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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>

WPF ToggleButton not changing colour when checked

I am trying to make a style for ToggleBox so that it changes colour when clicked, I have successfully given it a dropdown shadow on mouse over but for some reason when I click it instead of going into the checked state it stays stuck on the mouse over state.
It's XAML is:
<!--Primary toggle button style-->
<Style x:Key="PrimaryRoundedToggleButton" TargetType="ToggleButton">
<Setter Property="Margin" Value="5"/>
<Setter Property="Width" Value="180"/>
<Setter Property="Height" Value="30"/>
<Setter Property="Background" Value="#E08827"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="FontSize" Value="15"/>
<Setter Property="FontWeight" Value="DemiBold"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border CornerRadius="4" Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border CornerRadius="4" Background="{TemplateBinding Background}">
<Border.Effect>
<DropShadowEffect BlurRadius="4" ShadowDepth="3" Direction="300" Opacity="0.5"/>
</Border.Effect>
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border CornerRadius="4" Background="#58585a">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
And the event handler is:
private void primaryToggleButton_Checked(object sender, RoutedEventArgs e)
{
primaryToggleButton.Content = "Restarting...";
serviceStatusChangeTimeout = Int32.Parse(ConfigurationManager.AppSettings.Get("serviceStatusChangeTimeout"));
websiteStatusChangeTimeout = Int32.Parse(ConfigurationManager.AppSettings.Get("websiteStatusChangeTimeout"));
MidTier.ServiceRestart(serviceStatusChangeTimeout);
Thread.Sleep(1000);
cacheBuilderStatus.Source = new BitmapImage(new Uri("pack://application:,,,/WpfCustomControlLibrary1;component/Resources/checkbox-complete.png"));
MidTier.CheckLastModified();
MidTier.webSiteRestart();
MidTier.applicationPoolRecycle();
primaryToggleButton.IsChecked = false;
}
I am also trying to have it change the text in the button as well, but I remember finding how to do that in XAML so I will try and dig that up again before I ask that question.
Thank you.

So your button stays in the mouse over state because there is no trigger for when the mouse is not over (<Trigger Property="IsMouseOver" Value="false"><!--reset things--></Trigger>). With you have to have multiple triggers and on and off you may need to look into MultiDataTrigger. This isn't a need at the moment for you, but I see that it may soon be.
How can I provide multiple conditions for data trigger in WPF?

You should do a trigger when the value of IsMouseOver is false.
Also I would suggest you to override the template and do what you need:
<Setter Property="Template">
...
</ControlTemplate>
And mark ControlTemplate.Triggers for your triggers.

Background does not change of button C# WPF

I am trying to change style on mouseover.
My Code is:
<Button Name="register" Content="Register" Margin="15,410,20,0" Padding="6" FontSize="18" VerticalAlignment="Top" Background="#FF0090D6" BorderBrush="#FF0090D6" Foreground="White">
<Button.Style>
<Style TargetType="Button">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Red"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
But the Background is the same default thing. But when i change property to BorderThickness then it works.
What am i doing wrong?

In the default template of button, there is trigger in ControlTemplate which set Background of button to #FFBEE6FD and since control template triggers have higher precedence compared to Style triggers that's why your trigger never works.
For that to achieve you have to override default template of button and remove that trigger from it so that your style trigger gets applied.
Here is the default template with that specific trigger commented out. In case you want to override BorderBrush as well, get rid of it as well from the template.
<ControlTemplate x:Key="DefaultTemplateOfButton" TargetType="ButtonBase">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
Name="border"
SnapsToDevicePixels="True">
<ContentPresenter RecognizesAccessKey="True"
Content="{TemplateBinding ContentControl.Content}"
ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}"
Name="contentPresenter"
Margin="{TemplateBinding Control.Padding}"
HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}"
SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}"
Focusable="False" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Button.IsDefaulted" Value="True">
<Setter Property="Border.BorderBrush" TargetName="border">
<Setter.Value>
<DynamicResource ResourceKey="{x:Static SystemColors.HighlightBrushKey}" />
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="UIElement.IsMouseOver" Value="True">
<!--<Setter Property="Panel.Background" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FFBEE6FD</SolidColorBrush>
</Setter.Value>
</Setter>-->
<Setter Property="Border.BorderBrush" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FF3C7FB1</SolidColorBrush>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="ButtonBase.IsPressed" Value="True">
<Setter Property="Panel.Background" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FFC4E5F6</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FF2C628B</SolidColorBrush>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Panel.Background" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FFBCDDEE</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FF245A83</SolidColorBrush>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="Panel.Background" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FFF4F4F4</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush" TargetName="border">
<Setter.Value>
<SolidColorBrush>#FFADB2B5</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter Property="TextElement.Foreground" TargetName="contentPresenter">
<Setter.Value>
<SolidColorBrush>#FF838383</SolidColorBrush>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
How to set the control template to button?
Define the template somewhere under resource section of parent panel or UserControl and can be applied via StaticResource:
<Grid>
<Grid.Resources>
<ControlTemplate x:Key="MyTemplate"
TargetType="ButtonBase">
.......
</Grid.Resources>
<Button Name="register" Template="{StaticResource MyTemplate}"...>
</Grid>

