The DataGrid control provides a flexible way to display a collection of data in rows and columns. The DataGrid includes built-in column types and a template column for hosting custom content. The built-in row type includes a drop-down details section that you can use to display additional content below the cell values.

Here is a simple style for WPF DataGrid that I want to share with all.

Style features
  1. Rounded Border
  2. Gradient DataGridColumnHeader with MouseOver effect
  3. Custom ValidationErrorTemplate
  4. DataGridRow MouseOver effect
  5. DataGridCell IsSelected effect
1.png
  1. <!--DataGrid -->  
  2. <!--Style and template for the resize control on the DataGridColumnHeader.-->  
  3. <Style x:Key="ColumnHeaderGripperStyle" TargetType="{x:Type Thumb}">  
  4.     <Setter Property="Width"Value="5"/>  
  5.     <Setter Property="Background"Value="Transparent"/>  
  6.     <Setter Property="Cursor"Value="SizeWE"/>  
  7.     <Setter Property="Template">  
  8.         <Setter.Value>  
  9.             <ControlTemplate TargetType="{x:Type Thumb}">  
  10.                 <Border Background="{TemplateBinding Background}"Padding="{TemplateBinding Padding}"/>  
  11.             </ControlTemplate>  
  12.         </Setter.Value>  
  13.     </Setter>  
  14. </Style>  
  15. <!--Style and template for the DataGridColumnHeader.-->  
  16. <Style TargetType="{x:Type DataGridColumnHeader}">  
  17.     <Setter Property="Background"Value="{DynamicResource NormalBorderBrush}"/>  
  18.     <Setter Property="Foreground"Value="{DynamicResource TextBrush}"/>  
  19.     <Setter Property="VerticalContentAlignment"Value="Center"/>  
  20.     <Setter Property="Height"Value="30"/>  
  21.     <Setter Property="SeparatorBrush"Value="#FFC9CACA"/>  
  22.     <Setter Property="FontSize"Value="14"/>  
  23.     <Setter Property="FontWeight"Value="SemiBold"/>  
  24.     <Setter Property="Padding"Value="4 0 0 0"/>  
  25.     <Setter Property="Template">  
  26.         <Setter.Value>  
  27.             <ControlTemplate TargetType="{x:Type DataGridColumnHeader}">  
  28.                 <ControlTemplate.Resources>  
  29.                     <Storyboard x:Key="HoverOn">  
  30.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="Hover"Storyboard.TargetProperty="(UIElement.Opacity)">  
  31.                             <SplineDoubleKeyFrame KeyTime="00:00:00.2000000"Value="1"/>  
  32.                         </DoubleAnimationUsingKeyFrames>  
  33.                     </Storyboard>  
  34.                     <Storyboard x:Key="HoverOff">  
  35.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="Hover"Storyboard.TargetProperty="(UIElement.Opacity)">  
  36.                             <SplineDoubleKeyFrame KeyTime="00:00:00.3000000"Value="0"/>  
  37.                         </DoubleAnimationUsingKeyFrames>  
  38.                     </Storyboard>  
  39.                 </ControlTemplate.Resources>  
  40.                 <Grid Background='Transparent'>  
  41.                     <Grid.ColumnDefinitions>  
  42.                         <ColumnDefinition Width='Auto'/>  
  43.                         <ColumnDefinition Width='Auto'/>  
  44.                         <ColumnDefinition Width='*'/>  
  45.                         <ColumnDefinition Width='Auto'/>  
  46.                     </Grid.ColumnDefinitions>  
  47.                     <Rectangle x:Name="BackgroundRectangle"Grid.ColumnSpan="4"Grid.RowSpan="2"  
  48.     Fill="{StaticResource NormalBrush}"Stretch="Fill"Stroke="{StaticResource NormalBorderBrush}"StrokeThickness="1"/>  
  49.                     <Rectangle x:Name="Hover"Grid.ColumnSpan="4"Grid.RowSpan="2"Stretch="Fill"  
  50.     Fill="{StaticResource MouseOverBrush}"Opacity="0"/>  
  51.                     <ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"  
  52.     VerticalAlignment="{TemplateBinding VerticalContentAlignment}"  
  53.     HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"  
  54.     Margin='{TemplateBinding Padding}'  
  55.     Cursor="{TemplateBinding Cursor}"/>  
  56.                     <Path HorizontalAlignment="Left"x:Name="SortArrow"VerticalAlignment="Center"  
  57.     Width="8"Opacity="0"RenderTransformOrigin=".5,.5"Grid.Column="2"Grid.RowSpan="2"Fill="#FF000000"Stretch="Uniform"Data="F1 M -5.215,6.099L 5.215,6.099L 0,0L -5.215,6.099 Z ">  
  58.                         <Path.RenderTransform>  
  59.                             <TransformGroup>  
  60.                                 <ScaleTransform ScaleX=".9"ScaleY=".9"x:Name="SortIconTransform"/>  
  61.                             </TransformGroup>  
  62.                         </Path.RenderTransform>  
