How to: Create a BulletDecorator

This example shows how the Bullet of a BulletDecorator control aligns with different types of Child objects. This example also shows different types of Bullet objects.

The following example shows how to define a BulletDecorator control that uses an image as the Bullet and a text object as the Child. When a text object contains multiple lines of text, as it does in this example, the Bullet object lines up with the first line of text.

BulletDecorator myBulletDecorator = new BulletDecorator();
Image myImage = new Image();
BitmapImage myBitmapImage = new BitmapImage();
myBitmapImage.BeginInit();
myBitmapImage.UriSource = new Uri(@"pack://application:,,/images/apple.jpg");
myBitmapImage.EndInit();
myImage.Source = myBitmapImage;
myImage.Width = 10;
myBulletDecorator.Bullet = myImage;
myBulletDecorator.Margin = new Thickness(0, 10, 0, 0);
myBulletDecorator.VerticalAlignment = VerticalAlignment.Center;
myBulletDecorator.Background = Brushes.Yellow;
TextBlock myTextBlock = new TextBlock();
myTextBlock.Text = "This BulletDecorator created by using code";
myTextBlock.TextWrapping = TextWrapping.Wrap;
myTextBlock.HorizontalAlignment = HorizontalAlignment.Left;
myTextBlock.Width = 100;
myTextBlock.Foreground = Brushes.Purple;
myBulletDecorator.Child = myTextBlock;
<BulletDecorator  Grid.Row="1" Grid.Column="0" Margin="0,5,0,0"
                  VerticalAlignment="Center" Background="Yellow">
  <BulletDecorator.Bullet>
    <Image Source="images\apple.jpg"/>
  </BulletDecorator.Bullet>
  <TextBlock
    Width="100" 
    TextWrapping="Wrap" 
    HorizontalAlignment="Left"
    Foreground ="Purple">
    A Simple BulletDecorator
  </TextBlock>
</BulletDecorator>

The following example shows how to define a BulletDecorator control that uses an image as the Bullet and a text object that has a specified font size as the Child. Because the Bullet is smaller than the letters that are specified by the font size, the Bullet object centers itself next to the text.

<BulletDecorator Margin="0,5,0,10" Grid.Column="0" Grid.Row="2"
  VerticalAlignment="Center">
  <BulletDecorator.Bullet>
    <Image Source="images\apple.jpg"/>
  </BulletDecorator.Bullet>
  <TextBlock Name="FontSizeExample"
    FontSize="12" Foreground="Green">FontSize = 12 </TextBlock>
</BulletDecorator>

The following example shows how to define a BulletDecorator control that uses an image as the Bullet and a non-text element as the Child. In this example, the Bullet object centers itself next to the non-text element.

<BulletDecorator Grid.Row="3" Grid.Column="0" Margin="0,5,0,0">
  <BulletDecorator.Bullet>
    <Image Source="images\apple.jpg"/>
  </BulletDecorator.Bullet>
  <Ellipse Height="75" Width="50" Fill="Purple" 
           HorizontalAlignment="Left" ></Ellipse>
</BulletDecorator>

The following example shows three kinds of Bullet options for a BulletDecorator control.

<BulletDecorator Margin="0,5,0,0">
  <BulletDecorator.Bullet>
    <CheckBox/>
  </BulletDecorator.Bullet>
  <TextBlock
    Width="100" 
    TextWrapping="Wrap" 
    HorizontalAlignment="Left"
    Foreground = "Blue" 
    Margin="5,0,0,0">
    A BulletDecorator with a CheckBox Bullet.
  </TextBlock>
</BulletDecorator>
  <BulletDecorator Margin="0,5,0,0">
    <BulletDecorator.Bullet>
      <TextBox Width="30"/>
    </BulletDecorator.Bullet>
    <TextBlock
      Width="100" 
      TextWrapping="Wrap" 
      HorizontalAlignment="Left"
      Foreground ="Blue" 
      Margin="5,0,0,0">
      A BulletDecorator with a TextBox Bullet.
    </TextBlock>
  </BulletDecorator>
  <BulletDecorator Margin="0,5,0,0">
  <BulletDecorator.Bullet>
    <RadioButton/>
  </BulletDecorator.Bullet>
    <TextBlock
      Width="100" 
      TextWrapping="Wrap" 
      HorizontalAlignment="Left"
      Foreground ="Blue"
      Margin="5,0,0,0">
      A BulletDecorator with a RadioButton Bullet
    </TextBlock>
  </BulletDecorator>
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