I'm trying set backcolor for all grid layout in my project using resource dictionary. This is code of file where i modify my grid.
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Theme">
<SolidColorBrush x:Key="GridBackColor" Color="Red"/>
<Style TargetType="Grid">
<Setter Property="Background" Value="{StaticResource GridBackColor}"/>
<Setter Property="Opacity" Value="0.5"/>
</Style>
</ResourceDictionary>
After set Background property all controls on grid were disappear, but when i set opacity i can only say that all controls are under grid layout and any mouse events not work.
Here how it's look like:
this is my window code.
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10*"/>
<ColumnDefinition Width="125"/>
<ColumnDefinition Width="20"/>
<ColumnDefinition Width="125"/>
<ColumnDefinition Width="10*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="10*"/>
<RowDefinition Height="40"/>
<RowDefinition Height="40"/>
<RowDefinition Height="20"/>
<RowDefinition Height="30"/>
<RowDefinition Height="10*"/>
</Grid.RowDefinitions>
<Label Content="Name" Grid.Column="1" Grid.Row="1" Grid.ColumnSpan="3" FontSize="20"
HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
<TextBox Name="TbName" Grid.Column="1" Grid.Row="2" Grid.ColumnSpan="3" FontSize="20"
HorizontalAlignment="Stretch" />
<Button Content="Add" Name="BtAdd" Grid.Column="1" Grid.Row="4" IsDefault="True"
HorizontalAlignment="Right" VerticalAlignment="Center" Width="100" Click="BtAdd_Click"/>
<Button Content="Close" Name="BtClose" Grid.Column="3" Grid.Row="4" IsCancel="True"
HorizontalAlignment="Left" Width="100" Click="BtClose_Click"/>
</Grid>
When you applied you style globally to all the Grids in your application, the ones used inside other controls will also be affected. For instance take a look at the Window control (from the vs designer, left click on the window > Edit Template > Edit a copy)
<Window.Resources>
<ControlTemplate x:Key="WindowTemplateKey" TargetType="{x:Type Window}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid>
<AdornerDecorator>
<ContentPresenter/>
</AdornerDecorator>
<ResizeGrip x:Name="WindowResizeGrip" HorizontalAlignment="Right" IsTabStop="false" Visibility="Collapsed" VerticalAlignment="Bottom"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ResizeMode" Value="CanResizeWithGrip"/>
<Condition Property="WindowState" Value="Normal"/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="WindowResizeGrip" Value="Visible"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="WindowStyle1" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Window}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<AdornerDecorator>
<ContentPresenter/>
</AdornerDecorator>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="ResizeMode" Value="CanResizeWithGrip">
<Setter Property="Template" Value="{StaticResource WindowTemplateKey}"/>
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
Notice the Grid defined in the Border inside the ControlTemplate.
An easy fix to your issue is to assign a key to your style and assign it to the Grid manually:
<Style TargetType="Grid" x:Key="GridStyle">
<Setter Property="Background" Value="{StaticResource GridBackColor}"/>
<Setter Property="Opacity" Value="0.5"/>
</Style>
To use it:
<Grid Style="{StaticResource GridStyle}">
...
</Grid>
Related
Is there a way on how to open the Calendar Window when clicking DatePickerTextBox ?
Currently, It will open when clicking the "PART_Button" button.
So I want to also open at DatePickerTextBox "PART_TextBox"
Below is my code.
<Style TargetType="{x:Type DatePicker}">
<Setter Property="CalendarStyle" Value="{StaticResource Calendar_Style}" />
<Setter Property="FontFamily" Value="/Fonts/#Poppins"/>
<Setter Property="FontSize" Value="15" />
<Setter Property="FontWeight" Value="Regular"/>
<Setter Property="BorderThickness" Value="1" />
<Setter Property="SelectedDateFormat" Value="Short"/>
<Setter Property="Padding" Value="2"/>
<Setter Property="Focusable" Value="True" />
<Setter Property="IsHitTestVisible" Value="True" />
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Background" Value="{DynamicResource Background}"/>
<Setter Property="BorderBrush" Value="White"/>
<Setter Property="Foreground" Value="{DynamicResource Text}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DatePicker}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" CornerRadius="4">
<Grid x:Name="PART_Root" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<DatePickerTextBox x:Name="PART_TextBox" Grid.Column="0" Grid.Row="0" Focusable="True" HorizontalAlignment="Left" Padding="5,0,0,0" VerticalAlignment="Center" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch"
IsReadOnly="True" Background="{DynamicResource Background}" Foreground="White"
Style="{StaticResource DatePickerTextBoxStyle}" Grid.ColumnSpan="2" />
<Button x:Name="PART_Button" Grid.Column="1" Grid.Row="0" HorizontalAlignment="Right" VerticalAlignment="Center" Width="40" Height="40" BorderBrush="{x:Null}">
<iconPacks:Octicons Kind="Calendar"/>
</Button>
<Grid x:Name="PART_DisabledVisual" Grid.ColumnSpan="2" Grid.Column="0" IsHitTestVisible="False" Opacity="0" Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Rectangle Grid.Column="1" Fill="Black" RadiusY="1" Grid.Row="0" RadiusX="1"/>
<Rectangle Grid.Column="0" Fill="Black" Height="18" Margin="3,0,3,0" RadiusY="1" Grid.Row="0" RadiusX="1" Width="19"/>
<Popup x:Name="PART_Popup" AllowsTransparency="True" Placement="Bottom" PlacementTarget="{Binding ElementName=PART_TextBox}" StaysOpen="False"/>
</Grid>
</Grid>
</Border>
<ControlTemplate.Triggers>
<DataTrigger Binding="{Binding Source={x:Static SystemParameters.HighContrast}}" Value="false">
<Setter Property="Foreground" TargetName="PART_TextBox" Value="{Binding Foreground, RelativeSource={RelativeSource TemplatedParent}}"/>
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="BorderBrush" Value="{DynamicResource MainBrush}"/>
</Trigger>
</Style.Triggers>
</Style>
Thank you very much.
