[Solved] HeaderRowStyle not working when ApplicationTheme is set.

[Chris]

Hi,

I'm trying to restyle the GridView by altering parts of an existing Theme. Everything works fine when not setting the ApplicationTheme but defaults to the built-in Theme when setting the ApplicationTheme.

Here is my XAML:

<UserControl
    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"
    mc:Ignorable="d"
    xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows"
    xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
    xmlns:grid="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"
    xmlns:controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"
    x:Class="RadControlsSilverlightApplication.MainPage"
    d:DesignWidth="640" d:DesignHeight="480">
    <UserControl.Resources>
        <SolidColorBrush x:Key="BzGridViewRowSelectedCell" Color="#FFE1F1F9" />
        <SolidColorBrush x:Key="BzGridViewDisabledBackground" Color="#FFEEEEEE" />
        <SolidColorBrush x:Key="BzGridViewDisabledBorderBrush" Color="#FFA9A9A9" />
        <SolidColorBrush x:Key="BzGridLinesFill" Color="#FFC3C3C3" />
        <LinearGradientBrush x:Key="BzGridViewRowSelectedBackground" EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFE3F4FC" Offset="0"/>
            <GradientStop Color="#FFA6D9F4" Offset="1"/>
        </LinearGradientBrush>
        <SolidColorBrush x:Key="BzGridViewInvalidBorder" Color="#FFCE7D7D" />
        <LinearGradientBrush x:Key="BzGridViewInvalidBackground" EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFFCDCDC"/>
            <GradientStop Color="#FFFCC1C1" Offset="1"/>
        </LinearGradientBrush>
        <SolidColorBrush x:Key="BzGridViewRowIndicatorBackground" Color="White" />
        <SolidColorBrush x:Key="BzGridViewExpanderForeground" Color="#FF003399" />
        <SolidColorBrush x:Key="BzGridViewBackground" Color="#FFFFFFFF"/>
        <SolidColorBrush x:Key="BzGridViewForeground" Color="Black" />
        <SolidColorBrush x:Key="BzGridViewRowInnerBorderBackground_Alternate" Color="#FFF7F8FA" />
        <SolidColorBrush x:Key="BzGridViewHeaderRowDataCellsPresenterBackground" Color="#FFFFFFFF" />
        <SolidColorBrush x:Key="BzGridViewHeaderCellOuterBorderBrush" Color="#FF7FB7DB" />
        <LinearGradientBrush x:Key="BzGridViewHeaderCellInnerBorderBackground" EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFE5F4FD" Offset="0"/>
            <GradientStop Color="#FFA6D9F4" Offset="1"/>
            <GradientStop Color="#FFD8EFFC" Offset="0.38"/>
            <GradientStop Color="#FFBEE6FD" Offset="0.38"/>
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="BzGridViewHeaderCellBorderBrush"  EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFFFFFFF" Offset="0.5"/>
            <GradientStop Color="#FF3C7FB1" Offset="0.5"/>
            <GradientStop Color="#FFFFFFFF" Offset="0"/>
            <GradientStop Color="#FF3C7FB1" Offset="1"/>
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="BzGridViewHeaderCellInnerBorderBackground_Over"  EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFF2F9FC" Offset="0"/>
            <GradientStop Color="#FFD8ECF6" Offset="1"/>
            <GradientStop Color="#FFF2F9FC" Offset="0.38"/>
            <GradientStop Color="#FFE1F1F9" Offset="0.38"/>
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="BzGridViewHeaderCellInnerBorderBackground_Selected"  EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFC2E4F6" Offset="0"/>
            <GradientStop Color="#FF90CBEA" Offset="1"/>
            <GradientStop Color="#FFC2E4F6" Offset="0.38"/>
            <GradientStop Color="#FFABDAF3" Offset="0.38"/>
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="BzGridViewHeaderCellSortIndicator"  EndPoint="0.724,0.182" StartPoint="0.344,0.726">
            <GradientStop Color="#FF3C5E72" Offset="0"/>
            <GradientStop Color="#FF80BADA" Offset="1"/>
            <GradientStop Color="#FF70A9C6" Offset="0.429"/>
            <GradientStop Color="#FF95C6E0" Offset="0.739"/>
        </LinearGradientBrush>
        <SolidColorBrush x:Key="BzGridViewHeaderCellForeground" Color="#FF333333" />
        <SolidColorBrush x:Key="BzFrozenSplitterLine1" Color="#FFFFFFFF" />
        <SolidColorBrush x:Key="BzFrozenSplitterLine2" Color="#FF7FB7DB" />
        <SolidColorBrush x:Key="BzFrozenSplitterLine3" Color="#7F7FB7DB" />
        <SolidColorBrush x:Key="BzFrozenSplitterLine4" Color="#3E7FB7DB" />
        <SolidColorBrush x:Key="BzGridViewIndentCellBackground" Color="#FFFFFFFF" />
        <LinearGradientBrush x:Key="BzGridViewRowDetailsBackground" EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FF83ABC0" Offset="0"/>
            <GradientStop Color="#FF4D95A9" Offset="1"/>
            <GradientStop Color="#FF3F7E9D" Offset="0.15"/>
            <GradientStop Color="#FF0A5276" Offset="0.15"/>
        </LinearGradientBrush>
        <SolidColorBrush x:Key="BzGridViewRowDetailsBorderBrush" Color="#FF3C7FB1"/>
        <SolidColorBrush x:Key="BzGridViewRowDetailsForeground" Color="#FFFFFFFF"/>

