CalculatorSample.xaml

<View:SampleLayout
    x:Class="SampleBrowser.Editors.Controls.Calculator.CalculatorSample"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:View="using:Common"
    xmlns:local="using:SampleBrowser.Editors.Controls.Calculator"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
       xmlns:Input="using:Syncfusion.UI.Xaml.Controls.Input"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    d:DesignHeight="300"
    d:DesignWidth="400">

    <View:SampleLayout.Sample>
        <ContentControl HorizontalAlignment="Center" VerticalAlignment="Center">
            <Viewbox MaxHeight="400" MaxWidth="300" Margin="20">
                
                <Input:SfCalculator x:Name="calculator" HorizontalAlignment="Center" VerticalAlignment="Center" HorizontalContentAlignment="Stretch" BorderThickness="1" BorderBrush="LightGray"/>
               
            </Viewbox>
        </ContentControl>
    </View:SampleLayout.Sample>
</View:SampleLayout>