Can I bind to use content from the controls nested in the templated parent?

Question

I want to use the System.Windows.Controls.DocumentViewer to view a FixedDocument I created from a PDF file using TallComponents.PDF.Rasterizer. This is working, however, I want to disable or remove some of the toolbar buttons displayed by the DocumentViewer control. I'm using the template exmaple from here.

<Style x:Key="{x:Type DocumentViewer}"
       TargetType="{x:Type DocumentViewer}">
  <Setter Property="Foreground"
      Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" />
  <Setter Property="Background"
      Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" />
  <Setter Property="FocusVisualStyle"
          Value="{x:Null}" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type DocumentViewer}">
        <Border BorderThickness="{TemplateBinding BorderThickness}"
                BorderBrush="{TemplateBinding BorderBrush}"
                Focusable="False">
          <Grid KeyboardNavigation.TabNavigation="Local">
            <Grid.Background>
              <SolidColorBrush Color="{DynamicResource ControlLightColor}" />
            </Grid.Background>
            <Grid.RowDefinitions>
              <RowDefinition Height="Auto" />
              <RowDefinition Height="*" />
              <RowDefinition Height="Auto" />
            </Grid.RowDefinitions>
            <ToolBar ToolBarTray.IsLocked="True"
                     KeyboardNavigation.TabNavigation="Continue">
              <Button Command="NavigationCommands.IncreaseZoom"
  CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"
                      Content="Zoom In" />
              <Button Command="NavigationCommands.DecreaseZoom"
  CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"
                      Content="Zoom Out" />
              <Separator />
              <!--
              <Button Command="NavigationCommands.Zoom"
  CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"
                      CommandParameter="100.0"
                      Content="Actual Size" />
              -->
              <Button Command="DocumentViewer.FitToWidthCommand"
  CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"
                      Content="Fit to Width" />
              <Button Command="DocumentViewer.FitToMaxPagesAcrossCommand"
  CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"
                      CommandParameter="1"
                      Content="Whole Page" />
              <Button Command="DocumentViewer.FitToMaxPagesAcrossCommand"
  CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"
                      CommandParameter="2"
                      Content="Two Pages" />
            </ToolBar>
            <ScrollViewer Grid.Row="1"
                          CanContentScroll="true"
                          HorizontalScrollBarVisibility="Auto"
                          x:Name="PART_ContentHost"
                          IsTabStop="true">
              <ScrollViewer.Background>
                <LinearGradientBrush EndPoint="0.5,1"
                                     StartPoint="0.5,0">
                  <GradientStop Color="{DynamicResource ControlLightColor}"
                                Offset="0" />
                  <GradientStop Color="{DynamicResource ControlMediumColor}"
                                Offset="1" />
                </LinearGradientBrush>
              </ScrollViewer.Background>
            </ScrollViewer>
            <ContentControl Grid.Row="2"
                            x:Name="PART_FindToolBarHost"/>
          </Grid>
        </Border>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

This is very similar to the linked example but I have removed the Print and Copy command buttons. I don't want the users to be able to use those buttons.

I also had to comment out the Zoom command, the IDE complained this was not a valid command, bonus votes for the answer to that problem.

This all works but after templating I no longer get the images on the tool bar buttons, just the text I specified in Content. So my question is, "Can I bind to use content from the controls nested in the templated parent?"

Answer 1

Here's what I got when I used Blend to extract and edit the template for the DocumentViewer. I commented out the two buttons you mentions.

As far as the Zoom commands, it might have complained about invalid commands because you were missing a namespace import for System.Windows.Documents.

Xaml:

<Page
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:System_Windows_Documents="clr-namespace:System.Windows.Documents;assembly=PresentationUI"
x:Class="WpfApplication6.Page2"
x:Name="Page"
WindowTitle="Page"
FlowDirection="LeftToRight"
Width="640" Height="480"
WindowWidth="640" WindowHeight="480">

