.NET MAUIでポップアップで文字入力ができるDisplayPromptAsyncを試す

<?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"
             x:Class="SampleLabel2.MainPage">

    <ScrollView>
        <VerticalStackLayout
            Spacing="25"
            Padding="30,0"
            VerticalOptions="Center">

            <HorizontalStackLayout
                Spacing="25"
                Padding="30,0"
                HorizontalOptions="Center">
                    <Label
                    x:Name="MemoLbl"
                    FontSize="24"
                    Text="メモ"
                    HorizontalOptions="Center" />

                <Button
                    x:Name="EditMemoBtn"
                    Text="編集"
                    Clicked="OnEditMemoBtnClicked"
                    HorizontalOptions="Center" />
            </HorizontalStackLayout>
        </VerticalStackLayout>
    </ScrollView>

</ContentPage>

namespace SampleLabel2;

public partial class MainPage : ContentPage
{
    public MainPage()
    {
        InitializeComponent();
    }

    private async void OnEditMemoBtnClicked(object sender, EventArgs e)
    {
        string memo = MemoLbl.Text;
        string result = await DisplayPromptAsync("タイトル", "メッセージ",initialValue: memo);
        if (result != null)
        {
            MemoLbl.Text = result;
        }
    }
}