XAML WPF倒计时文本情节提要

icomxhvb  于 2022-12-07  发布在  其他
关注(0)|答案(1)|浏览(117)

有没有可能有一个按钮样式的故事板,将显示一个文本倒计时作为按钮内容?即按钮最初显示的内容=“OK(20)"。然后自动倒计时开始,将内容更改为“OK(19)",“OK(18)",...,“OK(0)",而在ViewModel中没有任何代码?

vuv7lop3

vuv7lop31#

使用VM中的属性,您可以更容易和正确地执行此操作。
在不改变虚拟机的情况下,你可以动画文本,但需要考虑如何处理事件时,故事板将完成。

<Button Name="myAnimatedButton" Margin="200"
      FontSize="16pt" FontFamily="Verdana">Some Text
      <Button.Triggers>
        <EventTrigger RoutedEvent="Button.Click">
          <BeginStoryboard>
            <Storyboard>
              <StringAnimationUsingKeyFrames 
                Storyboard.TargetName="myAnimatedButton" Storyboard.TargetProperty="(Button.Content)"
                Duration="0:0:20" FillBehavior="HoldEnd">
               
                <DiscreteStringKeyFrame Value="OK (20)" KeyTime="0:0:0" />
                <DiscreteStringKeyFrame Value="OK (19)" KeyTime="0:0:1" />
                <DiscreteStringKeyFrame Value="OK (18)" KeyTime="0:0:2" />
                <DiscreteStringKeyFrame Value="OK (17)" KeyTime="0:0:3" />
                <DiscreteStringKeyFrame Value="OK (16)" KeyTime="0:0:4" />
                <DiscreteStringKeyFrame Value="OK (15)" KeyTime="0:0:5" />
                <DiscreteStringKeyFrame Value="OK (14)" KeyTime="0:0:6" />
                <DiscreteStringKeyFrame Value="OK (13)" KeyTime="0:0:7" />
                <DiscreteStringKeyFrame Value="OK (12)" KeyTime="0:0:8" />
                <DiscreteStringKeyFrame Value="OK (11)" KeyTime="0:0:9" />
                <DiscreteStringKeyFrame Value="OK (10)" KeyTime="0:0:10" />
                <DiscreteStringKeyFrame Value="OK (09)" KeyTime="0:0:11" />
                <DiscreteStringKeyFrame Value="OK (08)" KeyTime="0:0:12" />
                <DiscreteStringKeyFrame Value="OK (07)" KeyTime="0:0:13" />
                <DiscreteStringKeyFrame Value="OK (06)" KeyTime="0:0:14" />
                <DiscreteStringKeyFrame Value="OK (05)" KeyTime="0:0:15" />
                <DiscreteStringKeyFrame Value="OK (04)" KeyTime="0:0:16" />
                <DiscreteStringKeyFrame Value="OK (03)" KeyTime="0:0:17" />
                <DiscreteStringKeyFrame Value="OK (02)" KeyTime="0:0:18" />
                <DiscreteStringKeyFrame Value="OK (01)" KeyTime="0:0:19" />
                <DiscreteStringKeyFrame Value="OK (0)" KeyTime="0:0:20" />
              </StringAnimationUsingKeyFrames>              
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger> 
      </Button.Triggers>
    </Button>

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