我想在wpf窗口中闪烁标签内容，怎么做？ [英] I want blinking label content in wpf window, how to do it?

问题描述

我想向用户显示错误消息，但错误应以闪烁方式显示

我不知道如何在wpf中执行此操作。

所以请帮助我。

谢谢

sushil



我尝试了什么：



我试过TextDecoration属性，但它不在wpf中。我不知道。

解决方案

您是否考虑使用动画来控制闪烁的消息？举个例子，我只是向XAML添加了一个按钮和一个文本块。然后为按钮创建了一个点击事件。

< Grid> 
<按钮x：名称=  按钮内容=  按钮 Horizo​​ntalAlignment =  左 VerticalAlignment =   Top Width =   75 Click =   button_Click /> 
< TextBlock x：Name =   textBlock Horizo​​ntalAlignment =  左 TextWrapping =  换行 Text =  警告 VerticalAlignment =   Top Margin =   0,26,0,0\"  /> 
 
 < /  网格  >  

然后将以下内容添加到我的主窗口。

  public   partial  类 MainWindow：Window 
 {
 DoubleAnimation da =  new  DoubleAnimation（）; 
  public  MainWindow（）
 {
 InitializeComponent（）; 
 
 da.From =  30 ; 
 da.To =  35 ; 
 da.AutoReverse =  true ; 
 da.RepeatBehavior =  new  RepeatBehavior（ 3 ）; 
 da.Duration =  new 持续时间（TimeSpan.FromSeconds（ 0 。 5 ））; 
 
} 
 
  private   void  button_Click（< span class =code-keyword> object  sender，RoutedEventArgs e）
 {
 textBlock.BeginAnimation（TextBlock.FontSizeProperty，da）; 
} 
} 

这个

在资源中声明这个StoryBoard

 <   storyboard     x：key   =  FlashMe  
   
                                            < span class =code-attribute>       RepeatBehavior   = 永远 >  
 <   objectanimationusingkeyframes     storyboard.targetproperty   = （UIElement.Visibility ） >  
 <  离散objectkeyframe     keytime   =  0：0：0.5 >  
  <   discreteobjectkeyframe.value  >  
 <  可见性 > 折叠<   / visibility  >  
 <   / discreteobjectkeyframe.value  >  
 <   / discreteobjectkeyframe  >  
 <   discreteobjectkeyframe     keytime   =  0：0：1 >  
 <  < span class =code-leadattribute> discreteobjectkeyframe.value  >  
 <  可见性 > 可见<   / visibility  >  
 <   / discreteobjectkeyframe.value  >  
 <   / discreteobjectkeyframe  >  
 <   / objectanimationusingkeyframes  >  
 <   / storyboard  >  

&在你的ButtonClickEvent



写



textBox.BeginStoryboard（FindResource（FlashMe）作为故事板）;

I want to show error Message to user, but error should display in blinking manner
I don't know how to do it in wpf.
so please help me.
thank you
sushil

What I have tried:

I tried TextDecoration property but it is not in wpf may be. i dont know.

解决方案

Have you considered using a animation to control the blinking message ? For an example I have simply added a button and a textblock to XAML. Then created a click event for the button.

<Grid>
        <Button x:Name="button" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Click="button_Click"/>
        <TextBlock x:Name="textBlock" HorizontalAlignment="Left" TextWrapping="Wrap" Text="Warning" VerticalAlignment="Top" Margin="0,26,0,0"/>

    </Grid>

And then add the following to my main windows.

public partial class MainWindow : Window
    {
        DoubleAnimation da = new DoubleAnimation();
        public MainWindow()
        {
            InitializeComponent();
           
            da.From = 30;
            da.To = 35;
            da.AutoReverse = true;
            da.RepeatBehavior = new RepeatBehavior(3);
            da.Duration = new Duration(TimeSpan.FromSeconds(0.5));
            
        }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            textBlock.BeginAnimation(TextBlock.FontSizeProperty, da);
        }
    }

This

Declare This StoryBoard in Resources

<storyboard x:key="FlashMe"

                        RepeatBehavior="Forever">
                <objectanimationusingkeyframes storyboard.targetproperty="(UIElement.Visibility)">
                    <discreteobjectkeyframe keytime="0:0:0.5">
                        <discreteobjectkeyframe.value>
                            <visibility>Collapsed</visibility>
                        </discreteobjectkeyframe.value>
                    </discreteobjectkeyframe>
                    <discreteobjectkeyframe keytime="0:0:1">
                        <discreteobjectkeyframe.value>
                            <visibility>Visible</visibility>
                        </discreteobjectkeyframe.value>
                    </discreteobjectkeyframe>
                </objectanimationusingkeyframes>
            </storyboard>

& in Your ButtonClickEvent

write

textBox.BeginStoryboard(FindResource("FlashMe") as Storyboard);

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