Control.Background Control.Background Control.Background Control.Background Property

定义

获取或设置一个用于描述控件背景的画笔。Gets or sets a brush that describes the background of a control.

public:
 property System::Windows::Media::Brush ^ Background { System::Windows::Media::Brush ^ get(); void set(System::Windows::Media::Brush ^ value); };
[System.ComponentModel.Bindable(true)]
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

用于填充控件背景的画笔。The brush that is used to fill the background of the control. 默认值为 TransparentThe default is Transparent.

示例

下面的示例演示如何设置控件的背景属性。The following example shows how to set the background property of a control.

<Button Name="btn" Background="Red" 
        Click="ChangeBackground">
  Background
</Button>
void ChangeBackground(object sender, RoutedEventArgs e)
{
    if (btn.Background == Brushes.Red)
    {
        btn.Background = new LinearGradientBrush(Colors.LightBlue, Colors.SlateBlue, 90);
        btn.Content = "Control background changes from red to a blue gradient.";
    }
    else
    {
        btn.Background = Brushes.Red;
        btn.Content = "Background";
    }
}
Private Sub ChangeBackground(ByVal Sender As Object, ByVal e As RoutedEventArgs)

    If (Equals(btn.Background, Brushes.Red)) Then

        btn.Background = New LinearGradientBrush(Colors.LightBlue, Colors.SlateBlue, 90)
        btn.Content = "Control background changes from red to a blue gradient."

    Else

        btn.Background = Brushes.Red
        btn.Content = "Background"

    End If
End Sub

下面的示例演示一个模板, 该模板启用触发器以便在按下按钮时更改按钮的背景。The following example shows a template that enables a trigger to change the background of a button when it is pressed.

<Button FontSize="16" FontWeight="Bold">Click the Background
  <Button.Template>
    <ControlTemplate TargetType="{x:Type Button}">
      <Border Background="{TemplateBinding Background}">
         <ContentPresenter/>
      </Border>
    </ControlTemplate>
  </Button.Template>

  <Button.Style>
    <Style TargetType="{x:Type Button}">
      <Setter Property="Background" Value="Blue"/>
      <Style.Triggers>
        <Trigger Property="IsPressed" Value="true">
          <Setter Property="Background" Value="Red"/>
        </Trigger>
      </Style.Triggers>
    </Style>
  </Button.Style>
</Button>

注解

Background属性仅适用于控件的静止状态。The Background property applies only to the resting state of a control. 控件的状态发生更改时, 控件的默认样式指定其外观。The default style of the control specifies its appearance when the state of the control changes. 例如, 如果在Background Button上设置属性, 则只有未按下或禁用此按钮时, 该按钮才具有该值。For example, if you set the Background property on a Button, the button has that value only when it is not pressed or disabled. 若要创建具有更高级的背景自定义的控件, 必须定义该控件的样式。If you want to create a control that has a more advanced customization of the background, you must define the control's style.

此属性仅影响其模板使用Background属性作为参数的控件。This property only affects a control whose template uses the Background property as a parameter. 在其他控件上, 此属性不会有任何影响。On other controls, this property has no impact.

依赖项属性信息Dependency Property Information

标识符字段Identifier field BackgroundProperty
元数据属性设置为trueMetadata properties set to true AffectsRenderSubPropertiesDoNotAffectRenderAffectsRender, SubPropertiesDoNotAffectRender

适用于