You should be able to add a mouse event where you're using the DatePicker to open the dropdown for the calendar using:
private void OnClick(object sender, RoutedEventArgs e)
{
datePicker.IsDropDownOpen = true;
}
Alternatively, you could implement a custom control over the top of the DatePicker to handle this from the control itself.
I have a 'plus' button (see image) inside big button. How execute command of 'plus' button.
'plus' button in my example is CreateNewFolderButton(first style) and locate in Grid.Column=2 of MakeNewFolderButton(second style).
Tinkering with WindowChrome.IsHitTestVisibleInChrome and IsHitTestVisible doesn't help.
How to get access to the 'plus' button and execute its command with MVVM?
<Style x:Key="CreateNewFolderButton" TargetType="{x:Type Button}" BasedOn="{StaticResource HoverLess}">
<Setter Property="ToolTip" Value="Create Folder"/>
<Setter Property="WindowChrome.IsHitTestVisibleInChrome" Value="True"/>
<Setter Property="IsHitTestVisible" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ButtonBase}">
<Grid >
<Ellipse Width="{StaticResource WidthNavigationAndCreation}" Height="{StaticResource HeightNavigationAndCreation}" />
<Ellipse Width="{StaticResource WidthNavigationAndCreation}" Height="{StaticResource HeightNavigationAndCreation}" x:Name="image" >
<Ellipse.Fill>
<ImageBrush ImageSource="{DynamicResource AddFolder}" />
</Ellipse.Fill>
</Ellipse>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Fill" TargetName="image" Value="{DynamicResource IBAddFolderMouseOver}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="MakeNewFolderButton" TargetType="{x:Type Button}" BasedOn="{StaticResource FolderFileButtons}">
<Setter Property="IsHitTestVisible" Value="False"/>
<Setter Property="WindowChrome.IsHitTestVisibleInChrome" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ButtonBase}">
<Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="0 0 0 0.5">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Image Width="{StaticResource WidthFolderAndFilesIcon}"
Height="{StaticResource HeightFolderAndFilesIcon}" Source="/Images/FolderAndFiles/BlackEmptyFolder48x48.png"/>
<TextBox Grid.Column="1" Style="{StaticResource TextBoxEnterFileCreation}"
Tag="New Folder Name"
Text="{Binding RelativeSource={RelativeSource AncestorType=Window},
Path=DataContext.NewFolderName, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
<Button Grid.Column="2" Style="{StaticResource CreateNewFolderButton}"
Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.MakeFolder}"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="border" Value="{StaticResource ButtonBackgroundMouseOver}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
'Plus' button inside big button
As I wrote in comment this code works:
<Button Content="Outer button" Command="{Binding TestCmd}">
<Button.Template>
<ControlTemplate TargetType="ButtonBase">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="AUTO" />
<ColumnDefinition Width="AUTO" />
</Grid.ColumnDefinitions>
<Label Grid.Column="0" Content="LABEL CONTENT" Foreground="BlueViolet"/>
<Button Grid.Column="1" Content="INNER BUTTON" Command="{Binding TestCmd2}"/>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
So if you press "INNER BUTTON" the TestCmd2 being executed and if you click a "LABEL CONTENT" the TestCmd being executed.
Is it possible to create some sort of base expander style and override the background color of the header in a derived style?
In my application I'm using expanders a lot and I would like to change the background color of the header. I know I could just copy&paste my style and edit the color, but it would be nicer to just create a new style based on the "base style" and setting the header's background color.
But I do not know how to access this color.
It's the color of this line: below I'd like to change (the border in the header): Border Name="border"... I cannot access "border" in the setter of the derived style...
