将填充添加到单元格时，DataGrid行选择不起作用 [英] DataGrid row selection not working when padding is added to cells

问题描述

DataGrid控件表现异常.当我单击一行时，应将其选中. 单击单元格边框或行边框时出现问题.它根本什么也没做.作为用户，我想单击行并选择它而不强迫我重新单击，因为我不小心单击了单元格之间的边框.

DataGrid control in WPF is behaving weird. When I click on a row it should be selected. There is a problem when I click on cell border or row border. It simply does nothing. As a user I want to click row and select it without forcing me to re-click cause I accidentally clicked on border between cells.

是否可以通过某种方式解决此问题，所以无论我在哪里单击它都会选择行?

Is it possible to somehow fix this behavior so no matter where I click it selects row?

我发现了这种样式的问题，我将该样式应用于DataGrid的CellStyle属性:

I discovered its a matter of this style I applied to DataGrid to CellStyle property:

<Style x:Key="CustomDataGridCellStyle" TargetType="DataGridCell">
    <Setter Property="Padding" Value="2" />
    <Setter Property="Margin" Value="0" />
    <Setter Property="Background" Value="White" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="DataGridCell">
                <Border x:Name="border" 
                              BorderBrush="#CCaaccda"
                              BorderThickness="1"
                              CornerRadius="0"
                              Padding="4"
                            >
                    <ContentPresenter />
                </Border>
                <ControlTemplate.Triggers>
                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="true">
                        <Setter TargetName="border" Property="Background" Value="#CC119EDA"/>
                    </DataTrigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>   
</Style>

如果我将其删除.我徘徊在风格如何与控制交互相混淆的地方.

If I remove it its working. I wander how style can mess with interactions to control.

Padding="4"

防止在单元格之间创建的空白区域无法进行命中测试.知道如何在单元格中添加未命中的阻止填充吗?

is preventing the created empty area between cells to not be able to take hit test. Any idea how to add not hittest blocking padding to cells?

解决方案很奇怪.

<Grid Background="Transparent" IsHitTestVisible="True">
    <ContentPresenter Margin="4"/>
</Grid>

边距已添加到单元格内容中，并且对单击没有反应.但是我用具有IsHitTestVisible ="True"且透明的Grid包围了它. WPF太疯狂了.

Margin is added to cell content and its not reacting to click. But I surrounded it with Grid that have IsHitTestVisible="True" and is transparent. WPF is crazy weird.

推荐答案

由于您尚未发布任何xaml，也没有发布数据网格外观的图片. 很难指出问题所在.

Since you hadn't posted any xaml, or a picture of how your datagrid looks. It's hard to pint point the problem.

但是，这可能是由点击测试失败引起的. 鼠标命中测试通过代表该元素的彩色像素矩阵来检测该元素.

However, This might be caused by a Hit Test failing. The mouse hit test detects an element by the matrix of colored pixels which represent it.

通过将背景设置为透明"，尝试为所有像素着色.透明不会影响行的外观，并且不会为点击测试着色:

Try coloring all the pixels by setting the background to Transparent. Transparent would not effect how your row looks and would color it for the Hit test :

<DataGrid>
    <DataGrid.RowStyle>
        <Style TargetType="DataGridRow">
            <Setter Property="Background" Value="Transparent" />
        </Style>
    </DataGrid.RowStyle>
</DataGrid>

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