在 WPF 应用程序中使用 UWP UI [英] Use UWP UI in WPF Application
问题描述
我有一个在后台运行的应用程序,但我想添加一个带有 UWP API 的窗口.
I have an application which runs in the background, but i wanted to add a Window with the UWP API.
添加引用后:
Windows.UI
Windows.UI.Xaml
我尝试使用以下命令启动 UWP 应用程序:
I tried to start the UWP application with:
Windows.UI.Xaml.Application.Start(p => new UWPApp(); );
在 UWPApp 类中我添加了 UWP 模板代码:
In the UWPApp class i added the UWP template code:
using System;
using System.Diagnostics;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;
namespace ClipboardSync {
public class UWPApp : Windows.UI.Xaml.Application {
private bool _contentLoaded;
public void InitializeComponent() {
if (_contentLoaded)
return;
_contentLoaded = true;
}
public UWPApp() {
this.InitializeComponent();
this.Suspending += OnSuspending;
}
protected override void OnLaunched(LaunchActivatedEventArgs e) {
Frame rootFrame = Window.Current.Content as Frame;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null) {
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
rootFrame.NavigationFailed += OnNavigationFailed;
if (e.PreviousExecutionState == ApplicationExecutionState.Terminated) {
//TODO: Load state from previously suspended application
}
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
if (e.PrelaunchActivated == false) {
if (rootFrame.Content == null) {
// When the navigation stack isn't restored navigate to the first page,
// configuring the new page by passing required information as a navigation
// parameter
rootFrame.Navigate(typeof(MainPage), e.Arguments);
}
// Ensure the current window is active
Window.Current.Activate();
}
}
/// <summary>
/// Invoked when Navigation to a certain page fails
/// </summary>
/// <param name="sender">The Frame which failed navigation</param>
/// <param name="e">Details about the navigation failure</param>
void OnNavigationFailed(object sender, NavigationFailedEventArgs e) {
throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
}
/// <summary>
/// Invoked when application execution is being suspended. Application state is saved
/// without knowing whether the application will be terminated or resumed with the contents
/// of memory still intact.
/// </summary>
/// <param name="sender">The source of the suspend request.</param>
/// <param name="e">Details about the suspend request.</param>
private void OnSuspending(object sender, SuspendingEventArgs e) {
var deferral = e.SuspendingOperation.GetDeferral();
//TODO: Save application state and stop any background activity
deferral.Complete();
}
}
}
但从未创建新的 UWPApp 实例并且没有错误消息.
but the new UWPApp Instance is never created and there is no error message.
是否有某种限制使我无法在 WPF 应用程序中启动 UWP 应用程序?
Is there some kind of restriction so that I can't start a UWP Application inside a WPF App?
推荐答案
UPDATE 1/31/2019回到这个来更新我的答案.从 Windows 10 更新 1809(内部版本 17763+)开始,现在支持此功能.更多信息和示例在这里:https://blogs.windows.com/buildingapps/2018/11/02/xaml-islands-a-deep-dive-part-1/
UPDATE 1/31/2019 Coming back to this to update my answer. As of Windows 10 update 1809 (build 17763+) this is now supported. More information and samples here: https://blogs.windows.com/buildingapps/2018/11/02/xaml-islands-a-deep-dive-part-1/
旧答案 - 1809 年之前这在今天不受支持.Windows.UI.XAML.* 目前只能在 UWP 应用进程中使用.
Old answer - pre-1809 This is not supported today. Windows.UI.XAML.* can currently only be used in UWP app processes.
但是,在今年早些时候的 BUILD2017 上宣布计划在未来的 Windows 10 更新中对此提供支持:
However, at BUILD2017 earlier this year it was announced that support for this is planned in a future update of Windows 10:
https://channel9.msdn.com/Events/Build/2017/B8100
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