  63.                     </Path>  
  64.                     <Thumb x:Name="PART_LeftHeaderGripper"Grid.Column="0"HorizontalAlignment="Left"Style="{StaticResource ColumnHeaderGripperStyle}"/>  
  65.                     <Thumb x:Name="PART_RightHeaderGripper"Grid.Column="3"HorizontalAlignment="Right"Style="{StaticResource ColumnHeaderGripperStyle}"/>  
  66.                 </Grid>  
  67.                 <ControlTemplate.Triggers>  
  68.                     <Trigger Property="SortDirection"Value="Ascending">  
  69.                         <Setter TargetName="SortArrow"Property="Opacity"Value="1"/>  
  70.                         <Setter TargetName="SortArrow"Property="RenderTransform">  
  71.                             <Setter.Value>  
  72.                                 <RotateTransform Angle="180"/>  
  73.                             </Setter.Value>  
  74.                         </Setter>  
  75.                         <Setter TargetName="BackgroundRectangle"Property="Opacity"Value="1"/>  
  76.                     </Trigger>  
  77.                     <Trigger Property="SortDirection"Value="Descending">  
  78.                         <Setter TargetName="SortArrow"Property="Opacity"Value="1"/>  
  79.                         <Setter TargetName="BackgroundRectangle"Property="Opacity"Value="1"/>  
  80.                     </Trigger>  
  81.                     <Trigger Property="IsMouseOver"Value="true">  
  82.                         <Trigger.EnterActions>  
  83.                             <BeginStoryboard Storyboard="{StaticResource HoverOn}"/>  
  84.                         </Trigger.EnterActions>  
  85.                         <Trigger.ExitActions>  
  86.                             <BeginStoryboard Storyboard="{StaticResource HoverOff}"/>  
  87.                         </Trigger.ExitActions>  
  88.                     </Trigger>  
  89.                 </ControlTemplate.Triggers>  
  90.             </ControlTemplate>  
  91.         </Setter.Value>  
  92.     </Setter>  
  93. </Style>  
  94. <!--Style and template for the DataGridColumnHeadersPresenter.-->  
  95. <Style TargetType="{x:Type DataGridColumnHeadersPresenter}">  
  96.     <Setter Property="Template">  
  97.         <Setter.Value>  
  98.             <ControlTemplate TargetType="{x:Type DataGridColumnHeadersPresenter}">  
  99.                 <Grid>  
  100.                     <DataGridColumnHeader x:Name="PART_FillerColumnHeader"IsHitTestVisible="False"/>  
  101.                     <ItemsPresenter />  
  102.                 </Grid>  
  103.             </ControlTemplate>  
  104.         </Setter.Value>  
  105.     </Setter>  
  106. </Style>  
  107. <Style x:Key="{ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly={x:Type DataGrid}}" TargetType="{x:Type Button}">  
  108.     <Setter Property="Template">  
  109.         <Setter.Value>  
  110.             <ControlTemplate TargetType="{x:Type Button}">  
  111.                 <Grid>  
  112.                     <Rectangle x:Name="Border"Fill="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"SnapsToDevicePixels="True"/>  
  113.                     <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"/>  
  114.                 </Grid>  
  115.                 <ControlTemplate.Triggers>  
  116.                     <Trigger Property="IsMouseOver"Value="True">  
  117.                         <Setter Property="Stroke"TargetName="Border"Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>  
  118.                     </Trigger>  
  119.                     <Trigger Property="IsPressed"Value="True">  
  120.                         <Setter Property="Fill"TargetName="Border"Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>  
  121.                     </Trigger>  
  122.                     <Trigger Property="IsEnabled"Value="False">  
  123.                         <Setter Property="Visibility"TargetName="Arrow"Value="Collapsed"/>  
  124.                     </Trigger>  
  125.                 </ControlTemplate.Triggers>  
  126.             </ControlTemplate>  
  127.         </Setter.Value>  
  128.     </Setter>  
  129. </Style>  
  130. <Style TargetType="{x:Type DataGrid}">  
  131.     <Setter Property="Background"Value="{StaticResource ControlContentBrush}"/>  
  132.     <Setter Property="RowDetailsVisibilityMode"Value="VisibleWhenSelected"/>  
  133.     <Setter Property="ScrollViewer.CanContentScroll"Value="true"/>  
  134.     <Setter Property="ScrollViewer.PanningMode"Value="Both"/>  
  135.     <Setter Property="Stylus.IsFlicksEnabled"Value="False"/>  
  136.     <Setter Property="Margin"Value="5"/>  
  137.     <Setter Property="BorderBrush"Value="{StaticResource NormalBorderBrush}"/>  
