Develop Reference

Adding one WPF style property kills all other style properties

I've a style for my WPF buttons, defined in the main window:
<Window.Resources>
<Style TargetType="Button">
<Setter Property="Width" Value="Auto" />
<Setter Property="Height" Value="Auto" />
<Setter Property="FontSize" Value="12" />
<Setter Property="Foreground" Value="#FFFFFF" />
<Setter Property="Background" Value="#3fa9f5" />
...
</Style>
</Window.Resources>
In an UserControl, I want to set the content and the background depending on a binding:
<Button.Style>
<Style TargetType="Button">
<Setter Property="Content" Value="Text123" />
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=myControl, Path=IsHidden}"
Value="true">
<Setter Property="Content" Value="TextABC" />
<Setter Property="Background" Value="#ff1d25" />
</DataTrigger>
</Style.Triggers>
</Style>
</Button.Style>
The problem: The button in the UserControl looses all other properties it gets from the main window style (color, width, margins, ...).
I tried to let the UserControl button's style know the parent style via
BasedOn="{StaticResource {x:Type Button}}"
but with no result.

Bind to Style Setter from a different Style

how do I go about binding the Foreground Colour of one Style setter to the Fill Colour on another Style Setter, it should be the same object type. This is the code I have got below!
Getting these errors:
System.Windows.Data Error: 4 : Cannot find source for binding with
reference 'ElementName=MenuItemPath'. BindingExpression:Path=Fill;
DataItem=null; target element is 'TextBlock' (Name=''); target
property is 'Foreground' (type 'Brush')
<Style x:Key="MenuItemName" TargetType="TextBlock">
<Setter Property="Foreground" Value="{Binding ElementName=MenuItemPath, Path=Fill}" />
<Setter Property="FontWeight" Value="Bold" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="HorizontalAlignment" Value="Left" />
</Style>
<ControlTemplate x:Key="MenuItem" TargetType="RadioButton">
<ControlTemplate.Resources>
<Style TargetType="Path" x:Name="MenuItemPath">
<Setter Property="Fill" Value="#FF22252C" />
<Setter Property="Height" Value="25" />
<Setter Property="Width" Value="25" />
<Setter Property="Stretch" Value="Uniform" />
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type RadioButton}}, Path=IsChecked}" Value="True">
<Setter Property="Fill" Value="White" />
</DataTrigger>
</Style.Triggers>
</Style>
</ControlTemplate.Resources>

Personally I would create a separate Resource for storing the brush color, and reference it from both locations.
<SolidColorBrush Color="#FF22252C" x:Key="MenuFillColor" />
<Style x:Key="MenuItemName" TargetType="TextBlock">
<Setter Property="Foreground" Value="{StaticResource MenuFillColor}" />
...
</Style>
<ControlTemplate x:Key="MenuItem" TargetType="RadioButton">
<ControlTemplate.Resources>
<Style TargetType="Path" x:Name="MenuItemPath">
<Setter Property="Fill" Value="{StaticResource MenuFillColor}" />
...
</Style>
</ControlTemplate.Resources>
</ControlTemplate>
That said, I've never actually tried binding to another Style's Setter.Value property... it might be possible assuming everything was the same scope. You look like you may have different scopes since you are using <ControlTemplate.Resources> to limit the scope of your MenuItemPath style to just that ControlTemplate. But personally I would not attempt it, and would assume any requirement that needed something like this could also be done some better way :)

It is not possible to access outer property of another style in wpf and that's why you have got binding error. Rather you can declare a color in your resources and from where you can access it.

