WPF XAML Styles not applying properly (.NET 5) - c#

I'm trying to apply 2 custom styles to 2 Buttons on a UserControl.
Here I have the Styles defined in a Buttons.xaml ResourceDictionary which is properly registered as a ResourceDictionary in App.xaml.
<!-- Contained button -->
<Style TargetType="{x:Type Button}" x:Key="MaterialContainedButton">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Background" Value="{StaticResource PrimaryBrush}" />
<Setter Property="Foreground" Value="{StaticResource ForegroundLightBrush}" />
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Padding" Value="8" />
<Setter Property="MinWidth" Value="64" />
<Setter Property="Height" Value="36" />
<Setter Property="Cursor" Value="Hand" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border
Padding="{TemplateBinding Padding}"
Background="{TemplateBinding Background}"
CornerRadius="3">
<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" FontWeight="Medium" Text="{TemplateBinding Content}" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{StaticResource PrimaryLightBrush}" />
</Trigger>
</Style.Triggers>
</Style>
<!-- Outlined button -->
<Style TargetType="{x:Type Button}" x:Key="MaterialOutlinedButton">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{StaticResource PrimaryBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource PrimaryBrush}" />
<Setter Property="Padding" Value="8" />
<Setter Property="MinWidth" Value="64" />
<Setter Property="Height" Value="36" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border
Padding="{TemplateBinding Padding}"
Background="{TemplateBinding Background}"
BorderThickness="1"
CornerRadius="3">
<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" FontWeight="Medium" Text="{TemplateBinding Content}" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{StaticResource PrimaryBrush}" />
<Setter Property="Foreground" Value="{StaticResource ForegroundLightBrush}" />
</Trigger>
</Style.Triggers>
</Style>
And the two Buttons on my UserControl are defined as follows:
<StackPanel
Grid.Row="2"
Grid.ColumnSpan="2"
Orientation="Horizontal"
HorizontalAlignment="Right"
VerticalAlignment="Bottom">
<Button
Style="{StaticResource MaterialOutlinedButton}"
Content="CANCEL"
Margin="10"
/>
<Button
Style="{StaticResource MaterialContainedButton}"
Content="SAVE"
Margin="10"
/>
</StackPanel>
I have 2 problems with this code:
For some reason the BorderThickness Property in the second style doesn't apply to its respective Button.
The Buttons differ in Height although they should have the same Height based on their styles
All other styles in my Buttons.xaml file work just fine, it's just these two that just don't seem to work as they should. If anyone has any idea how to solve this issue I would greatly appreciate it.

Related

WPF - Hide Selected Item / Text Box portion from Combobox Control

I'm looking for a way to hide the Selected Item / Textbox portion of the wpf combobox, leaving only the drop down button so users can still interact with the list.
I cannot find a property to toggle this behaviour, I was curious to know if there is a way to change visibility of certain portions of this control?
If anyone has any suggestions, It'd be greatly appreciated.

The easiest way to hide the text part is probably to set the Width of the ComboBox:
<ComboBox Width="20" />
Otherwise, you could always define your own custom ControlTemplate and set the Template property to this one but this requires some more effort.

