根据UserControl的TabControl中的TabItem可见性触发TabItem调整大小

如何解决根据UserControl的TabControl中的TabItem可见性触发TabItem调整大小

我有一个带有TabControl的UserControl，该控件的样式为TabItems。 “项目”选项卡具有与其关联的可见性属性。我想根据对标签项目的可见性更改来调整标签宽度。该触发器适用于静态值，但不适用于MultiBinding。

Control.Xaml

<UserControl x:Class="MyControl"
             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" 
             x:Name="UserControl" 
    <UserControl.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary 
            <local:TabSizeConverter x:Key="SpanningTabHeaderSizeConverter"/>
        </ResourceDictionary>
    </UserControl.Resources>

    <TabControl x:Name="_tabControl" ItemsSource="{Binding ElementName=UserControl,Path=XYZ }" Style="{StaticResource TabControlStyle}" >
      <TabControl.ItemContainerStyle>
         <Style targettype="TabItem">
            <Setter Property="Header" Value="{Binding Path=Name}"/>
            <Setter Property="FontSize" Value="17"/>
            <Setter Property="Visibility" Value="{Binding Path=Visible,Converter={StaticResource BooleanToVisibilityConverter}}"/>
            <Setter Property="Width">
               <Setter.Value>
                  <MultiBinding Converter="{StaticResource SpanningTabHeaderSizeConverter}">
                      <Binding RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type TabControl}}" />
                      <Binding RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type TabControl}}" Path="ActualWidth" />
                  </MultiBinding>
              </Setter.Value>
            </Setter>
            </Style>
       </TabControl>
</UserControl>

Control.Xaml.cs

public class MyControl : UserControl
{      
 public MyControl()
 {
    InitializeComponent();
 }
 //Property want to use in case MultiBinding does not work to trigger manual updateTarget on tabitems
  public bool TabItemFlag
  {
     get { return (bool)this.GetValue(TabItemFlagProperty); }
     set { this.SetValue(TabItemFlagProperty,value); }
  }
  public static readonly DependencyProperty TabItemFlagProperty = DependencyProperty.Registerattached(
            "TabItemFlag",typeof(bool),typeof(MyControl),new PropertyMetadata(false));
}
  
public class TabSizeConverter : IMultiValueConverter
{
  public object Convert(object[] values,Type targettype,object parameter,CultureInfo culture)
  {
     //logic for width
  }

这适用于静态值：

<Style targettype="TabItem">
            <Setter Property="Header" Value="{Binding Path=Name}"/>
            <Setter Property="FontSize" Value="17"/>
            <Setter Property="Visibility" Value="{Binding Path=Visible,AncestorType={x:Type TabControl}}" Path="ActualWidth" />
                  </MultiBinding>
              </Setter.Value>
            </Setter>
            **<Style.Triggers>
              <Trigger Property="Visibility" Value="Collapsed">
                <Setter Property="Width" Value="110.00" />
              </Trigger>
            </Style.Triggers>**
            </Style>

我希望这样的工作：

<Style targettype="TabItem">
            <Setter Property="Header" Value="{Binding Path=Name}"/>
            <Setter Property="FontSize" Value="17"/>
            <Setter Property="Visibility" Value="{Binding Path=Visible,AncestorType={x:Type TabControl}}" Path="ActualWidth" />
                  </MultiBinding>
              </Setter.Value>
            </Setter>
            <Style.Triggers>
              <Trigger Property="Visibility" Value="Collapsed">
                <Setter Property="Width">
               <Setter.Value>
                  <MultiBinding Converter="{StaticResource SpanningTabHeaderSizeConverter}">
                      <Binding RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type TabControl}}" Path="ActualWidth" />
                  </MultiBinding>
              </Setter.Value>
            </Setter>
              </Trigger>
            </Style.Triggers>
            </Style>

还考虑过在Control中有一个依赖对象，该对象可以在触发器中更新，但UserControl在Style的TargetName中无法识别。

非常感谢您的帮助。