        <telerik:BooleanToOpacityConverter x:Key="BzBooleanToOpacityConverter" />
        <telerik:BooleanToVisibilityConverter x:Key="BzBooleanToVisibilityConverter" />
        <grid:GridLineWidthToThicknessConverter x:Key="BzGridLineWidthToThicknessConverter" />

        <LinearGradientBrush x:Key="BzDistinctFilterFunnelFill"  EndPoint="0.703,0.697" StartPoint="0.26,0.134">
            <GradientStop Color="#FF3C5E72" Offset="0"/>
            <GradientStop Color="#FF80BADA" Offset="1"/>
            <GradientStop Color="#FF70A9C6" Offset="0.429"/>
            <GradientStop Color="#FF95C6E0" Offset="0.739"/>
        </LinearGradientBrush>

        <ControlTemplate x:Key="BzDistinctFilterControlTemplate" TargetType="grid:FilteringDropDown">
            <Grid>
                <ToggleButton x:Name="PART_DropDownButton" Width="18" Height="18">
                    <ToggleButton.Template>
                        <ControlTemplate TargetType="ToggleButton">
                            <ContentPresenter/>
                        </ControlTemplate>
                    </ToggleButton.Template>
                    <Grid Width="11" Height="12" Background="Transparent">
                        <Path
                            Stretch="Fill"
                            Fill="{StaticResource BzDistinctFilterFunnelFill}"
                            Stroke="{x:Null}"
                            Data="M0,0 L11,0 11,1 10,1 10,2 9,2 9,3 8,3 8,3.9999999 7,3.9999999 7,12 4,12 4,3.9999999 3.0000001,3.9999999 3.0000001,3 2,3 2,2 1,2 1,1 0,1 z"
                            />
                        <Path
                            Stretch="Fill"
                            Stroke="{x:Null}"
                            VerticalAlignment="Top"
                            Margin="0,1,0,0"
                            Width="5"
                            Height="3"
                            Data="M0,0 L1,0 2,0 3,0 4,0 5,0 5.9999999,0 7,0 7,0.99999996 5.9999999,0.99999996 5,0.99999996 5.9999999,1.0000001 5.9999999,2 5,2 4.981,2 4.981,3 4,3 3.9809999,3 3.9809999,4 2.9809999,4 2.9809999,3 2,3 2,2 1,2&#xa;1,1.0000001 0,1.0000001 z"
                            Fill="#FFFFFFFF"
                            Visibility="{TemplateBinding FunnelFillVisibility}"
                            />
                    </Grid>
                </ToggleButton>
                <Popup x:Name="PART_DropDownPopup"/>
            </Grid>
        </ControlTemplate>

        <Style x:Key="BzFilteringDropDownStyle" TargetType="grid:FilteringDropDown">
            <Setter Property="Template" Value="{StaticResource BzDistinctFilterControlTemplate}"/>
            <Setter Property="Foreground" Value="#FF333333" />
            <Setter Property="FontWeight" Value="Normal" />
            <Setter Property="FontStyle" Value="Normal" />
            <Setter Property="FontSize" Value="11" />
        </Style>


