Question

我有支持ShareTarget将文件上传到云端的应用。当我的应用程序关闭时，一切都很有效（我的意思是关闭 - 不是休眠或类似的东西） - 我选择分享照片，并且每个人都按预期进行。但是当我打开应用程序，然后退出（应用程序在内存中休眠）并尝试在线共享内容

Window.Current.Activate();

我得到了

Exception thrown: 'System.InvalidCastException' in mscorlib.ni.dll
Message "Unable to cast COM object of type 'System.ComponentModel.PropertyChangedEventHandler' to class type 'System.ComponentModel.PropertyChangedEventHandler'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface."

然后我的应用程序完全关闭，第二次尝试成功。整个onShareTarget代码：

protected override void OnShareTargetActivated(ShareTargetActivatedEventArgs args)
{
    if (!args.ShareOperation.Data.Contains(
        Windows.ApplicationModel.DataTransfer.StandardDataFormats.StorageItems))
        return;
    AppShell shell = Window.Current.Content as AppShell;
    if (shell == null)
        shell = new AppShell();
    Window.Current.Content = shell;
    shell.AppFrame.Navigate(typeof(ChooseFolderPage), args.ShareOperation);
    Window.Current.Activate();
}

任何想法如何解决？

ShareTarget上的InvalidCastException [Windows 10 UWP]

0 个答案: