When I use the default templates in Windows 8 Store apps for an item grid, I get some nifty transitions when the source of the collection is set. How can I remove these transiti
You can remove them by overriding the ItemContainerTransitions. If you add the following style to the page resources:-
Then set the style of your gridview to NoAnimations:
That should take care of it for you. If you don't want to loose all of the animations then you can add some of them back - here is a list of the default animations on the gridview:-