Load On Demand Q1 2011

[erwin]

Is there a way I can force the + / expansion image on a node when the children are load on demand and I know that there will be existing child nodes.

[erwin]

Well I found a way using the follwing code in the NodeFormatting Event Handler

TreeNodeInfo info = e.Node.Tag as TreeNodeInfo;
if (info!=null)
{
    if (info.PotentialChildNodes > 0)
    {
        e.NodeElement.ExpanderElement.Visibility = ElementVisibility.Visible;
    }
}

where TreeNodeInfo is a custom class that stores additional info about the node.
This seems to work but now I get some extra space left of the node until I expand it for the first time.

[Julian Benkov]

Hi erwin,

Please find the answer in your support ticket.

All the best,
Julian Benkov
the Telerik team

[Graden Kirksey]

Can you please post the answer to this here so we can all see it. I have the same issue.

[Graden Kirksey]

Can someone PLEASE post the solution to this padding issue?  I am having the exact same issue, and if it has a solution, I would be very grateful if it was shared.

Thanks,
Graden

[erwin]

Hi Graden,

I opened a bug ticket and provided a demo project for that problem. I'll keep the forum posted about results if that's not done by telerik staff.  No workaround provided up until now.

Regards
Erwin

[Graden Kirksey]

Thank you very much!

g

[erwin]

As it seems the bug indent bug with the NodesFormatting event is not fixed in 2011.419.

I'll give the revised NodesNeeded Mechanism a try.

Erwin

[erwin]

NodesNeeded Event seems to work OK with 2011Q1SP1 with correct indent/padding of nodes.
However you'll have to tweak your loading logic slightly if you previously used the NodeExpanding Events.

Regards
Erwin

[Julian Benkov]

Hi Erwin,

I am glad to hear that you find the previously experienced issues addressed. Feel free if you have additional questions or feedback to share.

Regards,

Julian Benkov
the Telerik team