show/hide nodes

[Andreas Kaech]

Hi Telerik,
my problem is a bit "off-topic" - but I'm interested in a efficient solution with "telerik functions":
For security reasons, I have to hide some nodes.
The problem is that I have only the show/hide information of the last node in a branch.
Now the question(s):
- How to hide/show nodes with something like node.get_parent()?
- Is a serverside approach the better one?

Thanks for answering,
Andreas

[Atanas Korchev]

Hello Andreas Kaech,

Hiding nodes on the client-side for security reasons may not be a good idea since malicious user can use the client-side API to show them back. Anyway you can use the set_visible(false) method to hide a node on the client-side. However I would recommend you hide the nodes from the server side.

Regards,
Albert
the Telerik team

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[Andreas Kaech]

Hi Albert,
I thought, that the serverside approach is the better one ;-) 
But how can I (recursively) hide/show nodes serverside - I remember, the only information, if a brunch is visible or not is in the last node of this brunch.

Sincerely,
Andreas

[Shinu]

Hello Andreas Kaech,

I guess you want to show/hide the last node of the RadTreeView on based on condition. I tried the recursive function for achieving this functionality. Try the below code snippets.

CS:

public bool value = true; //condition
protected void Button2_Click(object sender, EventArgs e)
{
    RadTreeNode node= (RadTreeNode)RadTreeView1.Nodes[0];
    hidenode(node);
}
//Recursive function to hide the node
public void hidenode(RadTreeNode node)
{
    if (node.Nodes.Count > 0)
    {
        for (int i = 0; i < node.Nodes.Count; i++)
        {
            hidenode(node.Nodes[i]);
        }
    }
    else
    {
        if (value) //check the condition, if you want it for each node
        {
            node.Visible = false; // hide the node
        }
    }
}

Thanks,
Shinu.