Building adaptive layout with RelativePanel - xaml

Question

hello I want that when the vision is less than 720 such as a phone, I would like the grid 2 went below the grid 1. I tried through its panel and adaptive trigger like this:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<RelativePanel >
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="VisualStateGroup">
<VisualState x:Name="NarrowView">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="Grid2.(RelativePanel.Below)" Value="Grid1"/>
<Setter Target="Grid1.(RelativePanel.Above)" Value="Grid2"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="WideView">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="720" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="Grid2.(RelativePanel.RightOf)" Value="Grid1"/>
<Setter Target="Grid1.(RelativePanel.LeftOf)" Value="Grid2"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid Grid.Column="0" x:Name="Grid1" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" FontSize="20" PlaceholderText="NOME" Style="{StaticResource ResourceKey=TextBoxStyle}"/>
</Grid>
<Grid Grid.Column="1" x:Name="Grid2">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" FontSize="17" Text="Note" Foreground="#222222" Margin="20,15" ></TextBlock>
<TextBox Grid.Row="2" MaxLength="0" FontSize="17" Height="500" PlaceholderText="AGGIUNGI NOTA" Style="{StaticResource ResourceKey=TextBoxStyle}"></TextBox>
</Grid>
</Grid>
</RelativePanel>
</Grid>
But it does not work.
Thank you

Answer 1

There are two things you need to fix:
1) To make VisualState works, place the VisualStateManager under the first child of root Grid:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<VisualStateManager.VisualStateGroups>
......
</VisualStateManager.VisualStateGroups>
......
</Grid>
2) You don't need to add Columns, just place your two Grids under RelativePanel:
<RelativePanel>
<Grid x:Name="Grid1">
......
</Grid>
<Grid x:Name="Grid2">
......
</Grid>
</RelativePanel>
The completed xaml code:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="VisualStateGroup">
<VisualState x:Name="NarrowView">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="Grid2.(RelativePanel.Below)" Value="Grid1"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="WideView">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="720" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="Grid2.(RelativePanel.RightOf)" Value="Grid1"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<RelativePanel>
<Grid x:Name="Grid1">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" FontSize="20" PlaceholderText="NOME" />
</Grid>
<Grid x:Name="Grid2">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" FontSize="17" Text="Note" Foreground="#222222" Margin="20,15" ></TextBlock>
<TextBox Grid.Row="2" MaxLength="0" FontSize="17" Height="500" PlaceholderText="AGGIUNGI NOTA" ></TextBox>
</Grid>
</RelativePanel>
</Grid>

Answer 2

i found a solution without relativePanel, if anyone care:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="VisualStateGroup">
<VisualState x:Name="NarrowView">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="text.(Grid.ColumnSpan)" Value="2" />
<Setter Target="text1.(Grid.ColumnSpan)" Value="2" />
<Setter Target="text2.(Grid.ColumnSpan)" Value="2" />
<Setter Target="text1.(Grid.Row)" Value="1" />
<Setter Target="text1.(Grid.Column)" Value="0" />
<Setter Target="text2.(Grid.Row)" Value="2" />
<Setter Target="text2.(Grid.Column)" Value="0" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="WideView">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="860" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="text.(Grid.ColumnSpan)" Value="1" />
<Setter Target="text1.(Grid.Row)" Value="0" />
<Setter Target="text1.(Grid.Column)" Value="1" />
<Setter Target="text2.(Grid.Row)" Value="1" />
<Setter Target="text2.(Grid.Column)" Value="1" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBox x:Name="text" PlaceholderText="NOME" />
<TextBlock x:Name="text1" Grid.Row="0" Grid.Column="1" Text="Note"></TextBlock>
<TextBox x:Name="text2" Grid.Row="1" Grid.Column="1" PlaceholderText="AGGIUNGI NOTA" ></TextBox>
</Grid>