DataTrigger pour DataGridColumnHeader basé sur la propriété d'en-tête DataGridTextColumn

Question

J'ai un style d'icône de filtre implémenté pour le type de cible = DataGridColumnHeader et j'ai joint le style dans DataGrid. Maintenant, l'icône de filtre doit s'afficher en fonction de la propriété d'en-tête DataGridTextColumn. Exigence est-tête = "Nom du passager" affiche alors le filtre Icône

<DataGrid Name="PassengerGrid" AutoGenerateColumns="False" ColumnHeaderStyle="{StaticResource FilterDataGridColumnHeader}"> 
    <DataGridTextColumn Binding="{Binding CustomVisitTime}" Header="Visit Time" CanUserSort="true" Width="90" ElementStyle="{StaticResource DataGridElementStyle}""/> 
    <DataGridTextColumn Binding="{Binding PassengerName}" Header="Passenger Name" CanUserSort="true" Width="90" ElementStyle="{StaticResource DataGridElementStyle}""/> 
</DataGrid> 

Le Syle pour la colonne DataGridHeader est

<Style TargetType="{x:Type DataGridColumnHeader}" x:Key="FilterDataGridColumnHeader"> 
     <Setter Property="Padding" Value="2 8"/> 
     <Setter Property="Margin" Value="0" /> 
     <Setter Property="Background" Value="Transparent"/> 
     <Setter Property="FontWeight" Value="Bold"/> 
     <Setter Property="BorderBrush" Value="{StaticResource TheranosMediumGray}"/> 
     <Setter Property="BorderThickness" Value="0 0 0 1"/> 
     <Setter Property="VerticalContentAlignment" Value="Center"/> 
     <Setter Property="Template"> 
      <Setter.Value> 
       <ControlTemplate TargetType="{x:Type DataGridColumnHeader}"> 
        <Grid> 
         <Microsoft_Windows_Themes:DataGridHeaderBorder BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" IsClickable="{TemplateBinding CanUserSort}" IsPressed="{TemplateBinding IsPressed}" IsHovered="{TemplateBinding IsMouseOver}" Padding="{TemplateBinding Padding}" SortDirection="{TemplateBinding SortDirection}" SeparatorBrush="{TemplateBinding SeparatorBrush}" SeparatorVisibility="{TemplateBinding SeparatorVisibility}"> 
          <Grid> 
           <Grid.ColumnDefinitions> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition Width="Auto"/> 
           </Grid.ColumnDefinitions> 
           <ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="0 3"/> 
           <Path Grid.Column="1" x:Name="SortArrow" HorizontalAlignment="Right" VerticalAlignment="Center" Width="8" Height="6" Margin="4,0,0,0" Stretch="Fill" Opacity="0.5" Fill="{StaticResource TheranosGray}" 
              RenderTransformOrigin="0.5,0.4" Visibility="Collapsed" Data="M0,0 L1,0 0.5,1 z" /> 
           <Button Grid.Column="2" Command="{Binding Path=DataContext.FilterPopUpCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}}" Style="{StaticResource TransButtonStyleKey}"> 
            <Button.CommandParameter> 
             <MultiBinding Converter="{StaticResource MultiValueConverterKey}"> 
              <Binding RelativeSource="{ RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGrid}}" /> 
              <Binding Path="Column" RelativeSource="{ RelativeSource Mode=TemplatedParent}" /> 
             </MultiBinding> 
            </Button.CommandParameter> 
            <ContentControl Name="autofilter" Visibility="Collapsed" ContentTemplate="{StaticResource FilterButtonStyleKey}" Margin="0 0 3 0"></ContentControl> 
           </Button> 
          </Grid> 
         </Microsoft_Windows_Themes:DataGridHeaderBorder> 
         <Thumb x:Name="PART_LeftHeaderGripper" HorizontalAlignment="Left"> 
          <Thumb.Style> 
           <Style TargetType="{x:Type Thumb}"> 
            <Setter Property="Width" Value="8"/> 
            <Setter Property="Background" Value="Transparent"/> 
            <Setter Property="Cursor" Value="SizeWE"/> 
            <Setter Property="Template"> 
             <Setter.Value> 
              <ControlTemplate TargetType="{x:Type Thumb}"> 
               <Border Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}"/> 
              </ControlTemplate> 
             </Setter.Value> 
            </Setter> 
           </Style> 
          </Thumb.Style> 
         </Thumb> 
         <Thumb x:Name="PART_RightHeaderGripper" HorizontalAlignment="Right"> 
          <Thumb.Style> 
           <Style TargetType="{x:Type Thumb}"> 
            <Setter Property="Width" Value="8"/> 
            <Setter Property="Background" Value="Transparent"/> 
            <Setter Property="Cursor" Value="SizeWE"/> 
            <Setter Property="Template"> 
             <Setter.Value> 
              <ControlTemplate TargetType="{x:Type Thumb}"> 
               <Border Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}"/> 
              </ControlTemplate> 
             </Setter.Value> 
            </Setter> 
           </Style> 
          </Thumb.Style> 
         </Thumb> 
        </Grid> 
        <ControlTemplate.Triggers> 
         <Trigger Property="SortDirection" Value="Ascending"> 
          <Setter TargetName="SortArrow" Property="Visibility" Value="Visible" /> 
          <Setter TargetName="SortArrow" Property="RenderTransform"> 
           <Setter.Value> 
            <RotateTransform Angle="180" /> 
           </Setter.Value> 
          </Setter> 
         </Trigger> 
         <Trigger Property="SortDirection" Value="Descending"> 
          <Setter TargetName="SortArrow" Property="Visibility" Value="Visible" /> 
         </Trigger> 
         <!--Auto Filter --> 
         <MultiTrigger> 
          <MultiTrigger.Conditions> 
           <Condition Property="IsMouseOver" Value="True"></Condition> 
          </MultiTrigger.Conditions> 
          <Setter TargetName="autofilter" Property="Visibility" Value="Visible"/> 
         </MultiTrigger> 
        </ControlTemplate.Triggers> 
       </ControlTemplate> 
      </Setter.Value> 
     </Setter> 
    </Style> 

Answer 1

<MultiDataTrigger> 
    <MultiDataTrigger.Conditions> 
     <Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=Column.Header}" Value="Passenger Name"/> 
     <Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="True"/> 
    </MultiDataTrigger.Conditions> 
    <Setter TargetName="autofilter" Property="Visibility" Value="Visible"/> 
</MultiDataTrigger>