        <ControlTemplate x:Key="BzDetailsPresenterTemplate" TargetType="grid:DetailsPresenter">
            <Border
                x:Name="DetailsBorder"
                Visibility="Collapsed"
                Background="{TemplateBinding Background}"
                BorderBrush="{TemplateBinding BorderBrush}"
                BorderThickness="{TemplateBinding BorderThickness}"
                MinHeight="{TemplateBinding MinHeight}"
                >
                <ContentPresenter x:Name="PART_ContentPresenter" />
                <vsm:VisualStateManager.VisualStateGroups>
                    <vsm:VisualStateGroup x:Name="DetailsStates">
                        <vsm:VisualState x:Name="DetailsVisible">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="DetailsBorder" Storyboard.TargetProperty="Visibility">
                                    <DiscreteObjectKeyFrame KeyTime="00:00:00" Value="Visible"/>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                        <vsm:VisualState x:Name="DetailsCollapsed" />
                    </vsm:VisualStateGroup>
                </vsm:VisualStateManager.VisualStateGroups>
            </Border>
        </ControlTemplate>

        <Style x:Key="BzDetailsPresenterStyle" TargetType="grid:DetailsPresenter">
            <Setter Property="Template" Value="{StaticResource BzDetailsPresenterTemplate}" />
            <Setter Property="IsTabStop" Value="False" />
            <Setter Property="Background" Value="{StaticResource BzGridViewRowDetailsBackground}" />
            <Setter Property="BorderBrush" Value="{StaticResource BzGridViewRowDetailsBorderBrush}" />
            <Setter Property="BorderThickness" Value="1" />
            <Setter Property="Foreground" Value="{StaticResource BzGridViewRowDetailsForeground}" />
            <Setter Property="UseLayoutRounding" Value="True" />
        </Style>

        <Style x:Key="BzGridViewIndentCellStyle" TargetType="grid:GridViewIndentCell">
            <Setter Property="BorderBrush" Value="{StaticResource BzGridLinesFill}" />
            <Setter Property="Background" Value="{StaticResource BzGridViewIndentCellBackground}" />

            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="grid:GridViewIndentCell">
                        <Border
                            Background="{TemplateBinding Background}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            VerticalAlignment="Stretch"
                            BorderThickness="0,0,1,0"
                            Width="18"
                            />
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <ControlTemplate x:Key="BzIndentPresenterTemplate" TargetType="grid:IndentPresenter">
            <Grid>
                <ItemsPresenter/>
            </Grid>
        </ControlTemplate>

        <DataTemplate x:Key="BzIndentPresenterItemTemplate">
            <grid:GridViewIndentCell Style="{StaticResource BzGridViewIndentCellStyle}"/>
        </DataTemplate>

        <ItemsPanelTemplate x:Key="BzIndentPresenterItemsPanelTemplate">
            <StackPanel Orientation="Horizontal"/>
        </ItemsPanelTemplate>

        <Style x:Key="BzIndentPresenterStyle" TargetType="grid:IndentPresenter">
            <Setter Property="Template" Value="{StaticResource BzIndentPresenterTemplate}" />
            <Setter Property="ItemTemplate" Value="{StaticResource BzIndentPresenterItemTemplate}" />
            <Setter Property="ItemsPanel" Value="{StaticResource BzIndentPresenterItemsPanelTemplate}" />
        </Style>

        <ControlTemplate x:Key="BzFrozenColumnsSplitterTemplate" TargetType="grid:FrozenColumnsSplitter">
            <StackPanel Orientation="Horizontal" Width="6" Opacity="1">
                <Border HorizontalAlignment="Left" Width="1" Background="{StaticResource BzFrozenSplitterLine1}" />
                <Border HorizontalAlignment="Left" Width="1" Background="{StaticResource BzFrozenSplitterLine2}" />
                <Border HorizontalAlignment="Left" Width="1" Background="{StaticResource BzFrozenSplitterLine3}" />
                <Border HorizontalAlignment="Left" Width="1" Background="{StaticResource BzFrozenSplitterLine4}" />
            </StackPanel>
        </ControlTemplate>

        <Style x:Key="BzFrozenColumnsSplitterStyle" TargetType="grid:FrozenColumnsSplitter">
            <Setter Property="Template" Value="{StaticResource BzFrozenColumnsSplitterTemplate}" />
            <Setter Property="IsTabStop" Value="False" />
        </Style>

        <ControlTemplate x:Key="BzDataCellsPresenterTemplate" TargetType="grid:DataCellsPresenter">
            <Grid>
                <ItemsPresenter />
                <grid:FrozenColumnsSplitter
                    HorizontalAlignment="Left"
                    x:Name="PART_FrozenColumnsSplitter"
                    Style="{StaticResource BzFrozenColumnsSplitterStyle}"
                    />
            </Grid>
        </ControlTemplate>

