參考主窗口的字典從資源字典

Question

我有一個WPF窗口：

<Window x:Class="MyUI.MainWindow" 
     and so on> 
    <Window.Resources> 
     <ResourceDictionary> 
      <Style TargetType="{x:Type s:SurfaceListBox}" x:Key="FatherStyle" > 
     </ResourceDictionary> 
    </Window.Resources> 
</Window> 

我有一個資源字典中MyResourceDictionary.xaml：

<ResourceDictionary xmlns="........." 
        and so on > 
    <Style TargetType="{x:Type s:SurfaceListBox}" x:Key="ChildStyle" BasedOn="{StaticResource FatherStyle}" /> 
</ResourceDictionary> 

但是，當我嘗試引用ChildStyle從MyUI.Window：

<Window as shown in 1st block of code above> 
    <s:SurfaceListBox Style="{StaticResource ResourceKey=ChildStyle}" /> 
</Window> 

它告訴我它找不到FatherStyle。我讀here併合並在MyResourceDictionary.xaml字典：

<ResourceDictionary xmlns="........." 
        and so on > 
    <ResourceDictionary.MergedDictionaries> 
     <ResourceDictionary Source="MainWindow.xaml" /> 
    </ResourceDictionary.MergedDictionaries> 

    <Style ChildStyle as shown above /> 
</ResourceDictionary> 

現在它告訴我它無法找到ChildStyle。我如何正確引用它？

Answer 1

您不能從另一個文件中引用包含在Window-type XAML文件中的資源字典。你需要做的是創建一個單獨的資源字典， 「Shared.xaml」 或什麼：

<ResourceDictionary ... > 
    <Style TargetType="{x:Type s:SurfaceListBox}" x:Key="FatherStyle" > 
</ResourceDictionary> 

現在引用共享一個從你的主窗口：

...也來自「MyResourceDictionary.xaml」：

<ResourceDictionary xmlns="........." 
       and so on > 
    <ResourceDictionary.MergedDictionaries> 
     <ResourceDictionary Source="Shared.xaml" /> 
    </ResourceDictionary.MergedDictionaries> 

    <Style TargetType="{x:Type s:SurfaceListBox}" x:Key="ChildStyle" BasedOn="{StaticResource FatherStyle}" /> 
</ResourceDictionary> 

現在在你的「MyUI.xaml」窗口中，你應該能夠訪問「ChildStyle」如你所料，通過引用「MyResourceDictionary」：

<ResourceDictionary xmlns="........." 
       and so on > 
    <ResourceDictionary.MergedDictionaries> 
     <ResourceDictionary Source="MyResourceDictionary.xaml" /> 
    </ResourceDictionary.MergedDictionaries> 

    <s:SurfaceListBox Style="{StaticResource ResourceKey=ChildStyle}" /> 
</ResourceDictionary>