To enumerate all the child nodes of the selected TreeNode you can use the approach shown in the example below. All the child nodes of the selected TreeNode will be selected upon a button click.
Example
| ASPX |
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<rad:RadTreeView
ID="RadTreeView1"
runat="server"
MultipleSelect="True">
</rad:RadTreeView>
<asp:Button
ID="Button1"
runat="server"
OnClick="Button1_Click" Text="Button" />
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| C# |
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protected void Button1_Click(object sender, EventArgs e)
{
if(RadTreeView1.SelectedNode!=null)
CountNodes(RadTreeView1.SelectedNode.Nodes);
}
protected void CountNodes(RadTreeNodeCollection nodes)
{
for(int i=0; i<nodes.Count; i++)
{
nodes[i].Selected = true;
if (nodes[i].Nodes.Count > 0)
{
CountNodes(nodes[i].Nodes);
}
}
}
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| VB.NET |
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Protected Sub Button1_Click(sender As Object, e As EventArgs)
If Not (RadTreeView1.SelectedNode Is Nothing) Then
CountNodes(RadTreeView1.SelectedNode.Nodes)
End If
End Sub
Protected Sub CountNodes(nodes As RadTreeNodeCollection)
Dim i As Integer
For i = 0 To nodes.Count - 1
nodes(i).Selected = True
If nodes(i).Nodes.Count > 0 Then
CountNodes(nodes(i).Nodes)
End If
Next i
End Sub
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