I was making it more complicated than need be, I just added a DataTrigger which fixed the issue:
<Style x:Key="MenuItemName" TargetType="TextBlock">
<Setter Property="Foreground" Value="Black" />
<Setter Property="FontWeight" Value="Bold" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="HorizontalAlignment" Value="Left" />
<Style.Triggers>
<DataTrigger Binding="{Binding IsChecked, ElementName=MenuItemRadio}" Value="True">
<Setter Property="Foreground" Value="White" />
</DataTrigger>
</Style.Triggers>
</Style>

WPF :Material Design + dragablz tabItem header style

I am working in WPF with the MaterialDesign Toolkit and Dragablz.
I encountered a problem while trying to style a TabablzControl.
I already have style for the windows default TabControl and TabItem header, as shown in the picture:
http://i.imgur.com/2anl5rl.png
But when I change the default tabControl to TabablzControl, it turns into this:
http://i.imgur.com/bhaaMVy.png
Here are the window.resources:
<Style x:Key="mdTabControl" TargetType="TabControl">
<Setter Property="TextElement.Foreground" Value="{DynamicResource MaterialDesignBody}"/>
<Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"></Setter>
</Style>
<Style x:Key="mdTabHeader" TargetType="{x:Type TabItem}">
<Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"></Setter>
<Setter Property="Foreground" Value="{DynamicResource MaterialDesignBody}"></Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Grid>
<Border Name="Border" Margin="1,0,1,0" CornerRadius="3 3 0 0">
<ContentPresenter x:Name="ContentSite" VerticalAlignment="Center"
HorizontalAlignment="Center"
ContentSource="Header" Margin="10,2,10,2"
RecognizesAccessKey="True">
</ContentPresenter>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Panel.ZIndex" Value="100" />
<Setter TargetName="Border" Property="Background" Value="{StaticResource SecondaryAccentBrush}" />
<Setter Property="Foreground" Value="{StaticResource SecondaryAccentForegroundBrush}"/>
</Trigger>
<Trigger Property="IsSelected" Value="False">
<Setter Property="Panel.ZIndex" Value="100" />
<Setter TargetName="Border" Property="Background" Value="{StaticResource PrimaryHueMidBrush}" />
<Setter Property="Foreground" Value="{StaticResource PrimaryHueMidForegroundBrush}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="{StaticResource PrimaryHueDarkBrush}" />
<Setter Property="Foreground" Value="{StaticResource PrimaryHueDarkForegroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The error appears when I change the mdTabControl style targetType to:
TargetType="dbz:TabablzControl"
I want to keep the style I set to the TabControl, but with the added functionality of the TabablzControl
Any help will be appreciated

First thing to note, which is a general WPF characteristic, you are not using style inheritance correctly.
As you are using Material Design with Dragablz, if you are restyling the tab control itself, you must inherit from the Material Design style in the Dragablz assembly using BasedOn:
<Style x:Key="mdTabControl" TargetType="TabControl" BasedOn="{StaticResource MaterialDesignTabablzControlStyle}">
<Setter Property="TextElement.Foreground" Value="{DynamicResource MaterialDesignBody}"/>
<Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"></Setter>
</Style>
Again, with the tab header itself, you need to inherit from the relevant style:
<Style x:Key="mdTabHeader" TargetType="{x:Type TabItem}" BasedOn="{StaticResource MaterialDesignDragableTabItemStyle}">
. . .
</Style>
Note, that (depending you your App.xaml setup) you probably need to make sure the correct resource dictionary is included in the same XAML file. For example a more complete XAML might be:
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/Dragablz;component/Themes/materialdesign.xaml" />
</ResourceDictionary.MergedDictionaries>
<Style x:Key="NormalTabItemStyle" TargetType="{x:Type dragablz:DragablzItem}" BasedOn="{StaticResource MaterialDesignDragableTabItemStyle}">
<Setter Property="Width" Value="280" />
<Setter Property="Padding" Value="1" />
</Style>
. . .
</ResourceDictionary>
</Window.Resources>
Finally, as you are changing the TabItem style, you either need to the TabablzCOntrol style the correct style, or you could use it where you actually declare the TabablzControl itself:
<dragablz:TabablzControl ItemContainerStyle="{StaticResource mdTabHeader}" />
A good example of all this in action is in the SidePanels project in the demo solution at: https://github.com/ButchersBoy/DragablzSamplez

