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■ InvokeCommandAction 클래스 : 이벤트에 반응해 명령 호출하기

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TestProject.zip



MainWindow.xaml

 

 

<Window x:Class="TestProject.Views.MainWindow"

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

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

    xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

    xmlns:prism="http://prismlibrary.com/"

    prism:ViewModelLocator.AutoWireViewModel="True"

    Width="800"

    Height="600"

    Title="{Binding Title}"

    FontFamily="나눔고딕코딩"

    FontSize="16">

    <Grid>

        <Grid.RowDefinitions>

            <RowDefinition Height="Auto" />

            <RowDefinition Height="*"    />

            <RowDefinition Height="Auto" />

        </Grid.RowDefinitions>

        <StackPanel Grid.Row="0">

            <TextBlock

                Margin="5"

                FontSize="24"

                Foreground="DarkRed"

                TextWrapping="Wrap"

                Text="InvokeCommandAction" />

            <TextBlock

                Margin="5"

                TextWrapping="Wrap">

                The <Bold>InvokeCommandAction</Bold> is useful when you need to invoke a command

                in response to an event raised by a control in the view.

            </TextBlock>

            <TextBlock

                Margin="5"

                TextWrapping="Wrap">

                In the following example there is a list of items and we want to execute a command

                in the view model when an item is selected.

                The view model will then change the "Selected Item" shown below.

            </TextBlock>

        </StackPanel>

        <ListBox Grid.Row="1"

            Margin="5"

            SelectionMode="Single"

            ItemsSource="{Binding Items}">

            <i:Interaction.Triggers>

                <i:EventTrigger EventName="SelectionChanged">

                    <prism:InvokeCommandAction

                        Command="{Binding SelectCommand}"

                        TriggerParameterPath="AddedItems" />

                </i:EventTrigger>

            </i:Interaction.Triggers>

        </ListBox>

        <StackPanel Grid.Row="2"

            Margin="5"

            Orientation="Horizontal">

            <TextBlock

                Foreground="DarkRed"

                FontWeight="Bold"

                Text="Selected Item" />

            <TextBlock

                Margin="5, 0"

                AutomationProperties.AutomationId="SelectedItemTextBlock"

                Foreground="DarkRed"

                FontWeight="Bold"

                Text="{Binding SelectedItemText}" />

        </StackPanel>

    </Grid>

</Window>

 

 

MainWindow.xaml.cs

 

 

using System.Windows;

 

namespace TestProject.Views

{

    /// <summary>

    /// 메인 윈도우

    /// </summary>

    public partial class MainWindow : Window

    {

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

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

 

        #region 생성자 - MainWindow()

 

        /// <summary>

        /// 생성자

        /// </summary>

        public MainWindow()

        {

            InitializeComponent();

        }

 

        #endregion

    }

}

 

 

MainWindowViewModel.cs

 

 

using System.Collections.Generic;

using System.Linq;

 

using Prism.Commands;

using Prism.Mvvm;

 

namespace TestProject.ViewModels

{

    /// <summary>

    /// 메인 윈도우 뷰

    /// </summary>

    public class MainWindowViewModel : BindableBase

    {

        //////////////////////////////////////////////////////////////////////////////////////////////////// Field

        ////////////////////////////////////////////////////////////////////////////////////////// Private

 

        #region Field

 

        /// <summary>

        /// 제목

        /// </summary>

        private string title = "InvokeCommandAction 클래스 : 이벤트에 반응해 명령 호출하기";

 

        /// <summary>

        /// 선택 항목 텍스트

        /// </summary>

        private string selectedItemText;

 

        #endregion

 

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

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

 

        #region 제목 - Title

 

        /// <summary>

        /// 제목

        /// </summary>

        public string Title

        {

            get

            {

                return this.title;

            }

            set

            {

                SetProperty(ref this.title, value);

            }

        }

 

        #endregion

        #region 선택 항목 텍스트 - SelectedItemText

 

        /// <summary>

        /// 선택 항목 텍스트

        /// </summary>

        public string SelectedItemText

        {

            get

            {

                return this.selectedItemText;

            }

            private set

            {

                SetProperty(ref this.selectedItemText, value);

            }

        }

 

        #endregion

        #region 항목 리스트 - Items

 

        /// <summary>

        /// 항목 리스트

        /// </summary>

        public IList<string> Items { get; private set; }

 

        #endregion

        #region 선택 명령 - SelectCommand

 

        /// <summary>

        /// 선택 명령

        /// </summary>

        public DelegateCommand<object[]> SelectCommand { get; private set; }

 

        #endregion

 

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

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

 

        #region 생성자 - MainWindowViewModel()

 

        /// <summary>

        /// 생성자

        /// </summary>

        public MainWindowViewModel()

        {

            Items = new List<string>();

 

            Items.Add("Item1");

            Items.Add("Item2");

            Items.Add("Item3");

            Items.Add("Item4");

            Items.Add("Item5");

 

            SelectCommand = new DelegateCommand<object[]>(Select);

        }

 

        #endregion

 

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

        ////////////////////////////////////////////////////////////////////////////////////////// Private

 

        #region 선택하기 - Select(selectedItemArray)

 

        /// <summary>

        /// 선택하기

        /// </summary>

        /// <param name="selectedItemArray">선택 항목 배열</param>

        private void Select(object[] selectedItemArray)

        {

            if(selectedItemArray != null && selectedItemArray.Count() > 0)

            {

                SelectedItemText = selectedItemArray.FirstOrDefault().ToString();

            }

        }

 

        #endregion

    }

}

 

 

MainApplication.xaml

 

 

<prism:PrismApplication x:Class="TestProject.MainApplication"

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

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

    xmlns:prism="http://prismlibrary.com/">

</prism:PrismApplication>

 

 

MainApplication.xaml.cs

 

 

using System.Windows;

 

using Prism.Ioc;

using Prism.Unity;

 

using TestProject.Views;

 

namespace TestProject

{

    /// <summary>

    /// 메인 애플리케이션

    /// </summary>

    public partial class MainApplication : PrismApplication

    {

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

        ////////////////////////////////////////////////////////////////////////////////////////// Protected

 

        #region 쉘 생성하기 - CreateShell()

 

        /// <summary>

        /// 쉘 생성하기

        /// </summary>

        /// <returns></returns>

        protected override Window CreateShell()

        {

            return Container.Resolve<MainWindow>();

        }

 

        #endregion

        #region 타입 등록하기 - RegisterTypes(containerRegistry)

 

        /// <summary>

        /// 타입 등록하기

        /// </summary>

        /// <param name="containerRegistry">컨테이너 레지스트리 인터페이스</param>

        protected override void RegisterTypes(IContainerRegistry containerRegistry)

        {

        }

 

        #endregion

    }

}

 

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Posted by 사용자 icodebroker
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