        <Style x:Key="BzDataCellsPresenterStyle" TargetType="grid:DataCellsPresenter">
            <Setter Property="Template" Value="{StaticResource BzDataCellsPresenterTemplate}" />
            <Setter Property="IsTabStop" Value="False" />
            <Setter Property="ItemsPanel">
                <Setter.Value>
                    <ItemsPanelTemplate>
                        <grid:GridViewCellsPanel />
                    </ItemsPanelTemplate>
                </Setter.Value>
            </Setter>

        </Style>

        <ControlTemplate x:Key="BzGridViewHeaderIndentCellTemplate" TargetType="grid:GridViewHeaderIndentCell">
            <Border
                Width="18"
                BorderBrush="{TemplateBinding BorderBrush}"
                Background="{TemplateBinding Background}"
                BorderThickness="{TemplateBinding BorderThickness}"
                MinHeight="{TemplateBinding MinHeight}"
                Margin="{TemplateBinding Margin}"
                />
        </ControlTemplate>

        <Style x:Key="BzHeaderIndentCellStyle" TargetType="grid:GridViewHeaderIndentCell">
            <Setter Property="Template" Value="{StaticResource BzGridViewHeaderIndentCellTemplate}" />
            <Setter Property="Background" Value="{StaticResource BzGridViewHeaderCellInnerBorderBackground}" />
            <Setter Property="BorderBrush" Value="{StaticResource BzGridViewHeaderCellOuterBorderBrush}" />
            <Setter Property="BorderThickness" Value="0,0,1,0" />
            <Setter Property="Margin" Value="0" />
            <Setter Property="MinHeight" Value="18" />
        </Style>

        <DataTemplate x:Key="BzGridViewHeaderIndentCellDataTemplate">
            <grid:GridViewHeaderIndentCell Style="{StaticResource BzHeaderIndentCellStyle}"/>
        </DataTemplate>

        <ControlTemplate x:Key="BzMyGridViewHeaderRowTemplate" TargetType="grid:GridViewHeaderRow">
            <Border
                x:Name="PART_GridViewHeaderRowBorder"
                BorderBrush="{TemplateBinding BorderBrush}"
                Background="{TemplateBinding Background}"
                BorderThickness="{TemplateBinding BorderThickness}"
                MinHeight="{TemplateBinding MinHeight}"
                Margin="{TemplateBinding Margin}"
                Padding="{TemplateBinding Padding}">
                <grid:SelectiveScrollingGrid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>

                    <Border
                        x:Name="PART_IndicatorPresenter"
                        Visibility="{TemplateBinding RowIndicatorVisibility}"
                        Grid.Column="0"
                        VerticalAlignment="Stretch"
                        BorderThickness="0,0,1,0"
                        Width="18"
                        BorderBrush="{StaticResource BzGridViewHeaderCellOuterBorderBrush}"
                        MinHeight="{TemplateBinding MinHeight}"
                        />

                    <grid:IndentPresenter
                        x:Name="PART_IndentPresenter"
                        IndentLevel="{TemplateBinding IndentLevel}"
                        ItemTemplate="{StaticResource BzGridViewHeaderIndentCellDataTemplate}"
                        Grid.Column="1"
                        Style="{StaticResource BzIndentPresenterStyle}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        Background="{TemplateBinding Background}"
                        MinHeight="{TemplateBinding MinHeight}"
                        Margin="{TemplateBinding Margin}"
                        />

                    <Border
                        x:Name="PART_HierarchyIndentPresenter"
                        Grid.Column="2"
                        VerticalAlignment="Stretch"
                        BorderThickness="0,0,1,0"
                        Width="18"
                        BorderBrush="{StaticResource BzGridViewHeaderCellOuterBorderBrush}"
                        MinHeight="{TemplateBinding MinHeight}"
                        Visibility="{Binding HasHierarchy, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzBooleanToVisibilityConverter}}"
                        />

                    <grid:DataCellsPresenter
                        x:Name="PART_DataCellsPresenter"
                        Background="{StaticResource BzGridViewHeaderRowDataCellsPresenterBackground}"
                        Grid.Column="3"
                        MinHeight="{TemplateBinding MinHeight}"
                        Style="{StaticResource BzDataCellsPresenterStyle}"
                        />
                </grid:SelectiveScrollingGrid>
            </Border>
        </ControlTemplate>

        <Style x:Key="BzHeaderRowStyle" TargetType="grid:GridViewHeaderRow">
            <Setter Property="Template" Value="{StaticResource BzMyGridViewHeaderRowTemplate}" />
            <Setter Property="Background" Value="{StaticResource BzGridViewHeaderCellInnerBorderBackground}" />
            <Setter Property="BorderBrush" Value="{StaticResource BzGridViewHeaderCellBorderBrush}" />
            <Setter Property="BorderThickness" Value="0,0,0,1" />
            <Setter Property="MinHeight" Value="18" />
            <Setter Property="Margin" Value="0" />
            <Setter Property="Padding" Value="0" />
        </Style>

