ControlTemplate.Triggers 属性

定义

命名空间:

System.Windows.Controls

程序集:

PresentationFramework.dll

获取根据指定条件应用属性更改或执行操作的 TriggerBase 对象的集合。

public:
 property System::Windows::TriggerCollection ^ Triggers { System::Windows::TriggerCollection ^ get(); };

[System.Windows.Markup.DependsOn("VisualTree")]
[System.Windows.Markup.DependsOn("Template")]
public System.Windows.TriggerCollection Triggers { get; }

[<System.Windows.Markup.DependsOn("VisualTree")>]
[<System.Windows.Markup.DependsOn("Template")>]
member this.Triggers : System.Windows.TriggerCollection

Public ReadOnly Property Triggers As TriggerCollection

属性值

TriggerCollection

TriggerBase 对象的集合。 默认值是 null。

属性

DependsOnAttribute

示例

以下示例演示了如何使用此属性：

<Style x:Key="{x:Type ToolTip}"
       TargetType="ToolTip">
  <Setter Property="OverridesDefaultStyle"
          Value="true" />
  <Setter Property="HasDropShadow"
          Value="True" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="ToolTip">
        <Border Name="Border"
                BorderThickness="1"
                Width="{TemplateBinding Width}"
                Height="{TemplateBinding Height}">
          <Border.Background>
            <LinearGradientBrush StartPoint="0,0"
                                 EndPoint="0,1">
              <LinearGradientBrush.GradientStops>
                <GradientStopCollection>
                  <GradientStop Color="{DynamicResource ControlLightColor}"
                                Offset="0.0" />
                  <GradientStop Color="{DynamicResource ControlMediumColor}"
                                Offset="1.0" />
                </GradientStopCollection>
              </LinearGradientBrush.GradientStops>
            </LinearGradientBrush>

          </Border.Background>
          <Border.BorderBrush>
            <SolidColorBrush Color="{DynamicResource BorderMediumColor}" />
          </Border.BorderBrush>
          <ContentPresenter Margin="4"
                            HorizontalAlignment="Left"
                            VerticalAlignment="Top" />
        </Border>
        <ControlTemplate.Triggers>
          <Trigger Property="HasDropShadow"
                   Value="true">
            <Setter TargetName="Border"
                    Property="CornerRadius"
                    Value="4" />
            <Setter TargetName="Border"
                    Property="SnapsToDevicePixels"
                    Value="true" />
          </Trigger>
        </ControlTemplate.Triggers>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

上述示例使用以下资源：

有关完整示例，请参阅使用 ControlTemplates 设置样式示例。

注解

XAML 属性元素用法

<object>
  <object.Triggers>
    oneOrMoreTriggers
  </object.Triggers>
</object>

XAML 值

oneOrMoreTriggers 一个或多个 TriggerBase 对象 (通常是) Trigger 。