MainPage.xaml
<Page
x:Class="UniversalAppTutorials.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UniversalAppTutorials"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<StackPanel
x:Name="StackPanel1"
Margin="50"
Orientation="Vertical"
Background="AliceBlue"
Padding="50"
>
<!--- Resize symbol icon using ViewBox in XAML -->
<Viewbox MaxWidth="175" MaxHeight="175">
<SymbolIcon Symbol="Audio" Foreground="Crimson"/>
</Viewbox>
<Viewbox MaxWidth="100" MaxHeight="100" Margin="5,5,5,50">
<SymbolIcon Symbol="AttachCamera" Foreground="HotPink"/>
</Viewbox>
<!--- Another way to resize symbol icon in XAML -->
<SymbolIcon Symbol="Phone" RenderTransformOrigin="0.5,0.5" Foreground="Blue">
<SymbolIcon.RenderTransform>
<CompositeTransform ScaleX="5" ScaleY="5"/>
</SymbolIcon.RenderTransform>
</SymbolIcon>
</StackPanel>
</Page>
MainPage.xaml.cs
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml;
namespace UniversalAppTutorials
{
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
// Initialize a new Viewbox instance
Viewbox viewbox = new Viewbox();
// Set the Viewbox maximum width and height
// This will be the width and height of SymbolIcon
viewbox.MaxWidth = 200;
viewbox.MaxHeight = 200;
// Set the margin of Viewbox
viewbox.Margin = new Thickness(25);
// Initialize a new SymbolIcon instance
SymbolIcon symbolIcon = new SymbolIcon(Symbol.Video);
// Put the SymbolIcon inside Viewbox
viewbox.Child = symbolIcon;
// Finally, put the Viewbox on stack panel
// Programmatically create and resize SymbolIcon
StackPanel1.Children.Add(viewbox);
}
}
}

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