WPF下Itemscontrol分组 样式

 ItemsControl   Grid.Row="1" DataContext="{Binding Layouts}" ItemsSource="{Binding }">
            ItemsControl.GroupStyle>
                GroupStyle >
                    GroupStyle.ContainerStyle >
                        Style TargetType="{x:Type GroupItem}" >
                            Setter Property="Margin" Value="0,0,0,10"/>
                            Setter Property="Template" >
                                Setter.Value >
                                    ControlTemplate TargetType="{x:Type GroupItem}">
                                        Border BorderBrush="Gray"  BorderThickness="1" Margin="5,6,5,1">
                                        StackPanel  >
                                            ContentPresenter />
                                            Border >
                                                 ItemsPresenter />
                                            Border>
                                        StackPanel>
                                        Border>
                                    ControlTemplate>
                                Setter.Value>
                            Setter>
                        Style>
                    GroupStyle.ContainerStyle>
                        GroupStyle.HeaderTemplate >
                        DataTemplate >
                            TextBlock Name="txtgroup"  FontSize="13" Foreground="#262679" Text="基本布局"/>
                            DataTemplate.Triggers >
                                DataTrigger Binding="{Binding Path=Name}" Value="Increase">
                                    Setter TargetName="txtgroup" Property="Text" Value="增强布局" />
                                DataTrigger>
                            DataTemplate.Triggers>
                        DataTemplate>
                    GroupStyle.HeaderTemplate>
                GroupStyle>
            ItemsControl.GroupStyle>
            ItemsControl.ItemTemplate >
                DataTemplate >
                    Button  Command="{Binding SelectedStyleCommand}" CommandParameter="{Binding Tag}" Background="{Binding Img}"
                                 Width="120" Height="80" Margin="10,10,0,10">
                            Button.Template >
                                ControlTemplate TargetType="{x:Type Button}">
                                Border Name="bd001" CornerRadius="8" Background="{TemplateBinding Background}"  BorderBrush="LightGray" BorderThickness="2">
                                        ContentPresenter Content="{TemplateBinding Content}" HorizontalAlignment="Center" VerticalAlignment="Center" />
                                    Border>
                                    ControlTemplate.Triggers >
                                        Trigger Property="IsMouseOver" Value="True">
                                            Setter Property="Opacity" Value="0.85" TargetName="bd001"/>
                                            Setter Property="BorderBrush" Value="Red" TargetName="bd001"/>
                                        Trigger>
                                    ControlTemplate.Triggers>
                                ControlTemplate>
                            Button.Template>
                        Button>
                DataTemplate>
            ItemsControl.ItemTemplate>
            ItemsControl.ItemsPanel >
                ItemsPanelTemplate >
                    UniformGrid Rows="2" Columns="4"/>
                ItemsPanelTemplate>
            ItemsControl.ItemsPanel>
            
        ItemsControl>