        <Style x:Key="BzColumnHeaderGripperStyle" TargetType="Thumb">
            <Setter Property="Width" Value="5"/>
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Cursor" Value="SizeWE"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Thumb">
                        <Border Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" />
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <ControlTemplate x:Key="BzGridViewHeaderCellTemplate" TargetType="grid:GridViewHeaderCell">
            <Grid x:Name="PART_HeaderCellGrid" MinHeight="{TemplateBinding MinHeight}">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="Auto"/>
                </Grid.ColumnDefinitions>

                <vsm:VisualStateManager.VisualStateGroups>
                    <vsm:VisualStateGroup x:Name="CommonStates">
                        <vsm:VisualState x:Name="Normal" />
                        <vsm:VisualState x:Name="MouseOver" >
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="GridViewHeaderCell_Over"
                                    Storyboard.TargetProperty="Opacity"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="1"/>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>

                    <vsm:VisualStateGroup x:Name="SortingStates">
                        <vsm:VisualState x:Name="Ascending">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="PART_SortIndicator"
                                    Storyboard.TargetProperty="Visibility"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible" />
                                </ObjectAnimationUsingKeyFrames>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="PART_SortIndicator"
                                    Storyboard.TargetProperty="RenderTransform"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <ScaleTransform ScaleX="1" ScaleY="-1" />
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="GridViewHeaderCell_Selected"
                                    Storyboard.TargetProperty="Opacity"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="1"/>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                        <vsm:VisualState x:Name="Descending">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="PART_SortIndicator"
                                    Storyboard.TargetProperty="Visibility"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible" />
                                </ObjectAnimationUsingKeyFrames>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="PART_SortIndicator"
                                    Storyboard.TargetProperty="RenderTransform"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <ScaleTransform ScaleX="1" ScaleY="1" />
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="GridViewHeaderCell_Selected"
                                    Storyboard.TargetProperty="Opacity"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="1"/>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                        <vsm:VisualState x:Name="None">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="PART_SortIndicator"
                                    Storyboard.TargetProperty="Visibility"
                                    >
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Collapsed" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>

                </vsm:VisualStateManager.VisualStateGroups>

                <Border
                    x:Name="GridViewHeaderCell"
                    Grid.ColumnSpan="2"
                    Margin="{TemplateBinding Margin}"
                    Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}"
                    />

                <Border
                    x:Name="GridViewHeaderCell_Over"
                    Grid.ColumnSpan="2"
                    Opacity="0"
                    Margin="{TemplateBinding Margin}"
                    Background="{StaticResource BzGridViewHeaderCellInnerBorderBackground_Over}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}"
                    />

                <Border
                    x:Name="GridViewHeaderCell_Selected"
                    Grid.ColumnSpan="2"
                    Opacity="0"
                    Margin="{TemplateBinding Margin}"
                    Background="{StaticResource BzGridViewHeaderCellInnerBorderBackground_Selected}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}"
                    />

                <grid:AlignmentContentPresenter
                    TextAlignment="{TemplateBinding TextAlignment}"
                    Margin="{TemplateBinding Padding}"
                    HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
                    VerticalAlignment="{TemplateBinding VerticalAlignment}"
                    />

                <Grid Grid.Column="1" HorizontalAlignment="Right">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition Width="Auto"/>
                    </Grid.ColumnDefinitions>
                    <Path
                        x:Name="PART_SortIndicator"
                        Stretch="Fill"
                        HorizontalAlignment="Right"
                        VerticalAlignment="Center"
                        Width="7"
                        Height="4"
                        Margin="1,0,2,0"
                        Data="M0,0 L1,0 2,0 3,0 4,0 5,0 5.9999999,0 7,0 7,0.99999996 5.9999999,0.99999996 5,0.99999996 5.9999999,1.0000001 5.9999999,2 5,2 4.981,2 4.981,3 4,3 3.9809999,3 3.9809999,4 2.9809999,4 2.9809999,3 2,3 2,2 1,2&#xa;1,1.0000001 0,1.0000001 z"
                        RenderTransformOrigin="0.5,0.5"
                        Fill="{StaticResource BzGridViewHeaderCellSortIndicator}"
                        Visibility="Visible"
                        >
                        <Path.RenderTransform>
                            <TransformGroup>
                                <ScaleTransform ScaleX="1" ScaleY="-1"/>
                                <SkewTransform AngleX="0" AngleY="0"/>
                                <RotateTransform Angle="0"/>
                                <TranslateTransform X="0" Y="0"/>
                            </TransformGroup>
                        </Path.RenderTransform>
                    </Path>

