优化更新代码，添加界面功能并整合

WPFluent/Controls/VirtualizingPanel/VirtualizingGridView.xaml

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+<!--
+    This Source Code Form is subject to the terms of the MIT License.
+    If a copy of the MIT was not distributed with this file, You can obtain one at https://opensource.org/licenses/MIT.
+    Copyright (C) Leszek Pomianowski and WPF UI Contributors.
+    All Rights Reserved.
+-->
+
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:controls="clr-namespace:WPFluent.Controls">
+
+    <Style TargetType="{x:Type controls:VirtualizingGridView}">
+        <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
+        <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled" />
+        <Setter Property="ScrollViewer.CanContentScroll" Value="true" />
+        <Setter Property="VerticalContentAlignment" Value="Center" />
+        <Setter Property="VirtualizingPanel.IsVirtualizing" Value="True" />
+        <Setter Property="VirtualizingPanel.VirtualizationMode" Value="Standard" />
+        <Setter Property="SnapsToDevicePixels" Value="True" />
+        <Setter Property="OverridesDefaultStyle" Value="True" />
+        <Setter Property="ItemsPanel">
+            <Setter.Value>
+                <ItemsPanelTemplate>
+                    <controls:VirtualizingWrapPanel
+                        IsVirtualizing="{TemplateBinding VirtualizingPanel.IsVirtualizing}"
+                        Orientation="Vertical"
+                        SpacingMode="StartAndEndOnly"
+                        StretchItems="False"
+                        VirtualizationMode="{TemplateBinding VirtualizingPanel.VirtualizationMode}" />
+                </ItemsPanelTemplate>
+            </Setter.Value>
+        </Setter>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="{x:Type controls:VirtualizingGridView}">
+                    <Grid>
+                        <controls:PassiveScrollViewer x:Name="PART_ContentHost">
+                            <ItemsPresenter />
+                        </controls:PassiveScrollViewer>
+                        <Rectangle
+                            x:Name="PART_DisabledVisual"
+                            Opacity="0"
+                            RadiusX="2"
+                            RadiusY="2"
+                            Stretch="Fill"
+                            Stroke="Transparent"
+                            StrokeThickness="0"
+                            Visibility="Collapsed">
+                            <Rectangle.Fill>
+                                <SolidColorBrush Color="{DynamicResource ControlFillColorDefault}" />
+                            </Rectangle.Fill>
+                        </Rectangle>
+                    </Grid>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsGrouping" Value="True">
+                            <Setter Property="ScrollViewer.CanContentScroll" Value="False" />
+                        </Trigger>
+                        <Trigger Property="IsEnabled" Value="False">
+                            <Setter TargetName="PART_DisabledVisual" Property="Visibility" Value="Visible" />
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+</ResourceDictionary>