如何将TextBlock绑定到app.xaml中定义的ObjectDataProvider资源? [英] How can I bind a TextBlock to an ObjectDataProvider resource defined in app.xaml?

问题描述

我有一个带有MVVM的WPF应用程序，它具有一个如下所示的Ap.XAML.

I have a WPF application with MVVM, it has an Ap.XAML that looks like this.

 <Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Assets/StyleDictionary.xaml"/>
        </ResourceDictionary.MergedDictionaries>
        <ObjectDataProvider x:Key="SAG_POK" ObjectType="{x:Type or:SAG_POK}" />
    </ResourceDictionary>        
</Application.Resources>

现在，在MainWindow.XAML上，我想绑定到Ap.xaml中的SAG_POK ObjectDataprovider.

Now, on the MainWindow.XAML I want to bind to the SAG_POK ObjectDataprovider in Ap.xaml.

<StackPanel
   DataContext="{Binding Source={StaticResource SAG_POK}}">
   <TextBlock Name="ValgtSag" Text="{Binding ToStringProperty}"/>
</StackPanel>

我的问题是，在我的一个视图模型中，我使用SAG_POK的实例实例化了App.xaml中的SAG_POK ObjectDataProvider.

My problem is that in one of my viewmodels, I instantiate the SAG_POK ObjectDataProvider in App.xaml with an instance of SAG_POK.

App.Current.Resources["SAG_POK"] = SagSelecteditem;

但是我不知道将OnNotifyPropertyChanged("SAG_POK")放在哪里，但是我尝试了不同的方案，但是似乎都不起作用.

But I can't figure out where to put my OnNotifyPropertyChanged("SAG_POK") I have tried different scenarios but none of them seems to work.

任何曾经尝试过此方法的人?，请提前告知我任何提示.

Anyone who has tried this before ?, please let me know of any hints, thanks in advance.

推荐答案

您可以这样做

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Assets/StyleDictionary.xaml"/>
        </ResourceDictionary.MergedDictionaries>
        <!--<ObjectDataProvider x:Key="SAG_POK" ObjectType="{x:Type or:SAG_POK}" />-->
        <local:MainViewModel x:Key="SAG_POK" />
    </ResourceDictionary>        
</Application.Resources>


<StackPanel DataContext="{Binding Source={StaticResource SAG_POK}}">
   <TextBlock Name="ValgtSag" Text="{Binding ToStringProperty}"/>
</StackPanel>

App.Current.Resources["SAG_POK"].SelectedItem = SagSelectedItem;

MainViewModel是孔应用程序中的主视图模型:-)

MainViewModel is yout main view model :-) in the hole application

希望这会有所帮助

这篇关于如何将TextBlock绑定到app.xaml中定义的ObjectDataProvider资源?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！