如何在已有資源的WPF組件上設置XAML中的資源？

Question

我已經創建了與已經用於其內部運作定義的資源一個DataGrid一個用戶控件：現在

 <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> 

，而試圖在應用程序中使用的組件，並與下面的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> 

設置一些顏色

獲取我下面的運行時錯誤：

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

我試圖用資源屬性的組件，只需添加資源到現有資源，但獲得相同的錯誤。這裏的屬性：

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 

希望有人能讓我直接。

編輯：的InnerException：

Cannot re-initialize ResourceDictionary instance. 

Answer 1

好吧，看來我發現StackOverflow的答案。不知道爲什麼我在最初的搜索中沒有找到這些。無論如何，我發現如果我將資源放在組件和使用應用程序中的ResourcesDictionary元素中，並將ResourcesDictionary元素放入組件中的MergedDictionaries元素內，它就可以正常工作。

組件：

 <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> 

使用應用程序：

      <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> 

我改變了資源屬性的組件的新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 

現在它工作正常。這太簡單了，看不到。