egtstone3d/TopPanel/TopPanelButtonV.xaml

<Grid x:Class="TopPanelButtonV"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:EgtStone3D="clr-namespace:EgtStone3D" 
      x:Name="TopPanelButtonGrid"
      Style="{StaticResource TopPanelButton_Grid}">
   <Grid.Resources>
      <EgtStone3D:SplitConverter x:Key="SplitConverter"/>
   </Grid.Resources>
   <Grid.RowDefinitions>
      <RowDefinition Height="Auto"/>
      <RowDefinition Height="1*"/>
   </Grid.RowDefinitions>
   <TextBlock Name="IndexTopList" Visibility="Collapsed"/>

   <ItemsControl ItemsSource="{Binding TopPanelListBtn}"
                 Style="{DynamicResource TopPanelButton_ItemsControl}">
      <ItemsControl.ItemsPanel>
         <ItemsPanelTemplate>
            <WrapPanel Width="{Binding ActualWidth,ElementName=TopPanelButtonGrid, Converter={StaticResource SplitConverter},ConverterParameter={x:Reference IndexTopList}}"
                       Style="{StaticResource TopPanel_WrapPanel}"/>
         </ItemsPanelTemplate>
      </ItemsControl.ItemsPanel>
      <ItemsControl.Resources>
         <DataTemplate DataType="{x:Type EgtStone3D:_Button}">
            <Button ToolTip="{Binding Name}"
                    IsEnabled="{Binding IsEnabled}"
                    Command="{Binding CmdBtn}"
                    Style="{DynamicResource SceneButton}">
               <EgtStone3D:SVGV FileSource="{Binding Img, UpdateSourceTrigger=PropertyChanged}"/>
            </Button>
         </DataTemplate>
         <DataTemplate DataType="{x:Type EgtStone3D:_ToggleButton}">
            <ToggleButton Command="{Binding CmdBtn}" 
                          IsChecked="{Binding IsChecked}" 
                          Style="{DynamicResource SceneToggleButton}">
               <EgtStone3D:SVGV FileSource="{Binding Img, UpdateSourceTrigger=PropertyChanged}"/>
            </ToggleButton>
         </DataTemplate>
      </ItemsControl.Resources>
   </ItemsControl>

   <TextBlock Grid.Row="1"
              Text="{Binding SubTitle}"
              Style="{StaticResource TopPanel_TxBl}"/>

</Grid>