ant-design-blazor/components/avatar/AvatarGroup.razor

@namespace AntDesign
@inherits AntDomComponentBase

<CascadingValue Value="this" IsFixed="@true">
    <div class="ant-avatar-group">
        <CascadingValue Value=@("shown") Name="position">
            @ChildContent
        </CascadingValue>
        @if (_overflow)
        {
            <Popover Trigger="new[] { TriggerType.Hover}"
                     Placement=MaxPopoverPlacement
                     OverlayClassName=@($"{_prefixCls}-popover")>
                <ContentTemplate>
                    <CascadingValue Value=@("hidden") Name="position">
                        @ChildContent
                    </CascadingValue>
                </ContentTemplate>
                <Unbound>
                    <Avatar RefBack="@context" Style=@MaxStyle>@($"+{_shownAvatarList.Count - MaxCount}")</Avatar>
                </Unbound>
            </Popover>
        }
    </div>
</CascadingValue>