Hi Bruno Michels,
Set the mode explicitly or return the value of BehviorMode property in CreateChildControls before calling the base.
.BehaviorMode = BehaviorModes.Detail;
The Details mode is used when you want to show a single item, s you should set the id of an item or you should have another NewsView control that adds the item ID to the QueryString.
The control uses url rewriting and Rource cannot be found.
means that you have not set item to display or te url to the item is not correct.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.