Edit: As Rohit pointed out in the comments,
This won't work on Windows 8 because of some changes in PresentationFramework where default template of button is declared. ... In Windows 7 default template of button doesn't have that ControlTemplate trigger. That's why your posted code works fine on Windows7 but it won't work on Windows 8 and higher.
Rohit's answer about DependencyProperty Precedence being the cause is correct, but there's a much simpler way of fixing it than overwriting the Button's Template.
If you review the DependencyProperty Precedence List, you'll notice that properties set in the <Tag> have a higher precedence than Triggered properties, which is why your button will always use the background you have defined in your <Button> tag.
If you move the Background property to the <Style> itself, then triggered property will work since Triggered properties take precedence over properties defined in a Style.
<Button Name="register" Content="Register" ...>
<Button.Style>
<Style TargetType="Button">
<Setter Property="Background" Value="#FF0090D6" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>

You have to override the default template for achieve this.
<Button Content="Button" HorizontalAlignment="Left" VerticalAlignment="Bottom" Width="50" Height="50" HorizontalContentAlignment="Left" BorderBrush="{x:Null}" Foreground="{x:Null}" Margin="50,0,0,0">
<Button.Style>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="Green"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="DarkGoldenrod"/>
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
Hope this helps.

<Button Content="Button" HorizontalAlignment="Left" VerticalAlignment="Bottom" Width="50" Height="50" HorizontalContentAlignment="Left" BorderBrush="{x:Null}" Foreground="{x:Null}" Margin="50,0,0,0">
<Button.Style>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="Green"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="DarkGoldenrod"/>
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
Above code perfectly works,
Even with this user can change the background color of button in runtime/codebehind

Remove Border around Button

I've been trying to remove the Border around a Button and also change the Colour of the Button's Background when the mouse hovers over it.
Here is what I have:
<Button Name="Home" Content="Home" HorizontalAlignment="Left" Width="75" Click="Button_Click_Home" Background="#FF252525" FontFamily="/VideoManager;component/#Myriad Pro" FontSize="13.333" Foreground="White" BorderThickness="5">
<Button.Style>
<Style TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border BorderThickness="0"/>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#FF36290A"/>
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
The issue is that regardless of what I set BorderThickness to, the Button disappears. Also the Button is not changing to the colour I specified with the Trigger.
I also tried simply using a Style Setter but found this had no effect on my Button.
<Style TargetType="{x:Type Button}">
<Setter Property="BorderThickness" Value="0"/>
</Style>

You need to define following ControlTemplate and remove Style Trigger.
<ControlTemplate TargetType="{x:Type Button}">
<Border Name="border"
Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center"
VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver"
Value="True">
<Setter TargetName="border"
Property="Background"
Value="#FF36290A" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
I have tried this and this is working.

I have a style that I use to remove the default Windows style from buttons ; I'm sure you can use it or use it to achieve what you want. As it is, it just makes a button with absolutely no border, no background, no margins, nothing, just play with the template to achieve what you want :
<Style x:Key="NoChromeButton" TargetType="{x:Type Button}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid x:Name="Chrome" Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="#ADADAD"/>
<Setter Property="Opacity" TargetName="Chrome" Value="0.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Cursor" Value="Hand"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
It is not mine but I don't remember where I found it, so sorry if the author come by !
You could also take the default button template from MSDN and tweak it.

Change the Button contents in XAML on trigger

I'm trying to make a template that will change a Button's background as well as the color of it's TextBlock. I tried the following XAML in my template, but it just makes the button dissapear on mouseover. Is there any way to change the properties of a buttons contents on triggers?
<ControlTemplate TargetType="{x:Type Button}">
<Border
x:Name="Border"
CornerRadius="0"
BorderThickness="0"
Background="{x:Null}"
BorderBrush="#FF404040" />
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="Border" Property="Background" Value="White" />
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate DataType="TextBlock">
<TextBlock Foreground="Blue" />
</DataTemplate>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>

Style:
<Style TargetType="{x:Type Button}" x:Key="MyButton">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="Border"
CornerRadius="0"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}"
TextBlock.Foreground="{TemplateBinding Foreground}"
BorderBrush="#FF404040">
<ContentPresenter Margin="2"
HorizontalAlignment="Center"
VerticalAlignment="Center"
RecognizesAccessKey="True" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="Border" Property="Background" Value="White" />
<Setter TargetName="Border" Property="TextBlock.Foreground" Value="Blue" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Usage:
<Button Width="100" Height="50" Content="Lalala" Style="{StaticResource MyButton}" Background="Brown" Foreground="Green" BorderThickness="2"></Button>
You're missing the ContentPresenter, responsible for visualizing the Content property of the Button.
To set the foreground you can use TextBlock.Foreground attached property.
Control Styles and Templates has always been very usefull to me :)