  138.     <Setter Property="AlternatingRowBackground"Value="{StaticResource AlternateBackgroundBrush}"/>  
  139.     <Setter Property="HorizontalGridLinesBrush"Value="{StaticResource NormalBorderBrush}"/>  
  140.     <Setter Property="VerticalGridLinesBrush"Value="{StaticResource NormalBorderBrush}"/>  
  141.     <Setter Property="Template">  
  142.         <Setter.Value>  
  143.             <ControlTemplate TargetType="{x:Type DataGrid}">  
  144.                 <Border BorderBrush="{TemplateBinding BorderBrush}"BorderThickness="2"CornerRadius="5"Background="{TemplateBinding Background}"Padding="{TemplateBinding Padding}"SnapsToDevicePixels="True">  
  145.                     <ScrollViewer x:Name="DG_ScrollViewer"Focusable="false">  
  146.                         <ScrollViewer.Template>  
  147.                             <ControlTemplate TargetType="{x:Type ScrollViewer}">  
  148.                                 <Grid>  
  149.                                     <Grid.ColumnDefinitions>  
  150.                                         <ColumnDefinition Width="Auto"/>  
  151.                                         <ColumnDefinition Width="*"/>  
  152.                                         <ColumnDefinition Width="Auto"/>  
  153.                                     </Grid.ColumnDefinitions>  
  154.                                     <Grid.RowDefinitions>  
  155.                                         <RowDefinition Height="Auto"/>  
  156.                                         <RowDefinition Height="*"/>  
  157.                                         <RowDefinition Height="Auto"/>  
  158.                                     </Grid.RowDefinitions>  
  159.                                     <Button 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}}}"/>  
  160.                                     <DataGridColumnHeadersPresenter 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}}}"/>  
  161.                                     <ScrollContentPresenter x:Name="PART_ScrollContentPresenter"CanContentScroll="{TemplateBinding CanContentScroll}"Grid.ColumnSpan="2"Grid.Row="1"/>  
  162.                                     <ScrollBar x:Name="PART_VerticalScrollBar"Grid.Column="2"Maximum="{TemplateBinding ScrollableHeight}"Orientation="Vertical"Grid.Row="1"Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"Value="{Binding VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}"ViewportSize="{TemplateBinding ViewportHeight}"/>  
  163.                                     <Grid Grid.Column="1"Grid.Row="2">  
  164.                                         <Grid.ColumnDefinitions>  
  165.                                             <ColumnDefinition Width="{Binding NonFrozenColumnsViewportHorizontalOffset, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>  
  166.                                             <ColumnDefinition Width="*"/>  
  167.                                         </Grid.ColumnDefinitions>  
  168.                                         <ScrollBar x:Name="PART_HorizontalScrollBar"Grid.Column="1"Maximum="{TemplateBinding ScrollableWidth}"Orientation="Horizontal"Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"Value="{Binding HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}"ViewportSize="{TemplateBinding ViewportWidth}"/>  
  169.                                     </Grid>  
  170.                                 </Grid>  
  171.                             </ControlTemplate>  
  172.                         </ScrollViewer.Template>  
  173.                         <ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>  
  174.                     </ScrollViewer>  
  175.                 </Border>  
  176.             </ControlTemplate>  
  177.         </Setter.Value>  
  178.     </Setter>  
  179.     <Style.Triggers>  
  180.         <Trigger Property="IsGrouping"Value="true">  
  181.             <Setter Property="ScrollViewer.CanContentScroll"Value="false"/>  
  182.         </Trigger>  
  183.     </Style.Triggers>  
  184. </Style>  
  185. <Style TargetType="{x:Type DataGridRow}">  
  186.     <Setter Property="SnapsToDevicePixels"Value="true"/>  
  187.     <Setter Property="Validation.ErrorTemplate"Value="{x:Null}"/>  
  188.     <Setter Property="ValidationErrorTemplate">  
  189.         <Setter.Value>  
  190.             <ControlTemplate>  
  191.                 <Grid>  
  192.                     <Ellipse Width="12"Height="12"Margin="0 2 0 0"  
  193.     Fill="Red"Stroke="Black"VerticalAlignment="Top"  
  194.     StrokeThickness="0.5"/>  
  195.                     <TextBlock FontWeight="Bold"Padding="4,0,0,0"  
