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Align text using ContentControl using the HorizontalContentAlignment property

I am trying to apply "text alignment" to a ContentControl. Since ContentControl does not have the horizontal or vertical alignment property, such as TextBlock, I am trying to use the ContentControl HorizontalContentAlignment property.

My problem is that I cannot get it to work with ContentControl itself.

In my example, I have a content control that displays "hello world" and a button that displays "change it."

When I click the button, I set the HorizontalContentAlignment in the content control and on the button. The content of the button changes, but the content management content does not work.

Here is my XAML code:

<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition />
    </Grid.RowDefinitions>
    <ContentControl x:Name="ctrl" Width="525">
        Hello World!
    </ContentControl>
    <Button x:Name="btn" Grid.Row="1" Content="Change It" Click="btn_Click"/>
</Grid>
</Window>

VB.NET :

Class MainWindow 

  Private Sub btn_Click(sender As System.Object, e As System.Windows.RoutedEventArgs)
    If (ctrl.HorizontalContentAlignment = HorizontalAlignment.Left) Then
        ctrl.HorizontalContentAlignment = HorizontalAlignment.Right
        btn.HorizontalContentAlignment = Windows.HorizontalAlignment.Right
    Else
        ctrl.HorizontalContentAlignment = HorizontalAlignment.Left
        btn.HorizontalContentAlignment = Windows.HorizontalAlignment.Left
    End If
    ctrl.UpdateLayout()
  End Sub

End Class

, .

EDIT:

, , HorizontalContentAlignment .

Label ( ContentControl), HorizontalContentAlignment .

( : , , HorizontalContentAlignment .)

XAML:

<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <ControlTemplate x:Key="AlignmentAwareControl" TargetType="ContentControl">
            <ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/>
    </ControlTemplate>
</Window.Resources>
<Grid>
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition />
        <RowDefinition />
        <RowDefinition />
    </Grid.RowDefinitions>
    <ContentControl x:Name="ctrlTxt" Grid.Row="0"
                    Template="{StaticResource AlignmentAwareControl}" 
                    HorizontalContentAlignment="Center" Padding="0">Hello World Content Control!</ContentControl>
    <Label x:Name="ctrl" Grid.Row="1"  HorizontalContentAlignment="Center" Padding="0">Hello World Label!</Label>
    <ContentControl x:Name="ctrlImg" Grid.Row="2" 
                    Template="{StaticResource AlignmentAwareControl}"
                    HorizontalContentAlignment="Center">
        <Image Source="C:\Users\Frinavale\Pictures\Business_Woman.jpg"/>
    </ContentControl>

    <Button x:Name="btn" Grid.Row="3" Content="Change It" Click="btn_Click"/>
</Grid>
</Window>

VB.NET:

Class MainWindow 

  Private Sub btn_Click(sender As System.Object, e As System.Windows.RoutedEventArgs)
    If (ctrl.HorizontalContentAlignment = HorizontalAlignment.Left) Then
        ctrlImg.SetValue(ContentControl.HorizontalContentAlignmentProperty, Windows.HorizontalAlignment.Right)
        ctrlTxt.SetValue(ContentControl.HorizontalContentAlignmentProperty, Windows.HorizontalAlignment.Right)
        ctrl.SetValue(ContentControl.HorizontalContentAlignmentProperty, Windows.HorizontalAlignment.Right)
        btn.HorizontalContentAlignment = Windows.HorizontalAlignment.Right
    Else
        ctrlImg.SetValue(ContentControl.HorizontalContentAlignmentProperty, Windows.HorizontalAlignment.Left)
        ctrlTxt.SetValue(ContentControl.HorizontalContentAlignmentProperty, Windows.HorizontalAlignment.Left)
        ctrl.SetValue(ContentControl.HorizontalContentAlignmentProperty, Windows.HorizontalAlignment.Left)
        btn.HorizontalContentAlignment = Windows.HorizontalAlignment.Left
    End If
    ctrl.UpdateLayout()
  End Sub
End Class

,

-Frinny

+5
1

ContentControl Blend , .

<ControlTemplate TargetType="{x:Type ContentControl}">
    <ContentPresenter/>
</ControlTemplate>

HorizontalContentAlignment, Control. .

<ControlTemplate TargetType="{x:Type Label}">
    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
        <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
    </Border>
    <ControlTemplate.Triggers>
        <Trigger Property="IsEnabled" Value="false">
            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
        </Trigger>
    </ControlTemplate.Triggers>
</ControlTemplate>

, Label HorizontalContentAlignment. WPF , , ControlTemplate . , WPF HorizontalContentAlignment, ContentControl , , , - , , ...

<ContentControl x:Name="ctrl" Width="525">
    <ContentControl.Template>
        <ControlTemplate TargetType="ContentControl">
            <Grid>
                <ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                  HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/>
            </Grid>
        </ControlTemplate>
    </ContentControl.Template>
    Hello World!
</ContentControl>
+7

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