WPF Datagrid 行颜色基于值

Question

我想根据 bool 值更改 DataGrid 的行颜色。我看过 https://stackoverflow.com/questions/18580612/wpf-datagrid-trigger-row-colour-based-on-value并以类似的方式尝试它(在本地定义样式而不是在用户控件的资源中定义它)，但是当 editable 属性更改时，行背景不会更改。我不知道出了什么问题，很乐意尝试一些新事物。

<DataGrid ItemsSource="{Binding ReportSampleExaminationList}" CanUserDeleteRows="False" PreviewKeyDown="deleteRow" AutoGenerateColumns="False" HorizontalAlignment="Stretch" 
            RowBackground="Wheat" AlternatingRowBackground="WhiteSmoke" VerticalGridLinesBrush="Transparent"  HorizontalGridLinesBrush="Gray">

    <DataGrid.CellStyle >
        <Style TargetType="DataGridCell">
            <Style.Triggers>
                <Trigger Property="IsSelected"
                    Value="True">
                    <Setter Property="Background"
                    Value="LightBlue" />
                    <Setter Property="Foreground"
                    Value="Black" />
                </Trigger>
            </Style.Triggers>
        </Style>
    </DataGrid.CellStyle>
    <DataGrid.RowStyle>
        <Style TargetType="DataGridRow">
            <Style.Triggers>
                <DataTrigger Binding="{Binding Editable}" Value="False">
                    <Setter Property="Background" Value="Red" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </DataGrid.RowStyle>

    <DataGrid.Columns>
        <DataGridCheckBoxColumn Header="Editable" Binding="{Binding Editable}"/>
        <DataGridTextColumn Header="Probe" Binding="{Binding SampleNumber}" IsReadOnly="True" />
    </DataGrid.Columns>

</DataGrid>

Answer 1

如果您从 DataGrid 中取出 RowBackground 和 AlternatingRowBackground，它就可以工作。如果您想使用它们，您必须将它们放入 DataGrid 的样式中。

<DataGrid ItemsSource="{Binding ReportSampleExaminationList}" CanUserDeleteRows="False" PreviewKeyDown="deleteRow" AutoGenerateColumns="False" HorizontalAlignment="Stretch" 
            VerticalGridLinesBrush="Transparent"  HorizontalGridLinesBrush="Gray">
            <DataGrid.Style>
                <Style TargetType="DataGrid">
                    <Setter Property="RowBackground" Value="Wheat" />
                    <Setter Property="AlternatingRowBackground" Value="WhiteSmoke" />
                </Style>
            </DataGrid.Style>
            <DataGrid.CellStyle >
                <Style TargetType="DataGridCell">
                    <Style.Triggers>
                        <Trigger Property="IsSelected" Value="True">
                            <Setter Property="Background" Value="LightBlue" />
                            <Setter Property="Foreground" Value="Black" />
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </DataGrid.CellStyle>
            <DataGrid.RowStyle>
                <Style TargetType="DataGridRow">
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding Editable}" Value="False">
                            <Setter Property="Background" Value="Red" />
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </DataGrid.RowStyle>

            <DataGrid.Columns>
                <DataGridCheckBoxColumn Header="Editable" Binding="{Binding Editable,UpdateSourceTrigger=PropertyChanged}"/>
                <DataGridTextColumn Header="Probe" Binding="{Binding SampleNumber}" IsReadOnly="True" />
            </DataGrid.Columns>
</DataGrid>