  196.     VerticalAlignment="Top"Foreground="White"Text="!"  
  197.     ToolTip="{Binding (Validation.Errors)[0].ErrorContent, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}}}"/>  
  198.                 </Grid>  
  199.             </ControlTemplate>  
  200.         </Setter.Value>  
  201.     </Setter>  
  202.     <Setter Property="Template">  
  203.         <Setter.Value>  
  204.             <ControlTemplate TargetType="{x:Type DataGridRow}">  
  205.                 <ControlTemplate.Resources>  
  206.                     <Storyboard x:Key="SelectedOn">  
  207.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="select_gradient"Storyboard.TargetProperty="(UIElement.Opacity)">  
  208.                             <SplineDoubleKeyFrame KeyTime="00:00:00.1000000"Value="1"/>  
  209.                         </DoubleAnimationUsingKeyFrames>  
  210.                     </Storyboard>  
  211.                     <Storyboard x:Key="SelectedOff">  
  212.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="select_gradient"Storyboard.TargetProperty="(UIElement.Opacity)">  
  213.                             <SplineDoubleKeyFrame KeyTime="00:00:00.3000000"Value="0"/>  
  214.                         </DoubleAnimationUsingKeyFrames>  
  215.                     </Storyboard>  
  216.                     <Storyboard x:Key="HoverOn">  
  217.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="hover_gradient"Storyboard.TargetProperty="(UIElement.Opacity)">  
  218.                             <SplineDoubleKeyFrame KeyTime="00:00:00.1000000"Value="0.85"/>  
  219.                         </DoubleAnimationUsingKeyFrames>  
  220.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="highlight"Storyboard.TargetProperty="(UIElement.Opacity)">  
  221.                             <SplineDoubleKeyFrame KeyTime="00:00:00.1000000"Value="0.65"/>  
  222.                         </DoubleAnimationUsingKeyFrames>  
  223.                     </Storyboard>  
  224.                     <Storyboard x:Key="HoverOff">  
  225.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="hover_gradient"Storyboard.TargetProperty="(UIElement.Opacity)">  
  226.                             <SplineDoubleKeyFrame KeyTime="00:00:00.3000000"Value="0"/>  
  227.                         </DoubleAnimationUsingKeyFrames>  
  228.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="highlight"Storyboard.TargetProperty="(UIElement.Opacity)">  
  229.                             <SplineDoubleKeyFrame KeyTime="00:00:00.3000000"Value="0"/>  
  230.                         </DoubleAnimationUsingKeyFrames>  
  231.                     </Storyboard>  
  232.                 </ControlTemplate.Resources>  
  233.                 <Border x:Name="DGR_Border"BorderBrush="{TemplateBinding BorderBrush}"BorderThickness="{TemplateBinding BorderThickness}"Background="{TemplateBinding Background}"SnapsToDevicePixels="True">  
  234.                     <SelectiveScrollingGrid>  
  235.                         <SelectiveScrollingGrid.ColumnDefinitions>  
  236.                             <ColumnDefinition Width="Auto"/>  
  237.                             <ColumnDefinition Width="*"/>  
  238.                         </SelectiveScrollingGrid.ColumnDefinitions>  
  239.                         <SelectiveScrollingGrid.RowDefinitions>  
  240.                             <RowDefinition Height="*"/>  
  241.                             <RowDefinition Height="Auto"/>  
  242.                         </SelectiveScrollingGrid.RowDefinitions>  
  243.                         <Rectangle x:Name="hover_gradient"Stroke="{DynamicResource FocusBrush}"StrokeThickness="1"RadiusX="1"RadiusY="1"Opacity="0"IsHitTestVisible="False"Grid.Column="1"Fill="{DynamicResource MouseOverBrush}"/>  
