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how to base a style on another style and refer to its elements?

i have an ExtendedTreeView control which extendes TreeView. My extendedTreeView has a property called Highlight so unlike a normal TreeView, i want the extendedTreeView to highlight items based on this Highlight property rather than IsSelected. So I have a style defined for a TreeView like below.
<Style x:Key="TreeViewStyle" TargetType="{x:Type TreeViewItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TreeViewItem}">
<Border Name="Bd"
Background="Transparent"
//other stuff
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="Bd" Property="Background" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Background}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
And then i define another style for the extendedTreeView which is based on the TreeViewStyle. The problem is that when i try to set "Bd" which is the border, it can't recognize it and has no idea what im referring to.
<Style x:Key="TreeViewStyle2" TargetType="{x:Type controls:ExtendedTreeView}" BasedOn="{StaticResource TreeViewStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TreeViewItem}">
<ControlTemplate.Triggers>
<Trigger Property="controls:ExtendedTreeView.Highlight" Value="true">
<Setter TargetName="Bd" Property="Background" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Background}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
IS there anyway of fixing this? or an alternative way of doing it? thanks

Check Toggle button state and manual trigger it using C#

I am trying to trigger ToggleButton programmatically using C#.
I have a ToggleButton the switch imaged between muted and unmuted. If I toggle the button to muted I have the expected image but if I change the VolumeBar I have to trigger the button from C# because if doesn't do it automatically.
<ToggleButton x:Name="MuteBtn" Height="20" Width="20" Background="Transparent" Click="MuteButton_Click">
<ToggleButton.Style>
<Style TargetType="{x:Type ToggleButton}">
<Setter Property="Content">
<Setter.Value>
<Image Source="/Resources/audio-volume_on.ico" />
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content">
<Setter.Value>
<Image Source="/Resources/volume_off.ico" />
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
</ToggleButton.Style>
</ToggleButton>
I have a class called VolumeBar_ValueChanged that has to Toggle the button based on the VolumeBar Value.

As #Anu Viswan said, The isChecked property may solve your problem.

Try to use ControlTemplate for ToggleButton.
<ToggleButton>
<ToggleButton.Style>
<Style TargetType="ToggleButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Image x:Name="borderImage" Source="Image1.jpg"/>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Source" Value="Image2.jpg" TargetName="borderImage"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ToggleButton.Style>
</ToggleButton>

WPF Data Trigger

Hi I just wondered if I could get some help, I'm having alot of trouble getting the data trigger to work, if i remove the data trigger and place the drop shadow just as a setter it works. But i want to be able to give the user the option of turning on and off the drop shadow so I thought the data trigger would be the answer.
Basically I want to add the data trigger all over my control styles and just be able to change the fancyGraphics BOOL to TRUE or FALSE and have every controls drop shadow adjust.
Thanks in advance.
Here is my XAML
<sys:Boolean x:Key="fancyGraphics" >True</sys:Boolean>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="#EEE"></Setter>
<Setter Property="Foreground" Value="#555"></Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}" BorderThickness="1" BorderBrush="#DDD">
<Grid>
<ContentPresenter x:Name="MyContentPresenter" Content="{TemplateBinding Content}" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="0" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#333"></Setter>
<Setter Property="BorderBrush" Value="#888"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding Path=fancyGraphics}" Value="True">
<Setter Property="Effect">
<Setter.Value>
<DropShadowEffect BlurRadius="20"
Opacity="0.5"
ShadowDepth="0"
Color="#111" />
</Setter.Value>
</Setter>
</DataTrigger>
</Style.Triggers>
</Style>

The binding in DataTrigger looks for a property named fancyGraphics. But, fancyGraphics is a static resource. You should define the binding as such:
<DataTrigger Binding="{Binding Source={StaticResource fancyGraphics}}" Value="True">
<Setter Property="Effect">
<Setter.Value>
<DropShadowEffect BlurRadius="20"
Opacity="0.5"
ShadowDepth="0"
Color="#111" />
</Setter.Value>
</Setter>
</DataTrigger>

