public override bool OnSelected(UITabSelector selector, bool forward) { //Enable selector tabSelector.SetAsPrimarySelector(); //Have it select next element, if it defaults to no selection if (tabSelector.resetPositionWhenEnabled) { if (forward) { tabSelector.SelectElement(0, 0, true); } else { tabSelector.SelectElement(tabSelector.MaxRows() - 2, tabSelector.MaxColumns() - 1, false); } } //Return true to disable previous selector return(true); }