Wpf动画背景颜色

Question

我需要帮助才能做出正确的决定.当某些事件发生时,我需要为我的用户控件的背景颜色设置动画.如果是,我想改变背景只需1秒然后再将其转回.我该走哪条路？使用颜色动画或计时器或可以通过其他方式.

解决了.谢谢大家!这对我有好处:

        ColorAnimation animation;
        animation = new ColorAnimation();
        animation.From = Colors.Orange;
        animation.To = Colors.Gray;
        animation.Duration = new Duration(TimeSpan.FromSeconds(1));
        this.elGrid.Background.BeginAnimation(SolidColorBrush.ColorProperty, animation);

Answer 1

我会用EventTrigger一个ColorAnimation.

在此示例中Button Brackground,MouseLeave事件变为绿色.希望此代码与您可能需要的代码类似.

<Button Content="Button" Height="75" HorizontalAlignment="Left" Margin="27,12,0,0" Name="btnImgBrush" VerticalAlignment="Top" Width="160" Background="LightGray">
    <Button.Triggers>
        <EventTrigger RoutedEvent="Button.MouseLeave">
            <BeginStoryboard>
                <Storyboard>
                    <ColorAnimation To="Green" 
                                    Storyboard.TargetProperty="(Button.Background).(SolidColorBrush.Color)" 
                                    FillBehavior="Stop" 
                                    Duration="0:0:1"/>
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>
    </Button.Triggers>
</Button>

Answer 2

注意,如果您的背景是冻结的实例,则可能会收到System.InvalidOperationException.

无法为'System.Windows.Media.SolidColorBrush'上的'Color'属性设置动画,因为该对象已被密封或冻结.

要更正此消息,请将控件的背景分配给非冻结实例.

// Do not use a frozen instance
this.elGrid.Background = new SolidColorBrush(Colors.Orange);
this.elGrid.Background.BeginAnimation(SolidColorBrush.ColorProperty, animation);

MSDN上的Freezable对象概述

Answer 3

        ColorAnimation colorChangeAnimation = new ColorAnimation();
        colorChangeAnimation.From = VariableColour;
         colorChangeAnimation.To = BaseColour;
        colorChangeAnimation.Duration = timeSpan;

        PropertyPath colorTargetPath = new PropertyPath("(Panel.Background).(SolidColorBrush.Color)");
        Storyboard CellBackgroundChangeStory = new Storyboard();
        Storyboard.SetTarget(colorChangeAnimation, BackGroundCellGrid);
        Storyboard.SetTargetProperty(colorChangeAnimation, colorTargetPath);
        CellBackgroundChangeStory.Children.Add(colorChangeAnimation);
        CellBackgroundChangeStory.Begin();

// VariableColour&BaseColour是Color类,timeSpan是TimeSpan类,BackGroundCellGrid是Grid类;

//无需在XAML中创建SolidColorBrush并绑定到它; //玩得开心!