EDIT - To use the below code you will need to use ComboBoxStyleWithoutText as a style on your combobox
To achieve this I had to re-create a combo-box and edit the template itself whilst tweaking the individual styles to suit the colour scheme of our app.
This is the result
In the application
Please feel free to use the code below, it likely has some custom colours I've used from other dictionaries (Change these to whatever suits your app)
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Shared.xaml" />
<ResourceDictionary Source="Colours.xaml" />
<ResourceDictionary Source="Brushes.xaml" />
</ResourceDictionary.MergedDictionaries>
<!-- SimpleStyles: ComboBox -->
<ControlTemplate x:Key="ComboBoxToggleButton"
TargetType="ToggleButton">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Border x:Name="Border"
Grid.ColumnSpan="2"
CornerRadius="2"
Background="{StaticResource ScreenBackgroundBrush}"
BorderBrush="{StaticResource GridBorderBrush}"
BorderThickness="2" />
<Border Grid.Column="0"
CornerRadius="2,0,0,2"
Margin="1"
Background="{StaticResource ScreenBackgroundBrush}"
BorderBrush="{StaticResource GridBorderBrush}"
BorderThickness="1,1,1,1" />
<Path x:Name="Arrow"
Grid.Column="1"
Fill="{StaticResource SecondaryControlBrush}"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Data="M 0 0 L 4 4 L 8 0 Z" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsMouseOver"
Value="true">
<Setter TargetName="Border"
Property="Background"
Value="{StaticResource DataGridHeaderRowBackgroundBrush}" />
</Trigger>
<Trigger Property="ToggleButton.IsChecked"
Value="true">
<Setter TargetName="Border"
Property="Background"
Value="{StaticResource DataGridHeaderRowBackgroundBrush}" />
</Trigger>
<Trigger Property="IsEnabled"
Value="False">
<Setter Property="Opacity"
Value="0.25" />
<Setter TargetName="Border"
Property="Background"
Value="{StaticResource DisabledBackgroundBrush}" />
<Setter TargetName="Border"
Property="BorderBrush"
Value="{StaticResource DisabledBorderBrush}" />
<Setter Property="Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
<Setter TargetName="Arrow"
Property="Fill"
Value="{StaticResource DisabledForegroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox"
TargetType="TextBox">
<Border x:Name="PART_ContentHost"
Focusable="False"
Background="{TemplateBinding Background}" />
</ControlTemplate>
<Style x:Key="ComboBoxStyleWithoutText" TargetType="{x:Type ComboBox}">
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll" Value="true" />
<Setter Property="MinWidth" Value="0" />
<Setter Property="MinHeight" Value="20" />
<Setter Property="Background" Value="Green" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0"></ColumnDefinition>
<ColumnDefinition MinWidth="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}" Width="0"/>
</Grid.ColumnDefinitions>
<ToggleButton Name="ToggleButton"
Template="{StaticResource ComboBoxToggleButton}"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Press">
</ToggleButton>
<ContentPresenter Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="3,3,3,3"
VerticalAlignment="Center"
HorizontalAlignment="Left" />
<TextBox x:Name="PART_EditableTextBox"
Style="{x:Null}"
Template="{StaticResource ComboBoxTextBox}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Margin="3,3,3,3"
Focusable="True"
Visibility="Hidden"
IsReadOnly="{TemplateBinding IsReadOnly}" />
<Popup Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Slide">
<Grid Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder"
Background="{StaticResource TextBoxBrush}"
BorderThickness="2"
BorderBrush="{StaticResource SolidBorderBrush}" />
<ScrollViewer Margin="4,6,2,2"
SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True"
KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems"
Value="false">
<Setter TargetName="DropDownBorder"
