GeekDesk/Control/UserControls/SystemItem/SystemItem.xaml

<UserControl x:Class="GeekDesk.Control.UserControls.SystemItem.SystemItem"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:hc="https://handyorg.github.io/handycontrol"
             xmlns:local="clr-namespace:GeekDesk.Control.UserControls.IconFont"
             mc:Ignorable="d"
             Background="#00FFFFFF"
             >
    <WrapPanel  HorizontalAlignment="Center" VerticalAlignment="Top" Background="Transparent">
        <ListBox x:Name="ItemListBox" ItemsSource="{Binding IconInfos}" BorderThickness="0"
                 VirtualizingPanel.IsVirtualizing="True"  
                 VirtualizingPanel.IsContainerVirtualizable="True"
                 >
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel Orientation="Horizontal" Background="#00FFFFFF"/>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
            <ListBox.Background>
                <SolidColorBrush Opacity="0"/>
            </ListBox.Background>
            <ListBox.ItemContainerStyle>
                <Style TargetType="ListBoxItem">
                    <Setter Property="FocusVisualStyle" Value="{x:Null}" />
                </Style>
            </ListBox.ItemContainerStyle>
            

            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Width="80" Height="80" HorizontalAlignment="Center"
                                Background="#00FFFFFF"
                                hc:Poptip.IsOpen="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}"
                                hc:Poptip.Content="{Binding Content_NoWrite, Mode=OneWay}"
                                Tag="{Binding}"
                                MouseLeftButtonDown="Icon_MouseLeftButtonDown"
                                hc:Poptip.Placement="BottomLeft"
                                hc:Poptip.HitMode="None"
                                >
                        <Image Source="{Binding BitmapImage_NoWrite, Mode=OneWay}" Width="45" Height="45"  RenderOptions.BitmapScalingMode="HighQuality" />
                        <TextBlock TextAlignment="Center" 
                                   HorizontalAlignment="Center" 
                                   VerticalAlignment="Center" 
                                   TextWrapping="Wrap"
                                   MaxHeight="40"
                                   FontSize="13"
                                   TextTrimming="WordEllipsis"
                                   Width="65" Text="{Binding Name_NoWrite, Mode=OneWay}" 
                                   />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </WrapPanel>
</UserControl>