test/CircleViewerMaui/MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:pdfViewer="http://schemas.syncfusion.com/maui"
             x:Class="CircleViewerMaui.MainPage">

    <ContentPage.MenuBarItems>
        <MenuBarItem Text="File">
            <MenuFlyoutItem Text="Open" Clicked="onOpenClicked"/>
        </MenuBarItem>
    </ContentPage.MenuBarItems>
    <ContentPage.Content>
        <pdfViewer:SfPdfViewer x:Name="PdfViewer" VerticalOptions="Fill">
        </pdfViewer:SfPdfViewer>
    </ContentPage.Content>
</ContentPage>