c# - 如何在 uwp 中编程几种尺寸的屏幕？

Question

嗨，我正在通用 Windows 10 应用程序平台上开发应用程序，当我在 XAML 窗口上放置一些对象并更改屏幕尺寸时，它会保持以前的状态，因此它适合新的屏幕尺寸，如果我修复它，它就适合旧屏幕尺寸，我需要该应用程序是通用的。

我的xml代码：

<Page
x:Class="App17.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App17"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">

<Grid Loaded="Grid_Loaded">

    <Grid.Background>
        <ImageBrush Stretch="UniformToFill" ImageSource="Assets/backPHONE.jpg"/>
    </Grid.Background>
    <Grid.RowDefinitions>
        <RowDefinition Height="55*"/>
        <RowDefinition Height="9*"/>
    </Grid.RowDefinitions>
    <RelativePanel>
    <TextBlock x:Name="textBlock" HorizontalAlignment="Left" Margin="41,155,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Height="128" Width="360" Text="test 123" FontFamily="Century Gothic" FontStretch="UltraExpanded" FontStyle="Italic" FontSize="26" Tapped="textBlock_Tapped" TextAlignment="Center"/>
    <ComboBox x:Name="comboBox" HorizontalAlignment="Left" Margin="84,700,0,-666.8" VerticalAlignment="Top" Width="264" SelectionChanged="comboBox_SelectionChanged" Height="32" Grid.Row="1">
        <ComboBoxItem Content="test" IsSelected="True"/>
    </ComboBox>
    <TextBlock x:Name="textBlock2" HorizontalAlignment="Left" Margin="164,675,-2.8,-665" TextWrapping="Wrap" Text="test" VerticalAlignment="Top" Height="20" Width="120" Grid.Row="1" SelectionHighlightColor="#FFF10000" FontFamily="Century Gothic"  FontSize="12" FontStretch="UltraExpanded" FontStyle="Italic" Foreground="White"/>
    </RelativePanel>
</Grid>

谢谢