[C#/MAUI/.NET6] MaxLengthReachedBehavior 클래스 : Command 속성을 사용해 사용자가 최대 길이 입력시 처리하기

TestProject.zip

0.15MB

▶ MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml">
    <Entry x:Name="entry"
        HorizontalOptions="Center"
        VerticalOptions="Center"
        BackgroundColor="Yellow"
        MaxLength="20"
        Placeholder="최대 길이로 입력할 때가 타이핑을 해주시기 바랍니다." />
</ContentPage>

 

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▶ MainPage.xaml.cs

using System.Windows.Input;

using CommunityToolkit.Maui.Behaviors;

namespace TestProject;

/// <summary>
/// 메인 페이지
/// </summary>
public partial class MainPage : ContentPage
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Property
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 최대 길이 도달시 명령 - MaximumLengthReachedCommand

    /// <summary>
    /// 최대 길이 도달시 명령
    /// </summary>
    public ICommand MaximumLengthReachedCommand { get; set; }

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 생성자 - MainPage()

    /// <summary>
    /// 생성자
    /// </summary>
    public MainPage()
    {
        InitializeComponent();

        MaximumLengthReachedCommand = new Command
        (
            execute : async () =>
            {
                await DisplayAlert("INFORMATION", "최대 길이까지 입력했습니다.", "확인");
            }
        );

        MaxLengthReachedBehavior behavior = new MaxLengthReachedBehavior();

        behavior.SetBinding
        (
            MaxLengthReachedBehavior.CommandProperty,
            new Binding(nameof(MaximumLengthReachedCommand))
        );

        this.entry.Behaviors.Add(behavior);

        BindingContext = this;
    }

    #endregion
}

 

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▶ MauiProgram.cs

using CommunityToolkit.Maui;

namespace TestProject;

/// <summary>
/// MAUI 프로그램
/// </summary>
public static class MauiProgram
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Static
    //////////////////////////////////////////////////////////////////////////////// Public

    #region MAUI 앱 생성하기 - CreateMauiApp()

    /// <summary>
    /// MAUI 앱 생성하기
    /// </summary>
    /// <returns>MAUI 앱</returns>
    public static MauiApp CreateMauiApp()
    {
        MauiAppBuilder builder = MauiApp.CreateBuilder();

        builder
            .UseMauiApp<App>()
            .UseMauiCommunityToolkit()
            .ConfigureFonts
            (
                fontCollection =>
                {
                    fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" );
                    fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
                }
            );

        return builder.Build();
    }

    #endregion
}