如何在已有资源的WPF组件上设置XAML中的资源？

Question

我已经创建了与已经用于其内部运作定义的资源一个DataGrid一个用户控件：现在

 <DataGrid.Resources> 
      <Style TargetType="{x:Type DataGridColumnHeader}"> 
       <Setter Property="ContentTemplate"> 
        <Setter.Value> 
         <DataTemplate> 
          <Grid> 
           <Grid.ColumnDefinitions> 
            <ColumnDefinition Width="23" /> 
            <ColumnDefinition Width="*" /> 
           </Grid.ColumnDefinitions> 
           <Button x:Name="ExcelFilterButton" 
             Grid.Column="0" 
             Margin="0,0,0,0" 
             BorderThickness="0" 
             Click="ExcelFilterButton_Click" 
             Focusable="False" 
             Style="{StaticResource {x:Static ToolBar.ButtonStyleKey}}" 
             Tag="{Binding}"> 
            <Image Width="19" 
              Height="19" 
              Source="Resources\NoSortNoFilter.png" 
              Tag="{Binding}" /> 
           </Button> 
           <TextBlock Grid.Column="1" 
              HorizontalAlignment="Center" 
              VerticalAlignment="Center" 
              Text="{Binding}" /> 
          </Grid> 
         </DataTemplate> 
        </Setter.Value> 
       </Setter> 
      </Style> 
     </DataGrid.Resources> 

，而试图在应用程序中使用的组件，并与下面的XAML

      <adg:AdvancedSortFilterDataGrid.Resources> 
           <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" Color="{x:Static SystemColors.HighlightColor}" /> 
           <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightTextBrushKey}" Color="{x:Static SystemColors.HighlightTextColor}" />         
          </adg:AdvancedSortFilterDataGrid.Resources> 

设置一些颜色

获取我下面的运行时错误：

'Set property 'System.Windows.ResourceDictionary.DeferrableContent' threw an exception.' Line number '200' and line position '34'. 

我试图用资源属性的组件，只需添加资源到现有资源，但获得相同的错误。这里的属性：

Public Shadows Property Resources As ResourceDictionary 
    Get 
     Return dataGrid.Resources 
    End Get 
    Set(value As ResourceDictionary) 
     For Each Key As Object In value.Keys 
      dataGrid.Resources.Add(Key, value(Key)) 
     Next 
    End Set 
End Property 

希望有人能让我直接。

编辑：的InnerException：

Cannot re-initialize ResourceDictionary instance. 

Answer 1

好吧，看来我发现StackOverflow的答案。不知道为什么我在最初的搜索中没有找到这些。无论如何，我发现如果我将资源放在组件和使用应用程序中的ResourcesDictionary元素中，并将ResourcesDictionary元素放入组件中的MergedDictionaries元素内，它就可以正常工作。

组件：

 <DataGrid.Resources> 
      <ResourceDictionary> 
       <ResourceDictionary.MergedDictionaries> 
        <ResourceDictionary> 
         <Style TargetType="{x:Type DataGridColumnHeader}"> 
          <Setter Property="ContentTemplate"> 
           <Setter.Value> 
            <DataTemplate> 
             <Grid> 
              <Grid.ColumnDefinitions> 
               <ColumnDefinition Width="23" /> 
               <ColumnDefinition Width="*" /> 
              </Grid.ColumnDefinitions> 
              <Button x:Name="ExcelFilterButton" 
                Grid.Column="0" 
                Margin="0,0,0,0" 
                BorderThickness="0" 
                Click="ExcelFilterButton_Click" 
                Focusable="False" 
                Style="{StaticResource {x:Static ToolBar.ButtonStyleKey}}" 
                Tag="{Binding}"> 
               <Image Width="19" 
                 Height="19" 
                 Source="Resources\NoSortNoFilter.png" 
                 Tag="{Binding}" /> 
              </Button> 
              <TextBlock Grid.Column="1" 
                 HorizontalAlignment="Center" 
                 VerticalAlignment="Center" 
                 Text="{Binding}" /> 
             </Grid> 
            </DataTemplate> 
           </Setter.Value> 
          </Setter> 
         </Style> 
        </ResourceDictionary> 
       </ResourceDictionary.MergedDictionaries> 
      </ResourceDictionary> 
     </DataGrid.Resources> 

使用应用程序：

      <adg:AdvancedSortFilterDataGrid.Resources> 
           <ResourceDictionary> 
            <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" Color="{x:Static SystemColors.HighlightColor}" /> 
            <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightTextBrushKey}" Color="{x:Static SystemColors.HighlightTextColor}" /> 
           </ResourceDictionary> 
          </adg:AdvancedSortFilterDataGrid.Resources> 

我改变了资源属性的组件的新ResourcesDictionary添加到MergedDictionaries。

Public Shadows Property Resources As ResourceDictionary 
    Get 
     If dataGrid.Resources.MergedDictionaries.Count < 2 Then 
      Return Nothing 
     Else 
      Return dataGrid.Resources.MergedDictionaries(1) 
     End If 
    End Get 
    Set(value As ResourceDictionary) 
     Do Until dataGrid.Resources.MergedDictionaries.Count = 1 
      dataGrid.Resources.MergedDictionaries.RemoveAt(1) 
     Loop 
     dataGrid.Resources.MergedDictionaries.Add(value) 
    End Set 
End Property 

现在它工作正常。这太简单了，看不到。