MainPage.xaml 1 <Grid x:Name="LayoutRoot" Background="White">2 <Border BorderThickness="2" BorderBrush="Black" />3 <Grid ShowGridLines="True">4 <Grid.RowDefinitions>5 <RowDefinition/>6 <RowDefinition Height="50"/>7 <RowDefinition Height="50"/>8 <RowDefinition Height="50"/>9 </Grid.RowDefinition...