文本选框在其他元素后面

本文关键字：元素 其他 文本 | 更新日期: 2023-09-27 18:18:02

我创建了一个带有动画文本的消息栏，查看动画中的.gif。就像你可以在前景看到文本"fly’s"，并隐藏占位符。但是我需要占位符在前台。

我的第一个想法是从

改变动画的区域
doubleAnimation.To = tbInfo.ActualWidth *-1;


doubleAnimation.To = boLogo.ActualWidth;

，但结果看起来像这样:版本与其他动画区域。

我如何设置占位符在前景，使动画"飞"的背后?

我XAML-Code 

<Canvas x:Name="canMain" HorizontalAlignment="Stretch" VerticalAlignment="Center">
    <Border x:Name="boLogo" Height="40" Background="Gray" Canvas.Left="0" Canvas.Top="-20">
        <Button Content="Placeholder" Width="90" />
    </Border>
    <TextBlock x:Name="tbInfo" Visibility="Hidden" FontSize="32" FontWeight="Bold"  Padding="5" HorizontalAlignment="Stretch" VerticalAlignment="Center"></TextBlock>
</Canvas>

和显示窗口

的代码
public void ShowWindow(string str)
{
    tbInfo.Text = str;
    this.Height = 39;
    this.Width = SystemParameters.WorkArea.Width;
    this.Left = SystemParameters.PrimaryScreenWidth - this.Width;
    this.Show();
    TextMarquee(20);
}
private void TextMarquee(int duration)
{
    double height = canMain.ActualHeight - tbInfo.ActualHeight;
    tbInfo.Margin = new Thickness(0, height / 2, 0, 0);
    DoubleAnimation doubleAnimation = new DoubleAnimation();
    doubleAnimation.From = canMain.ActualWidth;
    doubleAnimation.To = tbInfo.ActualWidth * -1;
    doubleAnimation.RepeatBehavior = RepeatBehavior.Forever;
    doubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(duration));
    tbInfo.BeginAnimation(Canvas.LeftProperty, doubleAnimation);
    tbInfo.Visibility = Visibility.Visible;
}

文本选框在其他元素后面

使用面板。ZIndex: 

<Canvas x:Name="canMain" >
<Border x:Name="boLogo" Panel.ZIndex="2">
    <Button Content="Placeholder" Width="90" />
</Border>
<TextBlock x:Name="tbInfo" Panel.ZIndex="1"></TextBlock>
</Canvas>
https://msdn.microsoft.com/de-de/library/system.windows.controls.panel.zindex%28v=vs.110%29.aspx

尝试网格。ZIndex: 

<Grid x:Name="canMain" >
    <Border x:Name="boLogo" Grid.ZIndex="2">
        <Button Content="Placeholder" />
    </Border>
    <TextBlock x:Name="tbInfo" Grid.ZIndex="1"/>
</Grid>

ZIndex = "2"为最可见层

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