Hi Alexey ,
You can show the selection of the child node of a parentnode when you double click on another parent node. To achieve this behavior, you have to use Background property of the child node to show the selection. Please refer to the following code snippet.
foreach (TreeNodeAdv treenode in treeViewAdv1.Nodes)
{
foreach (TreeNodeAdv treenode1 in treenode.Nodes)
{
if (treenode1.Text == "Node4")
treenode1.Background = new Syncfusion.Drawing.BrushInfo(System.Drawing.Color.Wheat);
}
}
The attached sample demonstrates this behavior completely.
http://websamples.syncfusion.com/samples/Tools.Windows/F70447/main.htmPlease refer to it and let me know if you have any questions.
Thanks,
Nagaraj