■ FileOpenPicker 클래스의 PickSingleFileAsync 메소드를 사용해 이미지 파일을 선택하는 방법을 보여준다.
▶ WindowHelper.cs
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using System.Collections.Generic; using Microsoft.UI.Xaml; using Microsoft.UI.Xaml.Media; namespace TestProject { /// <summary> /// 윈도우 헬퍼 /// </summary> public class WindowHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 활성 윈도우 리스트 /// </summary> private static List<Window> _activeWindowList = new List<Window>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 루트 테마 - RootTheme /// <summary> /// 루트 테마 /// </summary> public static ElementTheme RootTheme { get { foreach(Window window in _activeWindowList) { if(window.Content is FrameworkElement rootElement) { return rootElement.RequestedTheme; } } return ElementTheme.Default; } } #endregion #region 활성 윈도우 리스트 - ActiveWindowList /// <summary> /// 활성 윈도우 리스트 /// </summary> public static List<Window> ActiveWindowList { get { return _activeWindowList; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 윈도우 추적하기 - TrackWindow(window) /// <summary> /// 윈도우 추적하기 /// </summary> /// <param name="window">윈도우</param> public static void TrackWindow(Window window) { window.Closed += (sender, e) => { _activeWindowList.Remove(window); }; _activeWindowList.Add(window); } #endregion #region 윈도우 생성하기 - CreateWindow() /// <summary> /// 윈도우 생성하기 /// </summary> /// <returns>윈도우</returns> public static Window CreateWindow() { Window window = new Window { SystemBackdrop = new MicaBackdrop() }; TrackWindow(window); return window; } #endregion #region 엘리먼트를 위한 윈도우 구하기 - GetWindowForElement(element) /// <summary> /// 엘리먼트를 위한 윈도우 구하기 /// </summary> /// <param name="element">엘리먼트</param> /// <returns>윈도우</returns> public static Window GetWindowForElement(UIElement element) { if(element.XamlRoot != null) { foreach(Window window in _activeWindowList) { if(element.XamlRoot == window.Content.XamlRoot) { return window; } } } return null; } #endregion } } |
▶ MainWindow.xaml
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<?xml version="1.0" encoding="utf-8"?> <Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="TestProject"> <Frame Name="frame" /> </Window> |
▶ MainWindow.xaml.cs
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using Microsoft.UI.Xaml; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public sealed partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); WindowHelper.TrackWindow(this); } #endregion } } |
▶ MainPage.xaml
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<?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" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" FontFamily="나눔고딕코딩" FontSize="16"> <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Orientation="Horizontal"> <Button Name="openFileButton" HorizontalAlignment="Center" Padding="10" Content="Open File" /> <TextBlock Name="outputTextBlock" VerticalAlignment="Center" Margin="10 0 0 0" TextWrapping="Wrap" /> </StackPanel> </Page> |
▶ MainPage.xaml.cs
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using System; using Windows.Storage; using Windows.Storage.Pickers; using WinRT.Interop; using Microsoft.UI.Text; using Microsoft.UI.Xaml; using Microsoft.UI.Xaml.Controls; using Microsoft.UI.Xaml.Documents; namespace TestProject { /// <summary> /// 메인 페이지 /// </summary> public sealed partial class MainPage : Page { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.openFileButton.Click += openFileButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region Open File 버튼 클릭시 처리하기 - openFileButton_Click(sender, e) /// <summary> /// Open File 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void openFileButton_Click(object sender, RoutedEventArgs e) { this.outputTextBlock.Text = ""; FileOpenPicker fileOpenPicker = new FileOpenPicker(); Window window = WindowHelper.GetWindowForElement(this); IntPtr windowHandle = WindowNative.GetWindowHandle(window); InitializeWithWindow.Initialize(fileOpenPicker, windowHandle); fileOpenPicker.ViewMode = PickerViewMode.Thumbnail; fileOpenPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary; fileOpenPicker.FileTypeFilter.Add(".jpg" ); fileOpenPicker.FileTypeFilter.Add(".jpeg"); fileOpenPicker.FileTypeFilter.Add(".png" ); StorageFile storageFile = await fileOpenPicker.PickSingleFileAsync(); if(storageFile != null) { Span span = new Span(); Run run1 = new Run(); run1.Text = "Picked photo : "; Run run2 = new Run(); run2.FontWeight = FontWeights.Bold; run2.Text = storageFile.Name; span.Inlines.Add(run1); span.Inlines.Add(run2); this.outputTextBlock.Inlines.Add(span); } else { this.outputTextBlock.Text = "Operation cancelled."; } } #endregion } } |
