Hi everyone,

I have a treelist filled in virtual mode. When I expand a node, I want to show a popup that reports the number of children of selected node. I have written this code:

 Node Expanding Event:

function(s, e) {
 children =  treeList.PerformCustomDataCallback(e.nodeKey);
 if (parseInt(children) > 200)
    e.procressOnServer = confirm('are you sure?');
}

Custom Data CallBack:

function(s, e) {
 children = e.result;

 return children;
}

Server event:

protected

void ASPxTreeList1_CustomDataCallback(object sender, TreeListCustomDataCallbackEventArgs e) {

string a = e.Argument;

e.Result = 800;

}

This code doesn't work because the 'children' item is alaways undefined. Can you help me?

Thanks,

Laura