This is my (base) style:
<Style TargetType="Expander" x:Key="ExpanderStyle">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextColor}}"/>
<Setter Property="Template">
<Setter.Value>
<!-- Control template for expander -->
<ControlTemplate TargetType="Expander" x:Name="exp">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Name="ContentRow" Height="0"/>
</Grid.RowDefinitions>
<Border Name="border" Grid.Row="0" Background="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" BorderThickness="1" CornerRadius="4,4,0,0" >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<ToggleButton x:Name="tb" FontFamily="Marlett" FontSize="9.75" Background="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" Foreground="Black" Grid.Column="1" Content="u" IsChecked="{Binding Path=IsExpanded,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}" />
<ContentPresenter x:Name="HeaderContent" Grid.Column="0" Margin="4" ContentSource="Header" RecognizesAccessKey="True" />
</Grid>
</Border>
<Border x:Name="Content" Grid.Row="1" BorderThickness="1,0,1,1" CornerRadius="0,0,4,4" >
<ContentPresenter Margin="4" />
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="True">
<Setter TargetName="ContentRow" Property="Height" Value="{Binding ElementName=Content,Path=Height}" />
<Setter Property="Content" TargetName="tb" Value="t"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I would like to do something like this:
<Style x:Key="ExpanderStyleRed" BasedOn="{StaticResource ExpanderStyle}" TargetType="Expander">
<Setter Property="???" Value="Red"/>
<Style>
Use TemplateBinding:
<Style TargetType="Expander" x:Key="ExpanderStyle">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextColor}}"/>
<Setter Property="Template">
<Setter.Value>
<!-- Control template for expander -->
<ControlTemplate TargetType="Expander" x:Name="exp">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Name="ContentRow" Height="0"/>
</Grid.RowDefinitions>
<Border Name="border" Grid.Row="0" Background="{TemplateBinding Background}" BorderThickness="1" CornerRadius="4,4,0,0" >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<ToggleButton x:Name="tb" FontFamily="Marlett" FontSize="9.75" Background="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" Foreground="Black" Grid.Column="1" Content="u" IsChecked="{Binding Path=IsExpanded,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}" />
<ContentPresenter x:Name="HeaderContent" Grid.Column="0" Margin="4" ContentSource="Header" RecognizesAccessKey="True" />
</Grid>
</Border>
<Border x:Name="Content" Grid.Row="1" BorderThickness="1,0,1,1" CornerRadius="0,0,4,4" >
<ContentPresenter Margin="4" />
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="True">
<Setter TargetName="ContentRow" Property="Height" Value="{Binding ElementName=Content,Path=Height}" />
<Setter Property="Content" TargetName="tb" Value="t"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderStyleRed" BasedOn="{StaticResource ExpanderStyle}" TargetType="Expander">
<Setter Property="Background" Value="#2fff0000"/>
</Style>
And then:
<Grid>
<Expander x:Name="expander1" Style="{DynamicResource ExpanderStyle}" Header="Expander" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="7,10,0,0" Height="108">
<TextBlock Width="250" Height="150" TextWrapping="Wrap">
asklsaklsa saaskklsaklas alsaklalkjd
asklsaklsaklsa saklsaklsakl jsajkjska
saklsaklsakl sasa
</TextBlock>
</Expander>
<Expander x:Name="expander2" Style="{DynamicResource ExpanderStyleRed}" Header="Expander" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="12,126,0,0" Height="133">
<TextBlock Width="250" Height="150" TextWrapping="Wrap">
asklsaklsa saaskklsaklas alsaklalkjd
asklsaklsaklsa saklsaklsakl jsajkjska
saklsaklsakl sasa
</TextBlock>
</Expander>
</Grid>
I want to make custom style for doubleupdown button like on example.
Example:
What i have
main problem is that <RepeatButton x:Name="PART_IncreaseButton" Grid.Row="0" IsTabStop="{TemplateBinding IsTabStop}" Style="{StaticResource CustomRepeatButtonStyle}"/> does not respond when i am clickin on it why?
Xaml code of me freak:
<Window.Resources>
<Style x:Key="CustomRepeatButtonStyle" TargetType="{x:Type RepeatButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Grid x:Name="customgrid" Background="White">
<Polygon x:Name="custompolygon" Points="1,11 6,1 11,11" Fill="SkyBlue" VerticalAlignment="Center" HorizontalAlignment="Center">
</Polygon>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="custompolygon" Property="Fill" Value="black"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="CustomDoubleUpDownStyle" TargetType="{x:Type xctk:DoubleUpDown}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type xctk:DoubleUpDown}">
<Border BorderThickness="1" BorderBrush="Purple">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.3*"/>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<RepeatButton x:Name="PART_IncreaseButton" Grid.Row="0" IsTabStop="{TemplateBinding IsTabStop}" Style="{StaticResource CustomRepeatButtonStyle}"/>
<RepeatButton x:Name="PART_DecreaseButton" Grid.Row="1" IsTabStop="{TemplateBinding IsTabStop}"/>
</Grid>
<ContentPresenter Grid.Column="1" Content="{TemplateBinding Property=Value}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<xctk:DoubleUpDown Width="180" Height="70" Style="{StaticResource CustomDoubleUpDownStyle}" Value="20"/>
</Grid>
In your XAML there are no functions bound to the click event (or any other event). In other words: From the programs point of view there is nothing to do, when any of your buttons get clicked. Is this your problem?