Property="MinHeight"
Value="95" />
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
</Trigger>
<Trigger Property="IsGrouping"
Value="true">
<Setter Property="ScrollViewer.CanContentScroll"
Value="false" />
</Trigger>
<Trigger SourceName="Popup"
Property="Popup.AllowsTransparency"
Value="true">
<Setter TargetName="DropDownBorder"
Property="CornerRadius"
Value="4" />
<Setter TargetName="DropDownBorder"
Property="Margin"
Value="0,2,0,0" />
</Trigger>
<Trigger Property="IsEditable"
Value="true">
<Setter Property="IsTabStop"
Value="false" />
<Setter TargetName="PART_EditableTextBox"
Property="Visibility"
Value="Visible" />
<Setter TargetName="ContentSite"
Property="Visibility"
Value="Hidden" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
</Style.Triggers>
</Style>
<Style x:Key="{x:Type ComboBox}"
TargetType="ComboBox">
<Setter Property="SnapsToDevicePixels"
Value="true" />
<Setter Property="OverridesDefaultStyle"
Value="true" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility"
Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll"
Value="true" />
<Setter Property="MinWidth"
Value="120" />
<Setter Property="MinHeight"
Value="20" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton Name="ToggleButton"
Template="{StaticResource ComboBoxToggleButton}"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Press">
</ToggleButton>
<ContentPresenter Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="3,3,23,3"
VerticalAlignment="Center"
HorizontalAlignment="Left" />
<TextBox x:Name="PART_EditableTextBox"
Style="{x:Null}"
Template="{StaticResource ComboBoxTextBox}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Margin="3,3,23,3"
Focusable="True"
Visibility="Hidden"
IsReadOnly="{TemplateBinding IsReadOnly}" />
<Popup Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Slide">
<Grid Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder"
Background="{StaticResource TextBoxBrush}"
BorderThickness="2"
BorderBrush="{StaticResource SolidBorderBrush}" />
<ScrollViewer Margin="4,6,4,6"
SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True"
KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems"
Value="false">
<Setter TargetName="DropDownBorder"
Property="MinHeight"
Value="95" />
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
</Trigger>
<Trigger Property="IsGrouping"
Value="true">
<Setter Property="ScrollViewer.CanContentScroll"
Value="false" />
</Trigger>
<Trigger SourceName="Popup"
Property="Popup.AllowsTransparency"
Value="true">
<Setter TargetName="DropDownBorder"
Property="CornerRadius"
Value="4" />
<Setter TargetName="DropDownBorder"
Property="Margin"
Value="0,2,0,0" />
</Trigger>
<Trigger Property="IsEditable"
Value="true">
<Setter Property="IsTabStop"
Value="false" />
<Setter TargetName="PART_EditableTextBox"
Property="Visibility"
Value="Visible" />
<Setter TargetName="ContentSite"
Property="Visibility"
Value="Hidden" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
</Style.Triggers>
</Style>
<!-- SimpleStyles: ComboBoxItem -->
<Style x:Key="{x:Type ComboBoxItem}"
TargetType="ComboBoxItem">
<Setter Property="SnapsToDevicePixels"
Value="true" />
<Setter Property="OverridesDefaultStyle"
Value="true" />
<Setter Property="Background"
Value="{StaticResource ScreenBackgroundBrush}"/>
<Setter Property="Foreground"
Value="{StaticResource PrimaryTextBrush}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Border Name="Border"
Padding="2"
SnapsToDevicePixels="true">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsHighlighted"
Value="true">
<Setter TargetName="Border"
Property="Background"
Value="{StaticResource DataGridRowSelectedBrush}" />
<Setter TargetName="Border"
Property="CornerRadius"
Value="2" />
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Buttons' background being flickering or disappearing on Mouse Over

