UWP:从后台任务请求剪贴板访问

Question

我开发了一个应用程序，该应用程序将内容从后台任务粘贴到剪贴板。

public sealed class ToastBackgroundTask : IBackgroundTask {
    public void Run(IBackgroundTaskInstance taskInstance) {
        //Inside here developer can retrieve and consume the pre-defined 
        //arguments and user inputs;
        var toastArgs = taskInstance.TriggerDetails as ToastNotificationActionTriggerDetail;
        var argument = toastArgs.Argument;
        SetClipbordContent(toastArgs.Argument);
    }
    public static void SetClipbordContent(string text) {
        var dataPackage = new DataPackage();
        dataPackage.SetText(text);
        Clipboard.SetContent(dataPackage);
    }
}

但是当我执行该行时

Clipboard.SetContent(dataPackage);

提出以下解释：

The activation of a single-threaded class from MTA is not supported.
(Exception from HRESULT: 0x8000001D)

在经典的.Net Framework中处理此secario的常用解决方法是使用Thread类在STA上下文中执行这部分代码（C# Clipboard.GetText（）），但我不知道如何在UWP中执行此操作。

Answer 1

我过去曾使用它从后台线程在 UI 线程上执行......

await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, async () => {
    // Do something...
}

Answer 2

基于@Edd答案的完整答案：

using Windows.ApplicationModel.Core;
using Windows.UI.Core;
...
public static void SetClipbordContent(string text) {
    await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
                    {
                        DataPackage dataPackage = new DataPackage();
                        dataPackage.RequestedOperation = DataPackageOperation.Copy;
                        dataPackage.SetText(text);
                        Clipboard.SetContent(dataPackage);
                    });
}