In this case add event handlers and modify the counter in your model accordingly.
When developing a custom control in WPF I noticed a strange clipping behavior. When I resize the control under a certain minimum boundaries/tress-hold it decides to clip the top 24 pixels of the control for reasons I don't understand.
It would be much appreciated if somebody could explain how i can achieve the desired graphical effect without clipping behavior as illustrated.
The behavior occurs with the following XAML. Note that the XAML is a stripped down to make the it compliant with standard .net 4.0 controls.
<Style x:Key="{ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly={x:Type DataGrid}}" TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid>
<Rectangle x:Name="Border" Fill="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" SnapsToDevicePixels="True"/>
<Polygon x:Name="Arrow" Fill="Black" HorizontalAlignment="Right" Margin="8,8,3,3" Opacity="0.15" Points="0,10 10,10 10,0" Stretch="Uniform" VerticalAlignment="Bottom"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Stroke" TargetName="Border" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Fill" TargetName="Border" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Visibility" TargetName="Arrow" Value="Collapsed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="DataGridStyle1" TargetType="{x:Type DataGrid}">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderBrush" Value="#FF688CAF"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="RowDetailsVisibilityMode" Value="VisibleWhenSelected"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
<Setter Property="ScrollViewer.PanningMode" Value="Both"/>
<Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGrid}">
<Border Background="Transparent" Margin="0,24,0,0" >
<Border BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}"
SnapsToDevicePixels="True">
<ScrollViewer x:Name="DG_ScrollViewer" Focusable="false">
<ScrollViewer.Template>
<ControlTemplate TargetType="{x:Type ScrollViewer}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Button Grid.Row="0" Command="{x:Static DataGrid.SelectAllCommand}" Focusable="false" Style="{DynamicResource {ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly={x:Type DataGrid}}}" Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.All}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}" Width="{Binding CellsPanelHorizontalOffset, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
<DataGridColumnHeadersPresenter Grid.Row="0" x:Name="PART_ColumnHeadersPresenter" Grid.Column="1" Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.Column}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
<Grid VerticalAlignment="Top" Grid.Row="0" Grid.Column="1" Grid.ColumnSpan="1" ClipToBounds="False">
<Grid.RenderTransform>
<TranslateTransform Y="-24" />
</Grid.RenderTransform>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding NonFrozenColumnsViewportHorizontalOffset, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Rectangle Fill="Yellow" Grid.Row="1" Grid.ColumnSpan="3" Grid.Column="1" Height="48" />
</Grid>
</Grid>
</ControlTemplate>
</ScrollViewer.Template>
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</ScrollViewer>
</Border>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
</Style.Triggers>
</Style>
<DataGrid AutoGenerateColumns="False" HorizontalAlignment="Left" Margin="12,12,0,12" Name="dataGrid1" Width="868" FrozenColumnCount="2"
ScrollViewer.HorizontalScrollBarVisibility="Visible" CanUserSortColumns="False" CanUserReorderColumns="False"
AreRowDetailsFrozen="True" CanUserAddRows="False" Style="{StaticResource DataGridStyle1}"
ScrollViewer.VerticalScrollBarVisibility="Visible">
<DataGrid.Columns>
<DataGridTextColumn Header="Layer Name" Width="250" IsReadOnly="True" />
<DataGridHyperlinkColumn Header="" Width="150" IsReadOnly="True" />
<DataGridTemplateColumn Width="*" HeaderStyle="{StaticResource DataGridColumnHeaderStyle}" IsReadOnly="True">
<DataGridTemplateColumn.Header>
<Grid Height="18">
<TextBlock Text="100.0f" Margin="0,-10" />
</Grid>
</DataGridTemplateColumn.Header>
</DataGridTemplateColumn>
</DataGrid.Columns>
<DataGrid.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<StackPanel>
<TextBlock Text="test" />
<ItemsPresenter />
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</DataGrid.GroupStyle>
</DataGrid>
So after a few days of fiddling I found the culprit to be GetLayoutClip method. This method returns clipping geometry only if the bounds of the control is smaller than the minimum bounds.
Easiest solution to override this behavior was to make a custom control inherit from the said base control. And to construct new clipping geometry with the extra margin taken into account.