如何使一个文本框可见=隐藏了扳机

问题描述

我今天似乎被不好受。所有我想要做的就是让一个文本框隐藏可见基于一个布尔值，数据绑定到Window其主办的

我刚刚将无法编译什么，我不明白为什么。请大家帮帮忙。

 ＆LT; TextBlock的Grid.Column =2文本=此订单将被发送到占审批表
           前景=红VerticalAlignment =中心粗细=大胆填充=5＆GT;
    ＆LT; TextBlock.Style＆GT;
        ＆LT;样式和GT;
            ＆LT; Style.Triggers＆GT;
                ＆LT; D​​ataTrigger绑定={绑定路径= AllowedToSubmit}值=真＆GT;
                    ＆LT; setter属性=能见度VALUE =隐藏/＆GT;
                ＆LT; / DataTrigger＆GT;
            ＆LT; /Style.Triggers>
        ＆LT; /样式和GT;
    ＆LT; /TextBlock.Style>
＆LT; / TextBlock的＆GT;
 

解决方案

您需要设置<$c$c>Style.TargetType为了使其识别能见度属性：

 ＆LT; TextBlock的Grid.Column =2VerticalAlignment =中心粗细=大胆前景=红色填充=5文本=此订单将被发送以占批准＆GT;
    ＆LT; TextBlock.Style＆GT;
        ＆LT;风格的TargetType ={X：类型的TextBlock}＆GT;
            ＆LT; Style.Triggers＆GT;
                ＆LT; D​​ataTrigger绑定={绑定路径= AllowedToSubmit}值=真＆GT;
                    ＆LT; setter属性=能见度VALUE =隐藏/＆GT;
                ＆LT; / DataTrigger＆GT;
            ＆LT; /Style.Triggers>
        ＆LT; /样式和GT;
    ＆LT; /TextBlock.Style>
＆LT; / TextBlock的＆GT;
 

您结合路径 AllowedToSubmit 可能需要有的ElementName 设置为窗口的名字，也是如此。

I seem to be having a hard time today. All I want to do is make a TextBox hidden of visible based on a bool value databound to the Window its hosted in.

What I have just won't compile and I don't understand why. Please help.

<TextBlock Grid.Column="2" Text="This order will be sent to accounting for approval"
           Foreground="Red" VerticalAlignment="Center" FontWeight="Bold" Padding="5">
    <TextBlock.Style>
        <Style>
            <Style.Triggers>
                <DataTrigger Binding="{Binding Path=AllowedToSubmit}" Value="True">
                    <Setter Property="Visibility" Value="Hidden" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </TextBlock.Style>
</TextBlock>

解决方案

You need to set the Style.TargetType in order for it to recognize the Visibility property:

<TextBlock Grid.Column="2" VerticalAlignment="Center" FontWeight="Bold" Foreground="Red" Padding="5" Text="This order will be sent to accounting for approval">
    <TextBlock.Style>
        <Style TargetType="{x:Type TextBlock}">
            <Style.Triggers>
                <DataTrigger Binding="{Binding Path=AllowedToSubmit}" Value="True">
                    <Setter Property="Visibility" Value="Hidden"/>
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </TextBlock.Style>
</TextBlock>

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