I added a custom style on Mouse Over effect for the button in Resource Dictionary inside the App.xaml file. While on my computer, it is working perfectly but on some PC the button's background is flickering or disappearing on mouseover.
App.xaml Code
<ResourceDictionary>
<Style x:Key="btn-danger" TargetType="{x:Type Button}">
<Setter Property="Background" Value="#d84315" />
<Setter Property="Foreground" Value="White" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}" Cursor="Hand">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#d9534f" />
<Setter Property="FontWeight" Value="Bold" />
</Trigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
How is it being used
<Button Style="{StaticResource btn-danger}" Margin="5" Click="Ok_Button_Click" Height="29" Width="100" Content="{Binding Path=Ok, Source={StaticResource Resources}}"/>

It is necessary to put the trigger under the template property, to border background be changed properly. Try to change the style definition as below:
<ResourceDictionary>
<Style x:Key="btn-danger" TargetType="{x:Type Button}">
<Setter Property="Background" Value="Gray" />
<Setter Property="Foreground" Value="White" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}" Cursor="Hand">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#d9534f" />
<Setter Property="FontWeight" Value="Bold" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>

How to change DataGrid selected row color WPF

I have created a data grid in my WPF application. I want to change the selected row color. I have following code
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:navigationApp.Resources">
<Style x:Key="DataGridColumnHeaderGripper" TargetType="Thumb">
<Setter Property="Width" Value="18"/>
<Setter Property="Background" Value="#252526"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Border Padding="{TemplateBinding Padding}" Background="Transparent" BorderBrush="#3e3e45">
<Rectangle HorizontalAlignment="Center" Width="1" Fill="{TemplateBinding Background}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="Padding" Value="8,5" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Grid Background="Transparent">
<ContentPresenter
Margin="{TemplateBinding Padding}"
Content="{TemplateBinding ContentControl.Content}"
ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}"
SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type DataGridRow}">
<Setter Property="Margin" Value="0"/>
<Setter Property="HorizontalAlignment" Value="Stretch" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridRow}">
<Grid>
<Border x:Name="BorderOutline" BorderThickness="2,1,1,1" />
<Border x:Name="BorderInline" BorderThickness="0" />
<Grid Background="Black" Opacity="0" />
<SelectiveScrollingGrid>
<SelectiveScrollingGrid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</SelectiveScrollingGrid.ColumnDefinitions>
<SelectiveScrollingGrid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</SelectiveScrollingGrid.RowDefinitions>
<DataGridCellsPresenter
ItemsPanel="{TemplateBinding ItemsControl.ItemsPanel}"
SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}"
Grid.Column="1" />
<DataGridDetailsPresenter
Visibility="{TemplateBinding DataGridRow.DetailsVisibility}"
Grid.Column="1"
Grid.Row="1"
SelectiveScrollingGrid.SelectiveScrollingOrientation="Both" />
<DataGridRowHeader
Visibility="Visible"
Grid.RowSpan="2"
SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical" />
</SelectiveScrollingGrid>
</Grid>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True" />
<Condition Property="IsSelected" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="BorderBrush" Value="{DynamicResource ApplicationAccentBrush}" TargetName="BorderOutline" />
<Setter Property="Opacity" Value="0.8" TargetName="BorderOutline" />
<Setter Property="Background" Value="{DynamicResource ApplicationAccentBrushSecondary}" TargetName="BorderInline" />
<Setter Property="Opacity" Value="0.2" TargetName="BorderInline" />
</MultiTrigger>
<Trigger Property="IsSelected" Value="True">
<Setter Property="BorderBrush" Value="{DynamicResource ApplicationAccentBrush}" TargetName="BorderOutline" />
<Setter Property="Background" Value="{DynamicResource ApplicationAccentBrushSecondary}" TargetName="BorderInline" />
<Setter Property="Opacity" Value="0.3" TargetName="BorderInline" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Foreground" Value="White" />
<Setter Property="Padding" Value="8,2,8,2"/>
<Setter Property="Background" Value="#252526"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridColumnHeader}">
<Grid>
<Border Name="HeaderBorder" Padding="{TemplateBinding Padding}" BorderThickness="1,1,1,1" BorderBrush="#3e3e45" Background="#252526">
<ContentPresenter
Name="HeaderContent"
Margin="0,0,0,1"
RecognizesAccessKey="True"
Content="{TemplateBinding ContentControl.Content}"
ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}"
HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}"
SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
</Border>
<!--<Thumb x:Name="PART_HeaderGripper" HorizontalAlignment="Right" Margin="0,0,-9,0" Style="{StaticResource DataGridColumnHeaderGripper}"/>-->
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="HeaderBorder" Property="Background" Value="{DynamicResource ApplicationAccentBrushSecondary}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="HeaderBorder" Property="Background" Value="{DynamicResource ApplicationAccentBrush}"/>
<Setter TargetName="HeaderContent" Property="Margin" Value="1,1,0,0"/>
</Trigger>
<Trigger Property="Selector.IsSelected" Value="True">
<Setter Property="TextElement.Foreground" Value="White"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
Currently, the selected row color is white or transperent. So i cant see the selected row details.

You can change the color of the selected row by using triggers.As shown in the datagridrow style. Set the color to the background property of parent control (i.e Grid as TargetName) when row is selected .
<Style TargetType="{x:Type DataGridRow}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridRow}">
<Grid x:Name="selectedRow">
<DataGridCellsPresenter
ItemsPanel="{TemplateBinding ItemsControl.ItemsPanel}"
SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}"
Grid.Column="1" />
<DataGridDetailsPresenter
Visibility="{TemplateBinding DataGridRow.DetailsVisibility}"
Grid.Column="1"
Grid.Row="1"
SelectiveScrollingGrid.SelectiveScrollingOrientation="Both" />
<DataGridRowHeader
Visibility="Visible"
Grid.RowSpan="2"
SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical" />
</SelectiveScrollingGrid>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="{DynamicResource ApplicationAccentBrushSecondary}" TargetName="selectedRow" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

