我已经使用 Prism 6 实现了 Word 2016 的任务窗格。从该任务窗格中我需要显示一个模式窗口，因此我实现了 prism 自定义交互。窗口是从绑定到委托命令的按钮开始的。在第一次单击时，一切都按预期工作，但是在第二次单击时出现异常。开发环境：VS2015，Office 2016，Windows 10 希望有人能指出我正确的方向。这里有一些更详细的信息：
System.InvalidOperationException occurred
HResult=-2146233079
Message=Das Anwendungsobjekt wird beendet.
Source=PresentationFramework
StackTrace:
bei System.Windows.Application.GetResourcePackage(Uri packageUri)
bei System.Windows.Application.GetResourceOrContentPart(Uri uri)
bei System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
bei Prism.Interactivity.DefaultPopupWindows.DefaultWindow.InitializeComponent()
bei Prism.Interactivity.PopupWindowAction.CreateWindow()
bei Prism.Interactivity.PopupWindowAction.GetWindow(INotification notification)
bei Prism.Interactivity.PopupWindowAction.Invoke(Object parameter)
bei System.Windows.Interactivity.TriggerBase.InvokeActions(Object parameter)
bei System.Windows.Interactivity.EventTriggerBase.OnEvent(EventArgs eventArgs)
bei System.Windows.Interactivity.EventTriggerBase.OnEventImpl(Object sender, EventArgs eventArgs)
bei Prism.Interactivity.InteractionRequest.InteractionRequest`1.Raise(T context, Action`1 callback)
bei Prism.Interactivity.InteractionRequest.InteractionRequest`1.Raise(T context)
bei PostOffice.WordPlugIn.ViewModels.TaskPaneViewmodel.OnShowConfirmationClick() in C:\GIT\eZustellung\PostOffice\PostOffice.WordPlugIn\ViewModels\TaskPaneViewmodel.cs:Zeile 39.
触发：
<!-- Interactions -->
<i:Interaction.Triggers>
<!-- All the InteractionRequestTriggers here subscribe to the corresponding interaction requests through simple bindings -->
<!-- In this case all of them raise a PopupWindowAction, but you can use other actions too -->
<prism:InteractionRequestTrigger SourceObject="{Binding NewDeliveryRequest, Mode=OneWay}">
<!-- This PopupWindowAction does not have a custom view defined, therefore it will try to use a DefaultNotificationWindow -->
<!-- which is a window used by default by Prism to shown INotification implementations -->
<!-- That window will be show as a modal dialog and centered over this window -->
<prism:PopupWindowAction WindowStartupLocation="CenterScreen">
<prism:PopupWindowAction.WindowContent>
<newdelivery:NewDeliveryWordView />
</prism:PopupWindowAction.WindowContent>
</prism:PopupWindowAction>
</prism:InteractionRequestTrigger>
</i:Interaction.Triggers>
提高通知：
private void OnShowConfirmationClick()
{
NewDeliverNotifcation notifcation = new NewDeliverNotifcation();
notifcation.Title = "New Delivery";
Ergebnis = "";
NewDeliveryRequest.Raise(notifcation,callback);
}
private void callback(NewDeliverNotifcation obj)
{
Ergebnis = obj.OK ? "Super" : "Not super";
}
自定义确认视图模型：
public class NewDeliveryWordViewmodel : NewDeliveryBaseViewmodel, IInteractionRequestAware
{
private NewDeliverNotifcation notification;
public NewDeliveryWordViewmodel()
{
ContinueCommand = new DelegateCommand(OnContinueClick);
CancelCommand = new DelegateCommand(OnCancelClick);
}
private void OnCancelClick()
{
notification.OK = false;
FinishInteraction();
}
private void OnContinueClick()
{
notification.OK = true;
FinishInteraction();
}
public DelegateCommand CancelCommand { get; private set; }
public DelegateCommand ContinueCommand { get; private set; }
public Action FinishInteraction { get; set; }
public INotification Notification
{
get
{
return notification;
}
set
{
if(value is NewDeliverNotifcation)
{
notification = value as NewDeliverNotifcation;
OnPropertyChanged(() => this.Notification);
}
}
}
}