Hi all,

Could you please add the OnBeforeActiveTabIndexChange event and allow cancellation (prevent) of ActiveTabIndexChanged in the handler?

I saw an example in the doc about how to prevent tab (index) change, but it is not sufficient because of:

- event if you won't change the tab index, the active tab is still being destroyed and recreated;

- we want to avoid keeping the tab in memory by using the PersistTabContent flag;

 We need to prevent tab switching by showing the user a confirmation and reacting to the user's choice. We need to prevent the tab switching - not to post react and apply any kind of crutches.