如何使用Setter属性在WPF中绘制下划线 [英] How to draw underline in wpf using Setter property

问题描述

我编写了一个触发器，如下所示:-

Hi,

I have written one trigger as below:-

<Trigger Property="IsLastActivated" Value="true">
                            <Trigger.ExitActions>
                                <BeginStoryboard Storyboard="{StaticResource LastActivatedOff}" x:Name="LastActivatedOff_BeginStoryboard" />
                            </Trigger.ExitActions>
                            <Trigger.EnterActions>
                                <BeginStoryboard Storyboard="{StaticResource LastActivatedOn}" x:Name="LastActivatedOn_BeginStoryboard" />
                            </Trigger.EnterActions>
                            <Setter Property="FontStyle" Value="Italic"/>

</Trigger>

现在，我想在触发动作发生时也画下划线.但是我不能使用下面的属性做同样的事情

now I want to draw underline as well when trigger action happen. But i am not able to do the same using below property

<Setter Property="TextBlock.TextDecorations" value="Underline">

如果您有任何想法，请告诉我.此触发器也将应用于TextBlock.

Kindly let me know if you have any idea. Also this trigger will be applied on TextBlock.

推荐答案

您好...只要记住将触发器放入样式中即可.只能在控件中直接定义EventTriggers.这应该可以工作:

Hi... just remember to put your trigger inside an style. Only EventTriggers can be defined directly in the control. This should work:

<textblock height="23">
            HorizontalAlignment="Left"
            Margin="154,102,0,0"
            Name="textBlock1"
            Text="TextBlock"
            VerticalAlignment="Top">
  <textblock.style>
    <style targettype="TextBlock">
      <style.triggers>
        <trigger property="IsMouseOver">
                  Value="true">
            <setter property="TextBlock.TextDecorations">
                    Value="Underline"/>
        </setter></trigger>
      </style.triggers>
    </style>
  </textblock.style>
</textblock>

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