DataGridRow背景颜色的WPF样式触发器被AlternatingRowBackground笔刷夸大了

问题描述

我有一个WPF DataGrid，它具有AlternatingRowBackground笔刷。配置为每隔一行上色。我想在鼠标上方进行一些操作以突出显示当前行。但是，样式触发器似乎输给了AlternatingRowBackground画笔。我在鼠标悬停时得到了所需的行着色...但是仅在没有用AlternatingRowBackground笔刷绘制的行上。

I have a WPF DataGrid which has an AlternatingRowBackground brush. It's configured to color every other row. I'd like to do something on mouse over that highlights the current row. However, the Style Trigger seems to be losing out to the AlternatingRowBackground brush. I get the desired row coloration on the mouse over... but only on the rows that are not painted with the AlternatingRowBackground brush.

这是Windows中的样式。 ：

Here is the Style in Windows.Resources:

<Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Skins/MainSkin.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <Style TargetType="{x:Type DataGridRow}">
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="Red" />
                        <Setter Property="FontWeight"
                                Value="ExtraBold" />
                        <Setter Property="Height"
                                Value="20" />
                    </Trigger>
                </Style.Triggers>
            </Style>
        </ResourceDictionary>
    </Window.Resources>

这是DataGrid：

And here is the DataGrid:

    <DataGrid Margin="25,15,25,0"
              VerticalAlignment="Top"
              ItemsSource="{Binding DocumentTypeList}"
              AutoGenerateColumns="False"
              Height="500"
              AlternationCount="2"
              FrozenColumnCount="2"
              AlternatingRowBackground="{DynamicResource AlternatingRow}">
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding Abbreviation}"
                                Header="Abbreviation" />
            <DataGridTextColumn Binding="{Binding Title}"
                                Header="Title" />

            <DataGridTextColumn Binding="{Binding Fee}"
                                Header="Fee" />
            <DataGridTextColumn Binding="{Binding SpecialInstructions}"
                                Header="Special Instructions" />
        </DataGrid.Columns>
    </DataGrid>

有没有办法宣布绝对赢家？问题是等级制度之一吗？在我看来，AlternateRowBackground笔刷胜出，因为它直接与声明的最特定部分关联。

Is there a way to declare the absolute winner? Is the issue one of a hierarchy? It seems to me that the AlternatingRowBackground brush wins out because it is directly associated with the most specific part of the declaration.

更新：正确的语法，基于@Val的指导：

Update: Here is the correct syntax, based upon @Val's guidance:

<Window.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="/Skins/MainSkin.xaml" />
        </ResourceDictionary.MergedDictionaries>
        <Style TargetType="{x:Type DataGridRow}">
            <Style.Triggers>
                <Trigger Property="IsMouseOver"
                         Value="True">
                    <Setter Property="Background"
                            Value="Red" />
                    <Setter Property="FontWeight"
                            Value="ExtraBold" />
                    <Setter Property="Height"
                            Value="20" />
                </Trigger>
            </Style.Triggers>
        </Style>
        <Style TargetType="{x:Type DataGrid}">
            <Setter Property="AlternatingRowBackground" Value="{DynamicResource AlternatingRow}"/>
        </Style>
    </ResourceDictionary>
</Window.Resources>

和DataGrid（减去AlternatingRowBackground笔刷）：

And the DataGrid (minus the AlternatingRowBackground brush):

<DataGrid Margin="25,15,25,0"
              VerticalAlignment="Top"
              ItemsSource="{Binding DocumentTypeList}"
              AutoGenerateColumns="False"
              Height="500"
              AlternationCount="2"
              FrozenColumnCount="2">
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding Abbreviation}"
                                Header="Abbreviation" />
            <DataGridTextColumn Binding="{Binding Title}"
                                Header="Title" />

            <DataGridTextColumn Binding="{Binding Fee}"
                                Header="Fee" />
            <DataGridTextColumn Binding="{Binding SpecialInstructions}"
                                Header="Special Instructions" />
        </DataGrid.Columns>
    </DataGrid>

推荐答案

过去使用这种方法对我有用事情是在触发器之外使用setter，例如：

What's worked for me in the past with this kind of thing, is to use a setter outside the triggers eg:

<Style TargetType="{x:Type DataGridRow}">
    <Style.Triggers>
        <Trigger Property="IsMouseOver"
                 Value="True">
             <Setter Property="Background"
                     Value="Red" />
             <Setter Property="FontWeight"
                     Value="ExtraBold" />
             <Setter Property="Height"
                     Value="20" />
        </Trigger>
    </Style.Triggers>
    <Setter Property="AlternatingRowBackground"
            Value="{DynamicResource AlternatingRow}"/>
</Style>

然后删除 DataGrid 本身。尽管我通常使用数据触发器来执行此操作，但通常不使用动态资源绑定来执行此操作。但是仍然值得一试

And them remove the property binding on the DataGrid itself. Although I usually do this with data triggers, and not usually with dynamic resource bindings. But still might be worth a shot

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