WPF MultiDataTrigger.EnterAction 没有使用自定义属性

Question

我一直在尝试让 WPF 多数据触发器在基于此控件的自定义 ToggleButton 上触发故事板动画 http://marcangers.com/animated-switch-togglebutton-style-in-wpf/。切换按钮是常规 WPF ToggleButton 的扩展，具有 Status 的自定义属性，将显示为 Modified 或 Unmodified。我的 MultiDataTrigger 正在触发切换按钮 IsChecked 和状态是修改还是未修改。问题是，故事板根本没有触发。当我在常规触发器中使用故事板动画时，它工作得很好。这是自定义切换按钮。

CustomToggleButton.xaml

<ToggleButton x:Class="DPC9600CustomControlLibrary.CustomToggleButton"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:ControlLibrary"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
    <ToggleButton.Resources>
        <ResourceDictionary Source="Themes/Styles_CustomToggleButton.xaml"/>
    </ToggleButton.Resources>
    <ToggleButton.Style>
        <Style TargetType="{x:Type ToggleButton}" BasedOn="{StaticResource CustomToggleButton}"/>
    </ToggleButton.Style>
</ToggleButton>

CustomToggleButton.xaml.cs

public partial class CustomToggleButton : ToggleButton
{
    public static readonly DependencyProperty StatusProperty =
        DependencyProperty.Register("Status", typeof(ConfigurationValueStatus), typeof(CustomToggleButton));



    public ConfigurationValueStatus Status
    {
        get { return (ConfigurationValueStatus) GetValue(StatusProperty); }
        set { SetValue(StatusProperty, value); }
    }

    public CustomToggleButton()
    {
        InitializeComponent();
    }
}

这是我在 Styles_CustomToggleButton.xaml

中的多数据触发器

<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsChecked}" Value="True"/>
        <Condition Binding="{Binding Status,ElementName=Myself}" Value="Unmodified"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard>
            <Storyboard>
                <ColorAnimation Storyboard.TargetProperty="Background.Color" To="#FF377EC1" Duration="0:0:0.2" />
                <ColorAnimation Storyboard.TargetProperty="BorderBrush.Color" To="#FF377EC1" Duration="0:0:0.2" />
                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Ellipse.RenderTransform).(TranslateTransform.X)" Storyboard.TargetName="ellipse">
                    <SplineDoubleKeyFrame KeyTime="0" Value="0"/>
                    <SplineDoubleKeyFrame KeyTime="0:0:0.4" Value="15" KeySpline="0, 1, 0.6, 1"/>
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </BeginStoryboard>
    </MultiDataTrigger.EnterActions>
    <MultiDataTrigger.ExitActions>
        <BeginStoryboard>
            <Storyboard>
                <ColorAnimation Storyboard.TargetProperty="Background.Color" To="#FAFAFB" Duration="0:0:0.2" />
                <ColorAnimation Storyboard.TargetProperty="BorderBrush.Color" To="#EAEAEB" Duration="0:0:0.2" />
                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Ellipse.RenderTransform).(TranslateTransform.X)" Storyboard.TargetName="ellipse">
                    <SplineDoubleKeyFrame KeyTime="0" Value="15"/>
                    <SplineDoubleKeyFrame KeyTime="0:0:0.3" Value="0" KeySpline="0, 0.5, 0.5, 1"/>
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </BeginStoryboard>
    </MultiDataTrigger.ExitActions>
</MultiDataTrigger>
<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsChecked}" Value="True"/>
        <Condition Binding="{Binding Status,ElementName=Myself}" Value="Modified"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard>
            <Storyboard>
                <ColorAnimation Storyboard.TargetProperty="Background.Color" To="Goldenrod" Duration="0:0:0.2" />
                <ColorAnimation Storyboard.TargetProperty="BorderBrush.Color" To="Goldenrod" Duration="0:0:0.2" />
                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Ellipse.RenderTransform).(TranslateTransform.X)" Storyboard.TargetName="ellipse">
                    <SplineDoubleKeyFrame KeyTime="0" Value="0"/>
                    <SplineDoubleKeyFrame KeyTime="0:0:0.4" Value="15" KeySpline="0, 1, 0.6, 1"/>
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </BeginStoryboard>
    </MultiDataTrigger.EnterActions>
    <MultiDataTrigger.ExitActions>
        <BeginStoryboard>
            <Storyboard>
                <ColorAnimation Storyboard.TargetProperty="Background.Color" To="#FAFAFB" Duration="0:0:0.2" />
                <ColorAnimation Storyboard.TargetProperty="BorderBrush.Color" To="#EAEAEB" Duration="0:0:0.2" />
                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Ellipse.RenderTransform).(TranslateTransform.X)" Storyboard.TargetName="ellipse">
                    <SplineDoubleKeyFrame KeyTime="0" Value="15"/>
                    <SplineDoubleKeyFrame KeyTime="0:0:0.3" Value="0" KeySpline="0, 0.5, 0.5, 1"/>
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </BeginStoryboard>
    </MultiDataTrigger.ExitActions>
</MultiDataTrigger>

我不确定我做错了什么，使用常规触发器可以使动画正常工作。下面来看看触发器。

<Trigger Property="IsChecked" Value="true" >
    <Trigger.EnterActions>
        <BeginStoryboard>
            <Storyboard>
                <ColorAnimation Storyboard.TargetProperty="Background.Color" To="#FF377EC1" Duration="0:0:0.2" />
                <ColorAnimation Storyboard.TargetProperty="BorderBrush.Color" To="#FF377EC1" Duration="0:0:0.2" />
                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Ellipse.RenderTransform).(TranslateTransform.X)" Storyboard.TargetName="ellipse">
                    <SplineDoubleKeyFrame KeyTime="0" Value="0"/>
                    <SplineDoubleKeyFrame KeyTime="0:0:0.4" Value="15" KeySpline="0, 1, 0.6, 1"/>
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
    <Trigger.ExitActions>
        <BeginStoryboard>
            <Storyboard>
                <ColorAnimation Storyboard.TargetProperty="Background.Color" To="#FAFAFB" Duration="0:0:0.2" />
                <ColorAnimation Storyboard.TargetProperty="BorderBrush.Color" To="#EAEAEB" Duration="0:0:0.2" />
                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Ellipse.RenderTransform).(TranslateTransform.X)" Storyboard.TargetName="ellipse">
                    <SplineDoubleKeyFrame KeyTime="0" Value="15"/>
                    <SplineDoubleKeyFrame KeyTime="0:0:0.3" Value="0" KeySpline="0, 0.5, 0.5, 1"/>
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </BeginStoryboard>
    </Trigger.ExitActions>
</Trigger>

Answer 1

问题出在 <Condition Binding="{Binding Status,ElementName=Myself}" Value="Modified"/> 我所要做的就是将它切换到 <Condition Binding="{Binding Status, RelativeSource={RelativeSource=Self}}" Value="Modified"/>

此更改修复了样式触发器。

Answer 2

我在你的 XAML 中找不到 Myself 的定义。

如果它在 Style.Triggers 中（我很确定它是），我认为 Status 的绑定应该是 {Binding Status, RelativeSource={RelativeSource Self}，就像你的 IsChecked ] 捆绑。

如果我错了并且它在 ControlTemplate.Triggers 中，我会尝试 {Binding Status, RelativeSource={RelativeSource TemplatedParent} -- IsChecked 也是如此。

WPF MultiDataTrigger.EnterAction 没有使用自定义属性

WPF MultiDataTrigger.EnterAction is not working with a custom attribute

c#

wpf

multidatatrigger