WPF RibbonButton:LargeImageSource 和 Label 未通过 DataTriggers 更新 [英] WPF RibbonButton: LargeImageSource and Label not updated via DataTriggers

问题描述

我对 RibbonButton 行为中的一个奇特现象感到困惑.

I'm puzzled by a peculiar phenomenon in RibbonButton's behavior.

当我在 XAML 中静态设置 LargeImageSource 和 Label 时，一切正常:

Everything works fine when I set the LargeImageSource and the Label statically in XAML:

<ribbon:RibbonButton x:Name="ButtonArchive"
                     LargeImageSource="..\Assets\archive_insert.png"
                     Label="{Binding Path=ItemArchiveButton, 
                     Source={StaticResource Strings}}"/>

但是当我尝试通过 DataTriggers 修改这些属性时 - 似乎什么也没发生.触发器确实有效；我可以看到其他属性 - 如 Command 或 IsEnabled - 在同一个触发器中设置为 OK.也只有这些了...

But when I try to modify these properties via DataTriggers - nothing seems to be happening. The triggers do work; I can see the other properties - like Command or IsEnabled - set OK in the same trigger. It's just these too...

这是 XAML:

<ribbon:RibbonButton x:Name="ButtonArchive"
    LargeImageSource="..\Assets\archive_insert.png"
    Label="{Binding Path=ItemArchiveButton, Source={StaticResource Strings}}">
    <ribbon:RibbonButton.Style>
        <Style>
            <Style.Triggers>
                <DataTrigger Binding ="{Binding ElementName=ItemsList, Path=SelectedItem.IsArchived}" Value="false">
                    <Setter Property="ribbon:RibbonButton.Command" Value="{Binding ArchiveItemCommand}" />
                    <Setter Property="ribbon:RibbonButton.LargeImageSource" Value="..\Assets\archive_insert.png" />
                    <Setter Property="ribbon:RibbonButton.Label" Value="{Binding Path=ItemArchiveButton, Source={StaticResource Strings}}" />
                </DataTrigger>
                <DataTrigger Binding ="{Binding ElementName=ItemsList, Path=SelectedItem.IsArchived}" Value="true">
                    <Setter Property="ribbon:RibbonButton.Command" Value="{Binding RestoreItemCommand}" />
                    <Setter Property="ribbon:RibbonButton.LargeImageSource" Value="..\Assets\archive_extract.png" />
                    <Setter Property="ribbon:RibbonButton.Label" Value="{Binding Path=ItemRestoreButton, Source={StaticResource Strings}}" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </ribbon:RibbonButton.Style>
</ribbon:RibbonButton>

设置命令在这两种情况下都可以正常工作，但其他 2 个属性则不行...

Setting the Command works fine in the both conditions, but not the other 2 properties...

欢迎提出任何建议.

推荐答案

我在 MSDN 论坛上问过同样的问题，我得到的答案确实解决了这个问题.

I asked the same question at the MSDN forum, and the answer I've got really solved this.

问题在于您在按钮本身中为 LargeImageSource 和 Label 设置的属性.当你这样做时，它优先于你的风格触发器.我建议在样式中使用 setter 来设置默认值，并删除按钮的属性设置.

The problem is your setting properties for LargeImageSource and Label in the button itself. When you do this it takes precidence over your style triggers. I suggest using setters in the style to set your defaults, and remove the property settings it the button.

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