Edytuj

Udostępnij za pośrednictwem

RelativeSource.TemplatedParent Property

  • Reference

Definition

Namespace:
System.Windows.Data
Assembly:
PresentationFramework.dll

Gets a static value that is used to return a RelativeSource constructed for the TemplatedParent mode.

public:
 static property System::Windows::Data::RelativeSource ^ TemplatedParent { System::Windows::Data::RelativeSource ^ get(); };
public static System.Windows.Data.RelativeSource TemplatedParent { get; }
static member TemplatedParent : System.Windows.Data.RelativeSource
Public Shared ReadOnly Property TemplatedParent As RelativeSource

Property Value

RelativeSource

A static RelativeSource.

Examples

The following example shows the Style definition of a custom control called NumericUpDown. The Text property of the TextBlock is bound to the Value of the object that is the TemplatedParent, which is the NumericUpDown control that this Style is applied to in this case.

<!--ControlTemplate for NumericUpDown that inherits from
    Control.-->
<Style TargetType="{x:Type local:NumericUpDown}">
  <Setter Property="HorizontalAlignment" Value="Center"/>
  <Setter Property="VerticalAlignment" Value="Center"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type local:NumericUpDown}">
        <Grid Margin="3">
          <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
          </Grid.RowDefinitions>
          <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
          </Grid.ColumnDefinitions>

          <Border BorderThickness="1" BorderBrush="Gray" 
                  Margin="2" Grid.RowSpan="2" 
                  VerticalAlignment="Center" HorizontalAlignment="Stretch">
                  
            <TextBlock Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Value}" 
                       Width="60" TextAlignment="Right" Padding="5"/>
          </Border>
          
          <RepeatButton Command="{x:Static local:NumericUpDown.IncreaseCommand}"  
                        Grid.Column="1" Grid.Row="0">Up</RepeatButton>
                        
          <RepeatButton Command="{x:Static local:NumericUpDown.DecreaseCommand}"
                        Grid.Column="1" Grid.Row="1">Down</RepeatButton>

        </Grid>

      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

Remarks

Three of the four RelativeSourceMode values, PreviousData, Self, or TemplatedParent, can produce a RelativeSource that is wholly static, containing no unique private values. All uses of the static property can share the same object, eliminating the need to allocate separate objects for each use. Therefore, using the static property reduces memory usage.

XAML Text Usage

For XAML information, see RelativeSource MarkupExtension.

Applies to

See also