Disable style of one text box among the 10 in WPF application

I have use 10 TextBox in my application and in that same application i have defined the style in App.xaml It applies for all the text boxes in my application . how to disable the style applying for a single TextBox.
Can any one help me out in this.
I used the below code to set the style
<Style TargetType="{x:Type TextBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Border Background="White"
x:Name="Bd" BorderBrush="#FF50729f" CornerRadius="3"
BorderThickness="1"
>
<ScrollViewer x:Name="PART_ContentHost"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Background" TargetName="Bd" Value="#FFe0dfe3"/>
<Setter Property="BorderBrush" TargetName="Bd" Value="#FF9da3ab"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Validation.ErrorTemplate">
<Setter.Value>
<ControlTemplate>
<Border BorderBrush="#FFd22c2c" BorderThickness="1"
Background="#FFfce8e8" CornerRadius="3" >
<AdornedElementPlaceholder></AdornedElementPlaceholder>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Background" Value="#FFe0dfe3"/>
<Setter Property="BorderBrush" Value="#FF9da3ab"/>
</Trigger>
<Trigger Property="Validation.HasError" Value="true">
<Setter Property="ToolTip"
Value="{Binding RelativeSource={RelativeSource Self},
Path=(Validation.Errors)[0].ErrorContent}"/>
</Trigger>
</Style.Triggers>
</Style>

if you just want the default style then
<TextBox Style="{x:Null}"/>
otherwise Cédric Bignon's answer with target type defined (like below) will do the job.
No property will be inherited by your application TextBoxStyle
<TextBox>
<TextBox.Style>
<Style TargetType="{x:Type TextBox}">
<!-- your setters-->
</Style>
</TextBox.Style>
</TextBox>
if you want to slightly change the default application style
then use the following tecqnique where in your style you can
redefine properties you want to be different from the default
or define additional ones
<TextBox>
<TextBox.Style>
<Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
<!-- your setters-->
</Style>
</TextBox.Style>
</TextBox>

Just use an empty style:
<TextBox>
<TextBox.Style>
<Style>
</Style>
</TextBox.Style>
</TextBox>

Attached Behavior in Trigger Causes Build Error

I have a Style with a control template and I am having trouble getting it to compile. I am trying to trigger an attached behavior. If I put it in the control template triggers it works fine...but if I put it in the textbox triggers I get a build error that says:
Cannot find the static member 'SelectAllProperty' on the type
'TextBoxBehavior'
Here is my code:
<Style x:Key="RenamingTextBox" TargetType="{x:Type TextBox}">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Grid>
<TextBlock x:Name="block" Visibility="Visible" Text="{TemplateBinding Text}" Margin="0"/>
<TextBox x:Name="box" Visibility="Collapsed" Text="{TemplateBinding Text}" Margin="0">
<TextBox.Triggers>
<Trigger Property="Visibility" Value="Visible">
<Trigger.Setters>
<Setter TargetName="box" Property="FocusManager.FocusedElement" Value="{Binding RelativeSource={RelativeSource Self}}"/>
<!-- This next line gives an error even though it is the same format as the one below -->
<Setter Property="behaviors:TextBoxBehavior.SelectAll" Value="True"/>
</Trigger.Setters>
</Trigger>
</TextBox.Triggers>
</TextBox>
</Grid>
<ControlTemplate.Triggers>
<DataTrigger Binding="{Binding IsRenaming}" Value="true">
<DataTrigger.Setters>
<Setter TargetName="block" Property="TextBox.Visibility" Value="Collapsed" />
<Setter TargetName="box" Property="TextBox.Visibility" Value="Visible" />
<!-- Uncommenting below works fine -->
<!--<Setter TargetName="box" Property="behaviors:TextBoxBehavior.SelectAll" Value="True"/>-->
</DataTrigger.Setters>
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style.Setters>
</Style>
Any ideas as to why one gives a build error and the other doesn't?

Nevermind, I needed to put the triggers for the textbox in a style instead:
<TextBox x:Name="box" Visibility="Collapsed" Text="{TemplateBinding Text}" Margin="0">
<TextBox.Style>
<Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
<Style.Triggers>
<Trigger Property="Visibility" Value="Visible">
<Setter Property="FocusManager.FocusedElement" Value="{Binding RelativeSource={RelativeSource Self}}"/>
<Setter Property="behaviors:TextBoxBehavior.SelectAll" Value="True"/>
</Trigger>
</Style.Triggers>
</Style>
</TextBox.Style>
</TextBox>