                    <grid:FilteringDropDown
                        Name="PART_DistinctFilterControl"
                        Grid.Column="1"
                        Visibility="{TemplateBinding FilteringUIVisibility}"
                        Style="{StaticResource BzFilteringDropDownStyle}"
                        Margin="0,0,5,0"
                        />

                </Grid>
                <Thumb x:Name="PART_LeftHeaderGripper" HorizontalAlignment="Left" Style="{StaticResource BzColumnHeaderGripperStyle}" Grid.ColumnSpan="2" />
                <Thumb x:Name="PART_RightHeaderGripper" HorizontalAlignment="Right" Style="{StaticResource BzColumnHeaderGripperStyle}" Grid.ColumnSpan="2" />
            </Grid>
        </ControlTemplate>

        <Style x:Key="BzHeaderCellStyle" TargetType="grid:GridViewHeaderCell">
            <Setter Property="Template" Value="{StaticResource BzGridViewHeaderCellTemplate}" />

            <Setter Property="Background" Value="{StaticResource BzGridViewHeaderCellInnerBorderBackground}" />
            <Setter Property="BorderBrush" Value="{StaticResource BzGridViewHeaderCellOuterBorderBrush}" />
            <Setter Property="BorderThickness" Value="0,0,1,0" />
            <Setter Property="Margin" Value="0" />
            <Setter Property="MinHeight" Value="18" />
            <Setter Property="Padding" Value="3,0,1,0" />
            <Setter Property="Foreground" Value="{StaticResource BzGridViewHeaderCellForeground}" />
            <Setter Property="FontWeight" Value="Bold" />
            <Setter Property="FontStyle" Value="Normal" />
            <Setter Property="HorizontalAlignment" Value="Stretch" />
            <Setter Property="VerticalAlignment" Value="Center" />
        </Style>

        <ControlTemplate x:Key="BzGridViewRowTemplate" TargetType="grid:GridViewRow">
            <grid:SelectiveScrollingGrid x:Name="grid">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition Height="*" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>

                <vsm:VisualStateManager.VisualStateGroups>
                    <vsm:VisualStateGroup x:Name="FocusStates">
                        <vsm:VisualState x:Name="Unfocused" />
                        <vsm:VisualState x:Name="Focused">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="NavigatorIndicator"
                                    Storyboard.TargetProperty="Visibility">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>
                    <vsm:VisualStateGroup x:Name="SelectionStates">
                        <vsm:VisualState x:Name="Unselected"/>
                    </vsm:VisualStateGroup>
                    <vsm:VisualStateGroup x:Name="CommonStates">
                        <vsm:VisualState x:Name="Normal"/>
                        <vsm:VisualState x:Name="MouseOver">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="BackgroundRectangle"
                                    Storyboard.TargetProperty="Opacity">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value=".5" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                        <vsm:VisualState x:Name="Selected">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="BackgroundRectangle"
                                    Storyboard.TargetProperty="Opacity">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="1" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>
                    <vsm:VisualStateGroup x:Name="ValueStates">
                        <vsm:VisualState x:Name="Valid"/>
                        <vsm:VisualState x:Name="Invalid">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames
                                    Storyboard.TargetName="InvalidBorder"
                                    Storyboard.TargetProperty="Opacity">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="1" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>
                </vsm:VisualStateManager.VisualStateGroups>

                <Border
                    x:Name="SelectionBackground"
                    Grid.Column="2"
                    Grid.ColumnSpan="2"
                    MinHeight="{TemplateBinding MinHeight}"
                    Background="{TemplateBinding Background}"
                    Margin="{TemplateBinding Margin}"
                    Padding="{TemplateBinding Padding}"
                    BorderThickness="0"
                    BorderBrush="{x:Null}"
                    />

                <Rectangle
                    x:Name="BackgroundRectangle"
                    Grid.Column="2"
                    Grid.ColumnSpan="2"
                    Opacity="0"
                    Fill="{StaticResource BzGridViewRowSelectedBackground}"
                    />

                <Rectangle
                    x:Name="InvalidBorder"
                    Grid.Column="2"
                    Grid.ColumnSpan="2"
                    Opacity="0"
                    StrokeThickness="0"
                    Stroke="{StaticResource BzGridViewInvalidBorder}"
                    Fill="{StaticResource BzGridViewInvalidBackground}"
                    />

