AppShell の初期状態

AppShell.xaml

<?xml version="1.0" encoding="UTF-8" ?>
<Shell
    x:Class="MauiApp5.AppShell"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:MauiApp5"
    Shell.FlyoutBehavior="Disabled">

    <ShellContent
        Title="Hello, World!"
        ContentTemplate="{DataTemplate local:MainPage}"
        Route="MainPage" />

</Shell>