hi,
i but 5 RadGridview in RadTabControl when we have many TabItem ,the problem is for each selected TabItem  the event load is launch.
for me all  RadGridView is loaded in the first time when i load the view. 

my question:there is a possibilty to stop load when i select TabItem  ?
i find just a possibilty to keep the already selected TabItem ,is not a solution for my problem because i want to block all event load.
 
thanks

Hi Fatima,

When you select RadTabItem, the PreviewSelectionChanged event fires first and then comes the SelectionChanged event. You can perform some logic in the preview event and set e.handled = true so that the SelectionChanged is not fired.
On the other hand, how can you make so that not every GridView in your RadTabItems loads? You can use ContentTemplate like so:

This way if you bind the TabControl to collection of 5 business objects , only the first RadGridView will load. If static RadTabItems were used, all the 5 RadGridView would have been loaded initially. 
Please let us know if this helped you.

Greetings,
Petar Mladenov
the Telerik team

thanks for your answer ,it's helpful