<Page.Resources>
    <Style x:Key="DocumentViewerStyle1" BasedOn="{x:Null}" TargetType="{x:Type DocumentViewer}">
        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
        <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
        <Setter Property="ContextMenu" Value="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerContextMenu, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type DocumentViewer}">
                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Focusable="False">
                        <Grid Background="{TemplateBinding Background}" KeyboardNavigation.TabNavigation="Local">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="*"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="*"/>
                                <RowDefinition Height="Auto"/>
                            </Grid.RowDefinitions>
                            <ContentControl Grid.Column="0" Focusable="{TemplateBinding Focusable}" Grid.Row="0" Style="{DynamicResource ContentControlStyle1}" TabIndex="0"/>
                            <ScrollViewer x:Name="PART_ContentHost" CanContentScroll="true" Grid.Column="0" Focusable="{TemplateBinding Focusable}" HorizontalScrollBarVisibility="Auto" IsTabStop="true" Grid.Row="1" TabIndex="1"/>
                            <DockPanel Grid.Row="1">
                                <FrameworkElement DockPanel.Dock="Right" Width="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
                                <Rectangle Height="10" Visibility="Visible" VerticalAlignment="top">
                                    <Rectangle.Fill>
                                        <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                                            <LinearGradientBrush.GradientStops>
                                                <GradientStopCollection>
                                                    <GradientStop Color="#66000000" Offset="0"/>
                                                    <GradientStop Color="Transparent" Offset="1"/>
                                                </GradientStopCollection>
                                            </LinearGradientBrush.GradientStops>
                                        </LinearGradientBrush>
                                    </Rectangle.Fill>
                                </Rectangle>
                            </DockPanel>
                            <ContentControl x:Name="PART_FindToolBarHost" Grid.Column="0" Focusable="{TemplateBinding Focusable}" Grid.Row="2" TabIndex="2"/>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="ContentControlStyle1" TargetType="{x:Type ContentControl}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ContentControl}">
                    <ToolBar Focusable="{TemplateBinding Focusable}" ToolBarTray.IsLocked="True" Language="en-us" KeyboardNavigation.TabNavigation="Continue" Uid="ToolBar_2">
                        <!-- <Button x:Name="PrintButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerPrintButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" Command="ApplicationCommands.Print" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="0" ToolTip="Print (Ctrl+P)" Uid="Button_14" VerticalAlignment="Center" Width="24"/> -->
                        <!-- <Button x:Name="CopyButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerCopyButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" Command="ApplicationCommands.Copy" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="1" ToolTip="Copy (Ctrl+C)" Uid="Button_15" VerticalAlignment="Center" Width="24"/> -->
                        <!-- <Separator Uid="Separator_110"/> -->
                        <Button x:Name="ZoomInButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerZoomInButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" Command="NavigationCommands.IncreaseZoom" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="3" ToolTip="Increase the size of the content (Ctrl +)" Uid="Button_16" VerticalAlignment="Center" Width="24"/>
                        <Button x:Name="ZoomOutButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerZoomOutButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" Command="NavigationCommands.DecreaseZoom" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="4" ToolTip="Decrease the size of the content (Ctrl -)" Uid="Button_17" VerticalAlignment="Center" Width="24"/>
                        <Separator Uid="Separator_111"/>
                        <Button x:Name="ActualSizeButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerActualSizeButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" CommandParameter="100.0" Command="NavigationCommands.Zoom" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="5" ToolTip="100% (Ctrl+1)" Uid="Button_18" VerticalAlignment="Center" Width="24"/>
                        <Button x:Name="PageWidthButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerPageWidthButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" Command="DocumentViewer.FitToWidthCommand" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="6" ToolTip="Page Width (Ctrl+2)" Uid="Button_19" VerticalAlignment="Center" Width="24"/>
                        <Button x:Name="WholePageButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerWholePageButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" CommandParameter="1" Command="DocumentViewer.FitToMaxPagesAcrossCommand" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="7" ToolTip="Whole Page (Ctrl+3)" Uid="Button_20" VerticalAlignment="Center" Width="24"/>
                        <Button x:Name="TwoPagesButton" Background="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerTwoPagesButton, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" CommandTarget="{Binding TemplatedParent, RelativeSource={RelativeSource TemplatedParent}}" CommandParameter="2" Command="DocumentViewer.FitToMaxPagesAcrossCommand" IsTabStop="True" Margin="2" Padding="2" Style="{DynamicResource {ComponentResourceKey ResourceId=PUIDocumentViewerButtonStyle, TypeInTargetAssembly={x:Type System_Windows_Documents:PresentationUIStyleResources}}}" ToolTipService.ShowOnDisabled="True" TabIndex="8" ToolTip="Two Pages (Ctrl+4)" Uid="Button_21" VerticalAlignment="Center" Width="24"/>
                    </ToolBar>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Page.Resources>

<Grid x:Name="LayoutRoot">
    <DocumentViewer Style="{DynamicResource DocumentViewerStyle1}"/>
</Grid>