In my project, I did as followed:
<Style TargetType="{x:Type DataGridCell}" BasedOn="{StaticResource DataGridCell}">
<Setter Property="Background" Value="{StaticResource DataGridCellBackgroundBrush}"/>
<Setter Property="BorderBrush" Value="{StaticResource DataGridBorderBrush}" />
<Setter Property="BorderThickness" Value="0"/>
<Style.Triggers>
<!-- IsSelected -->
<Trigger Property="IsSelected" Value="True">
<Setter Property="Foreground" Value="{StaticResource BlackBrush}" />
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Controls:DataGridCellHelper.IsCellOrRowHeader" Value="True" />
<Condition Property="IsSelected" Value="True" />
</MultiTrigger.Conditions>
<Setter Property="Background" Value="{StaticResource DataGridCellBackgroundBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource DataGridCellBackgroundBrush}" />
</MultiTrigger>
//others properties
DataGridCellBackgroundBrush and DataGridBorderBrush is my color predefined

Modify Properties inside a Style programmatically

I've got the following style defined in the resources of a UserControl:
<Style x:Key="MenuItemButton" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Width="40" Height="40" Background="{TemplateBinding Background}" BorderBrush="Transparent" BorderThickness="1,1,1,1" CornerRadius="3">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Button.Foreground" Value="#666666" />
<Setter Property="Button.Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Button.Cursor" Value="Hand" />
<Setter Property="Button.Foreground" Value="White" />
<Setter Property="Button.Background" Value="#666666" />
</Trigger>
</Style.Triggers>
</Style>
For example I use it like the following:
<Button Click="Toolbar_DocumentMarkup_Click" Name="BtnUnderline" Margin="10,0,0,0" Style="{StaticResource MenuItemButton}">
<fa:FontAwesome VerticalAlignment="Center" Icon="Underline" FontSize="24"/>
</Button>
I need to set the border's width and the height programmatically from the code behind so that the view will be updated on runtime.
What I tried so far:
Access the style through the Resources:
var style = Resources["MenuItemButton"] as Style
but I can't find the right properties in this style object.
Another idea:
Define the width and height as DependencyProperties or implement INotifyPropertyChanged, but I think in my case it's much easier to just set these two values programmatically.
Some oppinions or suggestions on this problem?

Add this to your resources:
<sys:Double x:Key="ButtonHeight">200</sys:Double>
<sys:Double x:Key="ButtonWidth">200</sys:Double>
<Style x:Key="MenuItemButton" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Width="40" Height="40" Background="{TemplateBinding Background}" BorderBrush="Transparent" BorderThickness="1,1,1,1" CornerRadius="3">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Height" Value="{DynamicResource ButtonHeight}" />
<Setter Property="Width" Value="{DynamicResource ButtonWidth}" />
<Setter Property="Button.Foreground" Value="#666666" />
<Setter Property="Button.Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Button.Cursor" Value="Hand" />
<Setter Property="Button.Foreground" Value="White" />
<Setter Property="Button.Background" Value="#666666" />
</Trigger>
</Style.Triggers>
And then in your code behind you change it in your event using:
this.Resources["ButtonHeight"] = ...
and
this.Resources["ButtonWidth"] = ...
EDIT: forgot that of course you need to add the path to system
xmlns:sys="clr-namespace:System;assembly=mscorlib"

How to add column header gripper to a custom style of column header in ListView in WPF?

So, this is my style. How I can add a gripper to it?
I did not find a way to do it :с
<Style x:Key="CustomHeaderStyle" TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{DynamicResource ForegroundBrush}"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="FontFamily" Value="Segoe UI" />
<Setter Property="FontSize" Value="12" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<Border BorderThickness="1,1,1,1" BorderBrush="{DynamicResource AccentBrushWithLowOpacity}" Background="Transparent">
<TextBlock x:Name="ContentHeader" Text="{TemplateBinding Content}" Width="{TemplateBinding Width}" TextAlignment="Center" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

You edited them out yourself my friend.
You can find the default Style and Template here:
https://msdn.microsoft.com/en-us/library/ff506248(v=vs.110).aspx

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