c#wpfxamldatagridwpftoolkit
How to style the top-left corner of a WPF Toolkit DataGrid in XAML?
Related to this question: How to style the top-left corner of a DataGrid in XAML?
How to customize style for top-left corner of WPF-Toolkit's DataGrid
XAML:
<Window x:Class="Matrix_WPFToolkit_Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:toolkit="http://schemas.microsoft.com/wpf/2008/toolkit"
Title="MainWindow" Height="350" Width="525">
<Grid>
<toolkit:DataGrid x:Name="dataGrid" IsReadOnly="True" HeadersVisibility="All" GridLinesVisibility="All" CanUserAddRows="False" CanUserDeleteRows="False" CanUserReorderColumns="False" CanUserResizeColumns="False" CanUserResizeRows="False" CanUserSortColumns="False" SelectionMode="Single" SelectionUnit="Cell" RowDetailsVisibilityMode="Visible" SelectionChanged="dataGrid_SelectionChanged" Margin="-1,0,1.4,0.4" SelectedCellsChanged="dataGrid_SelectedCellsChanged">
<toolkit:DataGrid.RowHeaderTemplate>
<DataTemplate>
<TextBlock Text="1"/>
</DataTemplate>
</toolkit:DataGrid.RowHeaderTemplate>
<toolkit:DataGrid.ColumnHeaderStyle>
<Style TargetType="toolkit:DataGridColumnHeader">
<Setter Property="Background" Value="Gray"/>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="BorderBrush" Value="Black"/>
</Style>
</toolkit:DataGrid.ColumnHeaderStyle>
<toolkit:DataGrid.RowHeaderStyle>
<Style TargetType="toolkit:DataGridRowHeader">
<Setter Property="Background" Value="Gray"/>
<Setter Property="FontWeight" Value="Bold"/>
</Style>
</toolkit:DataGrid.RowHeaderStyle>
<toolkit:DataGrid.CellStyle>
<Style TargetType="toolkit:DataGridCell">
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="Background" Value="LightGray" />
<Setter Property="Foreground" Value="Black" />
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="White"/>
</Trigger>
</Style.Triggers>
</Style>
</toolkit:DataGrid.CellStyle>
<toolkit:DataGrid.RowStyle>
<Style TargetType="toolkit:DataGridRow">
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="BorderBrush" Value="Black" />
<Setter Property="BorderThickness" Value="0" />
</Trigger>
</Style.Triggers>
</Style>
</toolkit:DataGrid.RowStyle>
</toolkit:DataGrid>
</Grid>
Here I have customized the row header template, column heade style, cell selection style. How to style top-left corner cell in the data-grid (WPF Toolkit's)
Solution
Try this, changing Fill color on IsMouseOver:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication2"
xmlns:Custom="http://schemas.microsoft.com/wpf/2008/toolkit"
x:Class="WpfApplication2.MainWindow"
mc:Ignorable="d"
Title="MainWindow" Height="300" Width="300">
<Window.Resources>
<ControlTemplate x:Key="SelectAllButtonTemplate" TargetType="{x:Type Button}">
<Grid>
<Rectangle x:Name="Border"
Fill="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"
SnapsToDevicePixels="True" />
<Polygon x:Name="Arrow"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Margin="8,8,3,3"
Opacity="0.15"
Fill="Black"
Stretch="Uniform"
Points="0,10 10,10 10,0" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Stroke" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" />
<Setter TargetName="Border" Property="Fill" Value="Red" />
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter TargetName="Border" Property="Fill" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" />
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Arrow" Property="Visibility" Value="Collapsed" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="DataGridStyle1" TargetType="{x:Type Custom: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" />
<!-- This is needed to force DG to have a non-default value. Otherwise the DGR.DetailsVisibility cannot have a value of VisibleWhenSelected by default. -->
<Setter Property="RowDetailsVisibilityMode" Value="VisibleWhenSelected" />
<Setter Property="ScrollViewer.CanContentScroll"
Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Custom:DataGrid}">
<Border Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
SnapsToDevicePixels="True"
Padding="{TemplateBinding Padding}">
<ScrollViewer Focusable="false"
Name="DG_ScrollViewer">
<ScrollViewer.Template>
<ControlTemplate TargetType="{x:Type ScrollViewer}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<!--Left Column Header Corner -->
<Button Command="{x:Static Custom:DataGrid.SelectAllCommand}"
Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type Custom:DataGrid}}, Path=CellsPanelHorizontalOffset}"
Template="{StaticResource SelectAllButtonTemplate}"
Focusable="false"
Visibility="{Binding RelativeSource={RelativeSource AncestorType={x:Type Custom:DataGrid}}, Path=HeadersVisibility, Converter={x:Static Custom:DataGrid.HeadersVisibilityConverter}, ConverterParameter={x:Static Custom:DataGridHeadersVisibility.All}}" />
<!--Column Headers-->
<Custom:DataGridColumnHeadersPresenter Grid.Column="1"
Name="PART_ColumnHeadersPresenter"
Visibility="{Binding RelativeSource={RelativeSource AncestorType={x:Type Custom:DataGrid}}, Path=HeadersVisibility, Converter={x:Static Custom:DataGrid.HeadersVisibilityConverter}, ConverterParameter={x:Static Custom:DataGridHeadersVisibility.Column}}"/>
<!--DataGrid content-->
<ScrollContentPresenter x:Name="PART_ScrollContentPresenter" Grid.Row="1" Grid.ColumnSpan="2" CanContentScroll="{TemplateBinding CanContentScroll}" />
<ScrollBar Grid.Row="1" Grid.Column="2" Name="PART_VerticalScrollBar"
Orientation="Vertical"
Maximum="{TemplateBinding ScrollableHeight}"
ViewportSize="{TemplateBinding ViewportHeight}"
Value="{Binding Path=VerticalOffset, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>
<Grid Grid.Row="2" Grid.Column="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type Custom:DataGrid}}, Path=NonFrozenColumnsViewportHorizontalOffset}"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<ScrollBar Grid.Column="1"
Name="PART_HorizontalScrollBar"
Orientation="Horizontal"
Maximum="{TemplateBinding ScrollableWidth}"
ViewportSize="{TemplateBinding ViewportWidth}"
Value="{Binding Path=HorizontalOffset, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>
</Grid>
</Grid>
</ControlTemplate>
</ScrollViewer.Template>
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Window.DataContext>
<local:MyViewModel/>
</Window.DataContext>
<Grid>
<Custom:DataGrid x:Name="dataGrid1" Margin="0" ItemsSource="{Binding Data}" Style="{StaticResource DataGridStyle1}"/>
</Grid>
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