public MainPage()
{
InitializeComponent();
var mainCollection = (ConstraintCollection)Resources["Constraints"];
var altCollection = (ConstraintCollection)Resources["AltConstraints"];
mainCollection.Add(PositionConstraint.CenterX(Toggle).ToCenterX(Layout));
mainCollection.Add(PositionConstraint.CenterY(Toggle).ToCenterY(Layout));
mainCollection.Add(DimensionConstraint.Width(Toggle, -20).ToWidth(Layout, 0.5f));
mainCollection.Add(DimensionConstraint.Height(Toggle, -20).ToHeight(Layout, 0.3f));
altCollection.Add(PositionConstraint.Left(Toggle).ToLeft(LeftLabel));
altCollection.Add(DimensionConstraint.Width(Toggle, 400));
altCollection.Add(PositionConstraint.Top(Toggle).ToBottom(BottomLabel));
altCollection.Add(PositionConstraint.Bottom(Toggle).ToBottom(Layout));
}