我有一个使用具有棱镜的PopupWindowAction的交互对象的ShellView来显示我的自定义设置视图。我的ShellViewModel包含InteractionRequest对象和一个将触发用户交互的Delegate Command。用户触发交互后,自定义设置视图(DataFeedManagerView)将显示在ShellView的中心。在My DataFeedManagerView中,左侧有一个DataFeeds列表(ListBox控件),右侧有datafeed特定设置视图(ContentControl,通过RegionManager设置Region)。首先,我使用RegisterViewWithRegion注册了所有视图。然后我尝试做的是通过Region的Activate方法激活内容控件中的相关对象设置视图。当我尝试这样做时,我收到错误"找不到地区"。所以我们不能在自定义弹出窗口中使用区域???
PS1:也许这是如此简单的要求,但包含很多步骤,因为我的解释有点复杂。我希望代码更具描述性。
PS2:我对使用简单绑定到ContentControl的内容属性满足了期望。但我担心在自定义交互弹出窗口中使用区域的错误和/或正确解决方案是什么。
.. ::壳牌:: ..
<Window x:Class="PrismUnityApp.Views.ShellView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:views="clr-namespace:PrismUnityApp.Views"
xmlns:constants="clr-namespace:PrismUnityApp.Constants"
xmlns:prism="http://prismlibrary.com/"
prism:ViewModelLocator.AutoWireViewModel="True"
Title="{Binding Title}" Height="480" Width="640">
<DockPanel LastChildFill="True">
<i:Interaction.Triggers>
<prism:InteractionRequestTrigger SourceObject="{Binding ConfirmationRequest}">
<prism:PopupWindowAction IsModal="True" CenterOverAssociatedObject="True">
<prism:PopupWindowAction.WindowContent>
<views:DataFeedManagerView/>
</prism:PopupWindowAction.WindowContent>
</prism:PopupWindowAction>
</prism:InteractionRequestTrigger>
</i:Interaction.Triggers>
<Button Content=" Show Data Feed Manager" Command="{Binding ShowDataFeedManagerCommand}"/>
<ContentControl prism:RegionManager.RegionName="{x:Static constants:WellKnownRegionNames.ContentRegion}" />
</DockPanel>
using System.Windows.Input;
using Prism.Commands;
using Prism.Interactivity.InteractionRequest;
using Prism.Mvvm;
namespace PrismUnityApp.ViewModels
{
public class ShellViewModel : BindableBase
{
private string _title = "Prism Unity Application";
public ICommand ShowDataFeedManagerCommand { get; }
public InteractionRequest<IConfirmation> ConfirmationRequest { get; }
public string Title
{
get { return _title; }
set { SetProperty(ref _title, value); }
}
public ShellViewModel()
{
ConfirmationRequest = new InteractionRequest<IConfirmation>();
ShowDataFeedManagerCommand = new DelegateCommand(ShowDataFeedManager);
}
public void ShowDataFeedManager()
{
ConfirmationRequest.Raise(
new Confirmation {Title = "Data Feed Manager", Content = string.Empty},
confirmation =>
{
});
}
}
}
.. :: DataFeedManager :: ..
<UserControl x:Class="PrismUnityApp.Views.DataFeedManagerView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:constants="clr-namespace:PrismUnityApp.Constants"
xmlns:prism="http://prismlibrary.com/"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
prism:ViewModelLocator.AutoWireViewModel="True"
Height="240" Width="320">
<DockPanel LastChildFill="True">
<ListBox
SelectedItem="{Binding Current, Mode=OneWay}"
ItemsSource="{Binding DataFeeds}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<prism:InvokeCommandAction
Command="{Binding SelectionChangedCommand}"
CommandParameter="{Binding SelectedItem, RelativeSource={RelativeSource Self}}"></prism:InvokeCommandAction>
</i:EventTrigger>
</i:Interaction.Triggers>
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Key}"></TextBlock>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<ContentControl prism:RegionManager.RegionName="{x:Static constants:WellKnownRegionNames.DataFeedRegion}"></ContentControl>
</DockPanel>
using System.Collections.Generic;
using System.Linq;
using System.Windows.Controls;
using System.Windows.Input;
using Microsoft.Practices.Unity;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using PrismUnityApp.Constants;
using PrismUnityApp.Interfaces;
namespace PrismUnityApp.ViewModels
{
public class DataFeedManagerViewModel : BindableBase, IDataFeedManagerViewModel
{
private readonly IRegionManager _regionManager;
public IDictionary<string, object> DataFeeds { get; }
public ICommand SelectionChangedCommand { get; }
public DataFeedManagerViewModel(IUnityContainer unityContainer, IRegionManager regionManager)
{
_regionManager = regionManager;
SelectionChangedCommand = new DelegateCommand<SelectionChangedEventArgs>(SelectionChanged);
DataFeeds = new Dictionary<string, object>
{
{WellKnownDataFeedNames.SimulationDataFeed, unityContainer.Resolve<ISimulationDataFeedView>()},
{WellKnownDataFeedNames.BarchartDataFeed, unityContainer.Resolve<IBarchartDataFeedView>()}
};
foreach (var dataFeed in DataFeeds)
_regionManager.RegisterViewWithRegion(WellKnownRegionNames.DataFeedRegion, () => dataFeed.Value);
}
public void SelectionChanged(SelectionChangedEventArgs e)
{
var addedItem = (KeyValuePair<string, object>) e.AddedItems[0];
var region = _regionManager.Regions[WellKnownRegionNames.DataFeedRegion];
region.Activate(addedItem.Value);
}
}
}
.. ::引导程序:: ..
using System.Windows;
using Microsoft.Practices.Unity;
using Prism.Unity;
using PrismUnityApp.Interfaces;
using PrismUnityApp.ViewModels;
using PrismUnityApp.Views;
namespace PrismUnityApp
{
class Bootstrapper : UnityBootstrapper
{
#region Overrides of UnityBootstrapper
protected override void ConfigureContainer()
{
base.ConfigureContainer();
Container.RegisterType<ISimulationDataFeedView, SimulationDataFeedView>();
Container.RegisterType<ISimulationDataFeedViewModel, SimulationDataFeedViewModel>();
Container.RegisterType<IBarchartDataFeedView, BarchartDataFeedView>();
Container.RegisterType<IBarchartDataFeedViewModel, BarchartDataFeedViewModel>();
Container.RegisterType<IDataFeedManagerView, DataFeedManagerView>();
Container.RegisterType<IDataFeedManagerViewModel, DataFeedManagerViewModel>();
}
protected override DependencyObject CreateShell()
{
return Container.Resolve<ShellView>();
}
protected override void InitializeShell()
{
Application.Current.MainWindow.Show();
}
#endregion
}
}
答案 0 :(得分:5)
可能你需要手动设置区域管理器,在弹出视图的代码后面(构造函数),如下所示:
RegionManager.SetRegionName( theNameOfTheContentControlInsideThePopup, WellKnownRegionNames.DataFeedRegion );
RegionManager.SetRegionManager( theNameOfTheContentControlInsideThePopup, theRegionManagerInstanceFromUnity );
您必须为托管该区域的内容控件指定一个名称,然后以某种方式获取区域管理器(ServiceLocator.Current.GetInstance<IRegionManager>()
)。