BulletDecorator.Background 属性

定义

命名空间:

System.Windows.Controls.Primitives

程序集:

PresentationFramework.dll

获取或设置 BulletDecorator 控件的背景色。

public:
 property System::Windows::Media::Brush ^ Background { System::Windows::Media::Brush ^ get(); void set(System::Windows::Media::Brush ^ value); };

public System.Windows.Media.Brush Background { get; set; }

member this.Background : System.Windows.Media.Brush with get, set

Public Property Background As Brush

属性值

Brush

Bullet 的 Child 和 BulletDecorator 的背景色。 默认值为 null。

示例

以下示例演示如何在 控件上BulletDecorator设置 Background 属性。

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;

Dim myBulletDecorator = New BulletDecorator()
Dim myImage = New Image()
Dim 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
Dim 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>

注解

属性 Background 定义 Brush 用于填充 中的 BulletDecorator区域的 。 对于某些父布局元素，为 BulletDecorator 定义的区域可能会扩展到其 Bullet 和 Child 内容之外。 例如，如果 BulletDecorator 是 控件中 Grid 单元格的单个子级， Background 属性将应用于整个单元格。 发生这种情况是因为默认情况下，单元格中 Grid 的内容会向所有方向拉伸以填充单元格。 但是，如果将 的 属性设置为 VerticalAlignmentCenter ，则 Background 属性仅影响 的实际内容区域BulletDecorator。BulletDecorator 或者，可以将 括 BulletDecorator 在 元素中 Panel 。

依赖项属性信息

标识符字段	BackgroundProperty
元数据属性设置为 true	AffectsRender, SubPropertiesDoNotAffectRender

另请参阅

• 如何：创建 BulletDecorator