@DHAGZ That depends. If you want the first item to be selected when the screen becomes visible put it in the OnVisible() of the screen. If you want it when a button is clicked, put it in the OnSelect() of the button.
@DHAGZ Select(yourGalleryName,1) selects the 1st record, if there is any. The data inside the gallery depends on the Items property of your Gallery. What do you have in the Items property?
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