Changing the Selected Tree Node Programatically after changing Pages without using the Tree View

[Chris]

Hi,

Can anyone help with what seemed to be relatively easy action, and has now plagued me for sometime.

What i require to do is change the selected "highlighted node" in my tree view when i change my current page without clicking the tree view itself.? I change page programmatically and require the tree view to correspond to the new page once it has loaded.

I have managed to get the tree view selecting the top parent node using the following code, however and attempts to achieve anything slightly more accurate i fall short.!

Sample Line Of Code Below.

((

CS_MainForm)this.Owner).treeView.SelectedNode = ((CS_MainForm)this.Owner).treeView.Nodes[0];

Sample Line Of Code Above.

I have tried to change the selected node using the line of code below, but have had no joy..

Sample Line Of Code Below.

 

((

CS_MainForm)this.Owner).treeView.SelectedNode = ((CS_MainForm)this.Owner).treeView.Nodes["New Page Name"];

Sample Line Of Code Above.

So far all of my attempts have failed and i would be grateful if somebody could offer me some assistance. I have a feeling its staring me right in the face and i just can't see it.

Kind Regards
Chris

 

[Victor]

Hello Chris,

Thank you for writing.
 
The indexer of RadTreeNodeCollection searches the nodes' Text property. If you want to search by Name or by Tag you will have to implement a recursive method. Setting the SelectedNode is the way to highlight a node, you are on the right track but you have to mind the quirk I mentioned above.
 
Write again if you need further assistance.

Best wishes,
Victor
the Telerik team

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[Chris]

Hi Victor,

Do you have an example..?

Am i on the right line in thinking i have to step through the tree recursively until i find a text match, then set this node a selected..??

Thankyou for your Prompt reply...

Regards
Chris

[Victor]

Hi Chris,

Here is an example:
 

RadTreeNode FindNode(RadTreeNodeCollection nodes, string text)
{
    foreach (RadTreeNode n in nodes)
    {
        if (n.Text == text)
        {
            return n;
        }
    }

    foreach (RadTreeNode n in nodes)
    {
        RadTreeNode foundNode = FindNode(n.Nodes, text);
        if (foundNode != null)
        {
            return foundNode;
        }
    }

    return null;
}

Write again if you need further assistance.

All the best,
Victor
the Telerik team

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