                <controls:GridViewToggleButton
                    Grid.Column="2"
                    MinWidth="18"
                    MinHeight="18"
                    BorderBrush="{TemplateBinding VerticalGridLinesBrush}"
                    BorderThickness="{Binding VerticalGridLinesWidth, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzGridLineWidthToThicknessConverter}, ConverterParameter=Right}"
                    grid:SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
                    IsHitTestVisible="{Binding IsExpandable, RelativeSource={RelativeSource TemplatedParent}}"
                    Opacity="{Binding IsExpandable, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzBooleanToOpacityConverter}}"
                    Visibility="{Binding HasHierarchy, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzBooleanToVisibilityConverter}}"
                    IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
                    />

                <Border
                    Grid.Column="2"
                    BorderBrush="{TemplateBinding VerticalGridLinesBrush}"
                    BorderThickness="{Binding VerticalGridLinesWidth, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzGridLineWidthToThicknessConverter}, ConverterParameter=Right}"
                    grid:SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
                    Visibility="{Binding HasHierarchy, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzBooleanToVisibilityConverter}}"
                    />

                <grid:DataCellsPresenter
                    Grid.Column="3"
                    Style="{StaticResource BzDataCellsPresenterStyle}"
                    x:Name="PART_DataCellsPresenter"
                    />

                <grid:DetailsPresenter
                    x:Name="PART_DetailsPresenter"
                    Grid.Column="2"
                    Grid.ColumnSpan="2"
                    Grid.Row="1"
                    Visibility="Collapsed"
                    DetailsProvider="{TemplateBinding DetailsProvider}"
                    Style="{StaticResource BzDetailsPresenterStyle}"
                    />

                <ContentPresenter
                    x:Name="PART_HierarchyChildPresenter"
                    Grid.Column="2"
                    Grid.Row="2"
                    Grid.ColumnSpan="2"
                    Visibility="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzBooleanToVisibilityConverter}}"
                    />

                <Border
                    x:Name="PART_IndicatorPresenter"
                    Width="18"
                    VerticalAlignment="Stretch"
                    Grid.Column="0"
                    Visibility="{TemplateBinding RowIndicatorVisibility}"
                    grid:SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
                    Background="{StaticResource BzGridViewRowIndicatorBackground}"
                    Grid.RowSpan="3"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="0,0,1,1">

                    <Path
                        x:Name="NavigatorIndicator"
                        Fill="{StaticResource BzGridViewExpanderForeground}"
                        Stretch="Fill"
                        VerticalAlignment="Center"
                        HorizontalAlignment="Center"
                        Width="5"
                        Height="8"
                        Data="M254.5,183.75 L254.5,193.33333 260.75,188.16682 z"
                        Visibility="Collapsed"
                        />
                </Border>
                <Border
                    x:Name="PART_RowBorder"
                    BorderBrush="{TemplateBinding HorizontalGridLinesBrush}"
                    BorderThickness="{Binding HorizontalGridLinesWidth, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzGridLineWidthToThicknessConverter}, ConverterParameter=Bottom}"
                    Grid.ColumnSpan="4"
                    Grid.Column="1"
                    Grid.RowSpan="4"
                    VerticalAlignment="Bottom"
                    />

                <grid:IndentPresenter
                    x:Name="PART_IndentPresenter"
                    Style="{StaticResource BzIndentPresenterStyle}"
                    IndentLevel="{TemplateBinding IndentLevel}"
                    Grid.Column="1"
                    Background="{TemplateBinding Background}"
                    grid:SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
                    />
            </grid:SelectiveScrollingGrid>
        </ControlTemplate>

        <Style x:Key="BzGridViewRowStyle" TargetType="grid:GridViewRow">
            <Setter Property="IsTabStop" Value="False" />
            <Setter Property="Template" Value="{StaticResource BzGridViewRowTemplate}" />
            <Setter Property="Background" Value="{StaticResource BzGridViewBackground}" />
            <Setter Property="BorderBrush" Value="{StaticResource BzGridLinesFill}" />
            <Setter Property="MinHeight" Value="18" />
            <Setter Property="FontWeight" Value="Normal" />
            <Setter Property="Foreground" Value="{StaticResource BzGridViewForeground}" />
        </Style>

        <Style x:Key="BzGridViewAlternateRowStyle" BasedOn="{StaticResource BzGridViewRowStyle}" TargetType="grid:GridViewRow">
            <Setter Property="Background" Value="{StaticResource BzGridViewRowInnerBorderBackground_Alternate}" />
        </Style>

