied On December 30, 2009 07:36 AM

Hi Ron,

Thank you for your interest in Syncfusion products.

The child nodes can be retrieved before their parent node.

Following code snippet can be used to acheive your requirement

[C#]

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim allCheckedNodes As New List(Of TreeViewNode)()
childparent(TreeView1.Items, allCheckedNodes)
For Each tv As TreeViewNode In allCheckedNodes
Text1.Text += tv.Text
Next tv
End Sub

Protected Sub childparent(ByVal listItems As IList, ByVal list As List(Of TreeViewNode))
For Each tv As TreeViewNode In listItems
If tv.HasSubNodes Then
childparent(tv.Items, list)
End If
If tv.Checked AndAlso tv.ShowCheckBox Then
list.Add(tv)
End If
Next tv
End Sub


Please let us know if it helps you.

Regards
Venkatesh

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