  244.                         <Rectangle x:Name="highlight"Margin="1"StrokeThickness="1"RadiusX="0.5"RadiusY="0.5"Opacity="0"IsHitTestVisible="False"Grid.Column="1"Stroke="{DynamicResource MouseOverHighlightBrush}"Fill="{DynamicResource MouseOverHighlightBrush}"/>  
  245.                         <Rectangle x:Name="select_gradient"Grid.Row="0"Grid.ColumnSpan="2"StrokeThickness="1"RadiusX="1"RadiusY="1"Opacity="0"IsHitTestVisible="False"Fill="{DynamicResource PressedBrush}"Stroke="{DynamicResource PressedBorderBrush}"/>  
  246.                         <DataGridCellsPresenter Grid.Column="1"ItemsPanel="{TemplateBinding ItemsPanel}"SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>  
  247.                         <DataGridDetailsPresenter Grid.Column="1"Grid.Row="1"SelectiveScrollingGrid.SelectiveScrollingOrientation="{Binding AreRowDetailsFrozen, ConverterParameter={x:Static SelectiveScrollingOrientation.Vertical}, Converter={x:Static DataGrid.RowDetailsScrollingConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"Visibility="{TemplateBinding DetailsVisibility}"/>  
  248.                         <DataGridRowHeader Grid.RowSpan="2"SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.Row}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>  
  249.                     </SelectiveScrollingGrid>  
  250.                 </Border>  
  251.                 <ControlTemplate.Triggers>  
  252.                     <Trigger Property="IsMouseOver"Value="True"SourceName="DGR_Border">  
  253.                         <Trigger.ExitActions>  
  254.                             <BeginStoryboard Storyboard="{StaticResource HoverOff}"x:Name="HoverOff_BeginStoryboard"/>  
  255.                         </Trigger.ExitActions>  
  256.                         <Trigger.EnterActions>  
  257.                             <BeginStoryboard Storyboard="{StaticResource HoverOn}"x:Name="HoverOn_BeginStoryboard"/>  
  258.                         </Trigger.EnterActions>  
  259.                     </Trigger>  
  260.                     <Trigger Property="IsSelected"Value="true">  
  261.                         <Trigger.ExitActions>  
  262.                             <BeginStoryboard x:Name="SelectedOff_BeginStoryboard"Storyboard="{StaticResource SelectedOff}"/>  
  263.                         </Trigger.ExitActions>  
  264.                         <Trigger.EnterActions>  
  265.                             <BeginStoryboard Storyboard="{StaticResource SelectedOn}"/>  
  266.                         </Trigger.EnterActions>  
  267.                     </Trigger>  
  268.                 </ControlTemplate.Triggers>  
  269.             </ControlTemplate>  
  270.         </Setter.Value>  
  271.     </Setter>  
  272. </Style>  
  273. <Style TargetType="{x:Type DataGridCell}">  
  274.     <Setter Property="Template">  
  275.         <Setter.Value>  
  276.             <ControlTemplate TargetType="{x:Type DataGridCell}">  
  277.                 <ControlTemplate.Resources>  
  278.                     <Storyboard x:Key="SelectedOn">  
  279.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="select_gradient"Storyboard.TargetProperty="(UIElement.Opacity)">  
  280.                             <SplineDoubleKeyFrame KeyTime="00:00:00.1000000"Value="1"/>  
  281.                         </DoubleAnimationUsingKeyFrames>  
  282.                     </Storyboard>  
  283.                     <Storyboard x:Key="SelectedOff">  
  284.                         <DoubleAnimationUsingKeyFrames BeginTime="00:00:00"Storyboard.TargetName="select_gradient"Storyboard.TargetProperty="(UIElement.Opacity)">  
  285.                             <SplineDoubleKeyFrame KeyTime="00:00:00.3000000"Value="0"/>  
  286.                         </DoubleAnimationUsingKeyFrames>  
  287.                     </Storyboard>  
  288.                 </ControlTemplate.Resources>  