        <ControlTemplate x:Key="BzGridViewCellTemplate" TargetType="grid:GridViewCell">
            <Border
                x:Name="PART_CellBorder"
                Background="{TemplateBinding Background}"
                BorderBrush="{TemplateBinding VerticalGridLinesBrush}"
                BorderThickness="{Binding VerticalGridLinesWidth, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BzGridLineWidthToThicknessConverter}, ConverterParameter=Right}">

                <vsm:VisualStateManager.VisualStateGroups>
                    <vsm:VisualStateGroup x:Name="CommonStates">
                        <vsm:VisualState x:Name="Normal" />
                        <vsm:VisualState x:Name="Current">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PART_CellBorder" Storyboard.TargetProperty="Background">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource BzGridViewRowSelectedCell}" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>
                    <vsm:VisualStateGroup x:Name="EditingStates">
                        <vsm:VisualState x:Name="Edited">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PART_ContentPresenter" Storyboard.TargetProperty="Margin">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="0" />
                                </ObjectAnimationUsingKeyFrames>
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PART_ContentPresenter" Storyboard.TargetProperty="VerticalAlignment">
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Stretch" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                        <vsm:VisualState x:Name="Display" />
                    </vsm:VisualStateGroup>
                    <vsm:VisualStateGroup x:Name="DisabledStates">
                        <vsm:VisualState x:Name="Enabled" />
                        <vsm:VisualState x:Name="Disabled">
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PART_CellBorder" Storyboard.TargetProperty="Background">
                                    <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource BzGridViewDisabledBackground}" />
                                </ObjectAnimationUsingKeyFrames>
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PART_CellBorder" Storyboard.TargetProperty="BorderBrush">
                                    <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource BzGridViewDisabledBorderBrush}" />
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </vsm:VisualState>
                    </vsm:VisualStateGroup>
                </vsm:VisualStateManager.VisualStateGroups>


                <grid:AlignmentContentPresenter
                    x:Name="PART_ContentPresenter"
                    Margin="{TemplateBinding Padding}"
                    Visibility="Visible"
                    Content="{TemplateBinding Content}"
                    ContentTemplate="{TemplateBinding ContentTemplate}"
                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                    TextAlignment="{TemplateBinding TextAlignment}"
                    TextWrapping="{TemplateBinding TextWrapping}"
                    TextDecorations="{TemplateBinding TextDecorations}"
                    />
            </Border>
        </ControlTemplate>

        <Style x:Key="BzCellStyle" TargetType="grid:GridViewCell">
            <Setter Property="Template" Value="{StaticResource BzGridViewCellTemplate}"/>
            <Setter Property="Padding" Value="3,0,1,0"/>
            <Setter Property="BorderBrush" Value="{StaticResource BzGridLinesFill}"/>
            <Setter Property="BorderThickness" Value="0,0,1,0" />
            <Setter Property="VerticalContentAlignment" Value="Center" />
            <Setter Property="HorizontalContentAlignment" Value="Stretch" />
            <Setter Property="Background" Value="Transparent" />
            <Setter Property="FontSize" Value="10"/>
        </Style>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot">
        <controls:RadGridView x:Name="_grid" AutoGenerateColumns="False" IsReadOnly="True" RowStyle="{StaticResource BzGridViewRowStyle}" HeaderRowStyle="{StaticResource BzHeaderRowStyle}">
            <controls:RadGridView.Columns>
                <controls:GridViewDataColumn IsFilterable="False" UniqueName="Test" Header="Test" CellStyle="{StaticResource BzCellStyle}" HeaderCellStyle="{StaticResource BzHeaderCellStyle}">
                </controls:GridViewDataColumn>
            </controls:RadGridView.Columns>
        </controls:RadGridView>
    </Grid>
</UserControl>

Here is my code-behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Telerik.Windows.Controls;

namespace RadControlsSilverlightApplication
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            StyleManager.ApplicationTheme = new VistaTheme(); // When this is commented out everything works
            InitializeComponent();
            this._grid.ItemsSource = new Data[] {
                new Data() { Test = "Test 1" },
                new Data() { Test = "Test 2" },
                new Data() { Test = "Test 3" },
                new Data() { Test = "Test 4" }
            };
        }
    }

    public class Data
    {
        public string Test { get; set; }
    }
}

Thanks,
Chris

[Kalin Milanov]

Hello Chris,

I believe this is the same issue discussed in the WPF forums:
http://www.telerik.com/community/forums/wpf/gridview/groupfooterrowstyle-controltemplate.aspx

It has already been logged and we will be investigating it.

Kind regards,
Kalin Milanov
the Telerik team

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