MainPage.xaml

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="XPlat.MainPage"
             BackgroundColor="{DynamicResource SecondaryColor}">

    <ScrollView>
        <Grid RowSpacing="25" RowDefinitions="Auto,Auto,Auto,*"
              Padding="{OnPlatform iOS='30,60,30,30', Default='30'}">

            <Label 
                Text="Welcome to User Sign In .NET Multi-platform App UI"
                Grid.Row="0"
                SemanticProperties.HeadingLevel="Level1"
                SemanticProperties.Description="Welcome to dot net Multi platform App UI"
                FontSize="32"
                HorizontalOptions="Center" />

            <Button 
                Text="Sign In (If needed) &amp; Call Graph"
                IsVisible="True"
                FontAttributes="Bold"
                Grid.Row="1"
                SemanticProperties.Hint="Click to Sign In with your work or school account"
                Clicked="OnSignInClicked"
                x:Name="SignInButton"
                HorizontalOptions="Center" />
            <Grid RowSpacing="25" RowDefinitions="Auto,Auto,Auto,Auto,*"
                Row="2"
                x:Name="AuthenticatedGrid"
                IsVisible="false">
                <Label 
                    Grid.Row="0"
                    FontSize="18"
                    FontAttributes="Bold"
                    Text="Microsoft Graph Response:"
                    HorizontalOptions="Center" />

                <Label 
                    Grid.Row="1"
                    FontSize="18"
                    FontAttributes="Bold"
                    x:Name="GraphResultsLabel"
                    HorizontalOptions="Center" />

                <Label 
                    Grid.Row="2"
                    FontSize="18"
                    FontAttributes="Bold"
                    x:Name="AccessTokenSourceLabel"
                    HorizontalOptions="Center" />

                <Button 
                    Text="Sign Out"
                    FontAttributes="Bold"
                    Grid.Row="3"
                    SemanticProperties.Hint="Click to Sign Out with your work or school account"
                    Clicked="OnSignOutClicked"
                    x:Name="SignOutButton"
                    HorizontalOptions="Center" />
            </Grid>
        </Grid>
    </ScrollView>
</ContentPage>