[C#/UWP] MessageDialog 클래스 사용하기 (비동기 취소하기)

▶ MainPage.xaml

<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:TestProject"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">
    <Grid Name="contentGrid"
        Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
        <Button
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Content="메시지 대화 상자 표시하기"
            Click="button_Click" />
    </Grid>
</Page>

 

728x90

 

▶ MainPage.xaml.cs

using System;
using Windows.Foundation;
using Windows.UI;
using Windows.UI.Popups;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;

namespace TestProject
{
    /// <summary>
    /// 메인 페이지
    /// </summary>
    public sealed partial class MainPage : Page
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// 비동기 작업
        /// </summary>
        private IAsyncOperation<IUICommand> asyncOperation;

        #endregion

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

        #region 생성자 - MainPage()

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

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 버튼 클릭시 처리하기 - button_Click(sender, e)

        /// <summary>
        /// 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private async void button_Click(object sender, RoutedEventArgs e)
        {
            MessageDialog messageDialog = new MessageDialog("색상을 선택해 주시기 바랍니다.", "색상 선택");

            messageDialog.Commands.Add(new UICommand("빨강", null, Colors.Red  ));
            messageDialog.Commands.Add(new UICommand("녹색", null, Colors.Green));
            messageDialog.Commands.Add(new UICommand("파랑", null, Colors.Blue ));

            DispatcherTimer dispatcherTimer = new DispatcherTimer();

            dispatcherTimer.Interval = TimeSpan.FromSeconds(5);

            dispatcherTimer.Tick += dispatcherTimer_Tick;

            dispatcherTimer.Start();

            this.asyncOperation = messageDialog.ShowAsync();

            IUICommand uiCommand = null;

            try
            {
                uiCommand = await asyncOperation;
            }
            catch(Exception)
            {
            }

            dispatcherTimer.Stop();

            if(uiCommand == null)
            {
                return;
            }

            Color color = (Color)uiCommand.Id;

            this.contentGrid.Background = new SolidColorBrush(color);
        }

        #endregion

        #region 디스패처 타이머 틱 처리하기 - dispatcherTimer_Tick(sender, e)

        /// <summary>
        /// 디스패처 타이머 틱 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void dispatcherTimer_Tick(object sender, object e)
        {
            this.asyncOperation.Cancel();
        }

        #endregion
    }
}