  289.                 <Border BorderBrush="{TemplateBinding BorderBrush}"BorderThickness="{TemplateBinding BorderThickness}"Background="{TemplateBinding Background}"SnapsToDevicePixels="True">  
  290.                     <Grid>  
  291.                         <Rectangle x:Name="select_gradient"Margin="-2 -1 -2 -1"Grid.Column="1"StrokeThickness="1"RadiusX="1"RadiusY="1"Opacity="0"IsHitTestVisible="False"Fill="{DynamicResource PressedBrush}"Stroke="{DynamicResource PressedBorderBrush}"/>  
  292.                         <ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>  
  293.                     </Grid>  
  294.                 </Border>  
  295.                 <ControlTemplate.Triggers>  
  296.                     <Trigger Property="IsSelected"Value="true">  
  297.                         <Trigger.ExitActions>  
  298.                             <BeginStoryboard x:Name="SelectedOff_BeginStoryboard"Storyboard="{StaticResource SelectedOff}"/>  
  299.                         </Trigger.ExitActions>  
  300.                         <Trigger.EnterActions>  
  301.                             <BeginStoryboard Storyboard="{StaticResource SelectedOn}"/>  
  302.                         </Trigger.EnterActions>  
  303.                     </Trigger>  
  304.                 </ControlTemplate.Triggers>  
  305.             </ControlTemplate>  
  306.         </Setter.Value>  
  307.     </Setter>  
  308. </Style>  
  309. <BooleanToVisibilityConverter x:Key="bool2VisibilityConverter" />  
  310. <Style x:Key="RowHeaderGripperStyle" TargetType="{x:Type Thumb}">  
  311.     <Setter Property="Height"Value="8"/>  
  312.     <Setter Property="Background"Value="Transparent"/>  
  313.     <Setter Property="Cursor"Value="SizeNS"/>  
  314.     <Setter Property="Template">  
  315.         <Setter.Value>  
  316.             <ControlTemplate TargetType="{x:Type Thumb}">  
  317.                 <Border Background="{TemplateBinding Background}"Padding="{TemplateBinding Padding}"/>  
  318.             </ControlTemplate>  
  319.         </Setter.Value>  
  320.     </Setter>  
  321. </Style>  
  322. <Style TargetType="{x:Type DataGridRowHeader}">  
  323.     <Setter Property="Width"Value="20"/>  
  324.     <Setter Property="Template">  
  325.         <Setter.Value>  
  326.             <ControlTemplate TargetType="{x:Type DataGridRowHeader}">  
  327.                 <Grid>  
  328.                     <Microsoft_Windows_Themes:DataGridHeaderBorder BorderBrush="{TemplateBinding BorderBrush}"BorderThickness="{TemplateBinding BorderThickness}"Background="{TemplateBinding Background}"IsPressed="{TemplateBinding IsPressed}"IsHovered="{TemplateBinding IsMouseOver}"IsSelected="{TemplateBinding IsRowSelected}"Orientation="Horizontal"Padding="{TemplateBinding Padding}"SeparatorBrush="{TemplateBinding SeparatorBrush}"SeparatorVisibility="{TemplateBinding SeparatorVisibility}">  
  329.                         <StackPanel Orientation="Horizontal">  
  330.                             <ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"VerticalAlignment="Center"/>  
  331.                             <Control SnapsToDevicePixels="false"Template="{Binding ValidationErrorTemplate, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}"Visibility="{Binding (Validation.HasError), Converter={StaticResource bool2VisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}"/>  
  332.                         </StackPanel>  
  333.                     </Microsoft_Windows_Themes:DataGridHeaderBorder>  
  334.                     <Thumb x:Name="PART_TopHeaderGripper"Style="{StaticResource RowHeaderGripperStyle}"VerticalAlignment="Top"/>  
  335.                     <Thumb x:Name="PART_BottomHeaderGripper"Style="{StaticResource RowHeaderGripperStyle}"VerticalAlignment="Bottom"/>  
  336.                 </Grid>  
  337.             </ControlTemplate>  
  338.         </Setter.Value>  
  339.     </Setter>  
  340. </Style>