Basically the RadRotator
control has been designed to rotate more than one item. In your case you have loaded only one item in the rotator control - а string content. When this item is shown the RadRotator
does not restart - it just continues showing this item.
As an alternative of your approach for data binding I suggest you to use the approaches described in this
help page. Additionally you should set the appropriate values for the Height, ItemHeight, Width, ItemWidth
I hope this helps.
All the best,
the Telerik team