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:myviews="clr-namespace:MauiCustomEntryHandler"
             x:Class="MauiCustomEntryHandler.MainPage">
			 
    <ScrollView>
        <VerticalStackLayout 
                WidthRequest="500" HeightRequest="400"
                Spacing="25" Padding="30,0" BackgroundColor="LightBlue"
                HorizontalOptions="Center" VerticalOptions="Center">
            <Label Text="Hello, Maui!" FontSize="24" HorizontalOptions="Center" />
            <myviews:MyEntry Text="test" FontSize="20" UnderlineThickness="8" UnderlineColor="Purple" BackgroundColor="HotPink" />
            <myviews:MyEntry UnderlineThickness="0" BackgroundColor="LightGray" />
        </VerticalStackLayout>
    </ScrollView>
 
</ContentPage>