[C#/WINUI3/COMMUNITY TOOLKIT/.NET8] CallMethodAction 엘리먼트 : TargetObject/MethodName 속성을 사용해 특정 객체 작업 실행하기

■ CallMethodAction 엘리먼트의 TargetObject/MethodName 속성을 사용해 특정 객체의 작업을 실행하는 방법을 보여준다.

※ 비주얼 스튜디오에서 TestProject(Unpackaged) 모드로 빌드한다.
※ TestProject.csproj 프로젝트 파일에서 WindowsPackageType 태그를 None으로 추가했다.

▶ MainPage.xaml


<?xml version="1.0" encoding="utf-8"?>
<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mxi="using:Microsoft.Xaml.Interactivity"
    xmlns:mxic="using:Microsoft.Xaml.Interactions.Core"
    xmlns:ctwb="using:CommunityToolkit.WinUI.Behaviors"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <StackPanel
        HorizontalAlignment="Center"
        VerticalAlignment="Center"
        MaxWidth="480"
        Spacing="10">
        <TextBox PlaceholderText="Set the focus to this TextBox and press enter">
            <mxi:Interaction.Behaviors>
                <ctwb:KeyDownTriggerBehavior Key="Enter">
                    <mxic:CallMethodAction
                        TargetObject="{x:Bind}"
                        MethodName="IncrementCount" />
                </ctwb:KeyDownTriggerBehavior>
            </mxi:Interaction.Behaviors>
        </TextBox>
        <TextBlock>
            <Run Text="Enter pressed" />
            <Run FontWeight="SemiBold"
                 Text="{x:Bind Count, Mode=OneWay}" />
            <Run Text="times." />
        </TextBlock>
    </StackPanel>
</Page>

<?xml version="1.0" encoding="utf-8"?>

<Page x:Class="TestProject.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:mxi="using:Microsoft.Xaml.Interactivity"

xmlns:mxic="using:Microsoft.Xaml.Interactions.Core"

xmlns:ctwb="using:CommunityToolkit.WinUI.Behaviors"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"

FontFamily="나눔고딕코딩"

FontSize="16">

<StackPanel

HorizontalAlignment="Center"

VerticalAlignment="Center"

MaxWidth="480"

Spacing="10">

<mxi:Interaction.Behaviors>

<ctwb:KeyDownTriggerBehavior Key="Enter">

<mxic:CallMethodAction

TargetObject="{x:Bind}"

MethodName="IncrementCount" />

</ctwb:KeyDownTriggerBehavior>

</mxi:Interaction.Behaviors>

</TextBox>

<Run FontWeight="SemiBold"

Text="{x:Bind Count, Mode=OneWay}" />

</TextBlock>

</StackPanel>

</Page>

▶ MainPage.xaml.cs


using System.ComponentModel;

using Microsoft.UI.Xaml.Controls;

namespace TestProject;

/// <summary>
/// 메인 페이지
/// </summary>
public sealed partial class MainPage : Page, INotifyPropertyChanged
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Event
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 속성 변경시 이벤트 - PropertyChanged

    /// <summary>
    /// 속성 변경시 이벤트
    /// </summary>
    public event PropertyChangedEventHandler PropertyChanged;

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Property
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 카운트 - Count

    /// <summary>
    /// 카운트
    /// </summary>
    public int Count { get; set; }

    #endregion

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

    #region 생성자 - MainPage()

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

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 카운트 증가시키기 - IncrementCount()

    /// <summary>
    /// 카운트 증가시키기
    /// </summary>
    public void IncrementCount()
    {
        Count++;

        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Count)));
    }

    #endregion
}

using System.ComponentModel;

using Microsoft.UI.Xaml.Controls;

namespace TestProject;

/// <summary>

/// 메인 페이지

/// </summary>

public sealed partial class MainPage : Page, INotifyPropertyChanged

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Event

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 속성 변경시 이벤트 - PropertyChanged

/// <summary>

/// 속성 변경시 이벤트

/// </summary>

public event PropertyChangedEventHandler PropertyChanged;

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Property

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 카운트 - Count

/// <summary>

/// 카운트

/// </summary>

public int Count { get; set; }

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainPage()

/// <summary>

/// 생성자

/// </summary>

public MainPage()

{

InitializeComponent();

}

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 카운트 증가시키기 - IncrementCount()

/// <summary>

/// 카운트 증가시키기

/// </summary>

public void IncrementCount()

{

Count++;

PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Count)));

}

#endregion

}

TestProject.zip