How to persist RadPanelBar's state when using Output Caching?
How to
Persist RadPanelBar's state when using Output Caching?
Persisting the RadPanelBar's state requires execution of a server-side code. This execution might be prevented by the output caching. To solve the problem you could use the client-side API of the control to find the panel item corresponding to the current URL and expand its parents.
Example
function pageLoad()
{
var currentUrl = window.location.href.toLowerCase();
var panelbar = $find("<%= RadPanelBar1.ClientID %>");
var currentItem = null;
var currentItemTemp = null;
for (var i = 0; i < panelbar.get_allItems().length; i++)
{
if (panelbar.get_allItems()[i].get_linkElement() &&
currentUrl.indexOf(panelbar.get_allItems()[i].get_linkElement().href.toLowerCase()) > -1)
{
currentItem = panelbar.get_allItems()[i];
currentItemTemp = currentItem;
break;
}
}
while (currentItem && currentItem.get_parent() != panelbar)
{
currentItem.get_parent().expand();
currentItem = currentItem.get_parent();
}
if (currentItemTemp)
{
currentItemTemp.select();
currentItemTemp.expand();
}
}