<Style TargetType="{x:Type dragablz:TabablzControl}" BasedOn="{StaticResource MaterialDesignTabablzControlStyle}"/>

Set tooltip max width style

Ok, i know my question might be super dumb- but i couldn't find the solution my self- so here i am- asking your help:
in wpf i have a DataGrid with different styles.
now, i need to set the tooltip max width.
this is my DataGridCell style:
<Style TargetType="DataGridCell" x:Key="MyDataGridCellStyle">
<EventSetter Event="PreviewMouseLeftButtonDown" Handler="DataGridCell_PreviewMouseLeftButtonDown" />
<EventSetter Event="PreviewTextInput" Handler="DataGridCell_PreviewTextInput" />
<Setter Property="FontSize" Value="14" />
<Setter Property="Foreground" Value="Black" />
<Setter Property="Background" Value="White" />
<Setter Property="FontFamily" Value="Arial" />
<Setter Property="Validation.ErrorTemplate" Value="{x:Null}"/>
<Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self},Path=Content.Text}"/>
</Style>
how do i add to the tooltip the max width style?

Try this please
Keep this code
<Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self},Path=Content.Text}"/>
and add this to your datagrid
<DataGrid.Resources>
<Style TargetType="ToolTip">
<Setter Property="MaxWidth" Value="20" />
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<ContentPresenter Content="{TemplateBinding Content}" >
<ContentPresenter.Resources>
<Style TargetType="{x:Type TextBlock}">
<Setter Property="TextWrapping" Value="Wrap" />
</Style>
</ContentPresenter.Resources>
</ContentPresenter>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</DataGrid.Resources>

Is what you tried to put your tooltip in a textblock
<Setter Property="ToolTip">
<Setter.Value>
<TextBlock MaxWidth="..." TextWrapping="Wrap" Text ="{Binding RelativeSource={RelativeSource Self},Path=Content.Text}"/>
</Setter.Value>
</Setter>

Style list item based on its property

I am pretty new to WPF and I am trying to build a quite simple application using MVVM light.
In my MainWindow.xaml (view) I have this :
<ListBox ItemsSource="{Binding InstalledVersions}"
ItemTemplate="{StaticResource VersionsDataTemplate}"
Style="{StaticResource VersionsStyle}"
ItemContainerStyle="{StaticResource VersionItemStyle}"/>
Where InstalledVersions is a list of InstalledVersionViewModel
In my MainWindowResources.xaml I have this (simplified) :
<DataTemplate x:Key="VersionsDataTemplate"
DataType="{x:Type viewmodels:InstalledVersionViewModel}">
<Grid>
<TextBlock Text="{Binding VersionNumber}" />
<TextBlock Text="{Binding FolderPath}" />
</Grid>
</DataTemplate>
<Style x:Key="VersionsStyle"
TargetType="{x:Type ListBox}">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Setter Property="VerticalContentAlignment" Value="Center" />
</Style>
<Style x:Key="VersionItemStyle"
TargetType="{x:Type ListBoxItem}">
<Setter Property="Background" Value="White" />
</Style>
I wish to have a different background depending on the "IsActive" property of my InstalledVersionViewModel.
I tried to add this (as well as several variations of it) to my VersionItemStyle but (as I suspected, mostly because I don't understand what I'm doing) it doesn't work :
<Style.Triggers>
<Trigger Property="{Binding Path=DataContext.IsActive, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type viewmodels:InstalledVersionViewModel}}}" Value="True">
<Setter Property="Background" Value="Red" />
</Trigger>
</Style.Triggers>
Thanks !

Since IsActive is part of view model against each row you can achieve that with DataTrigger
<Style x:Key="VersionItemStyle" TargetType="{x:Type ListBoxItem}">
<Setter Property="Background" Value="White" />
<Style.Triggers>
<DataTrigger Binding="{Binding IsActive}" Value="True">
<Setter Property="Background" Value="Red" />
</DataTrigger>
</Style.Triggers>
</Style>