如何更改wpf中datagrid所选项目的背景颜色？

Question

所以这是我的数据网格，但是如果我在数据网格中选择一个项目，它的颜色不会改变。触发器不起作用。

DataGrid x:Name="dgAdatok" ColumnWidth="*" MinColumnWidth="100"  FontSize="9.5"  Background="Transparent" Grid.RowSpan="4" BorderThickness="0" Margin="0,30,0,0" >
                <DataGrid.Resources>
                    <Style TargetType="DataGridColumnHeader">
                        <Setter Property="Background" Value="Purple"/>
                        <Setter Property="Foreground" Value="White"/>
                    </Style>
                    <Style TargetType="DataGridCell">
                        <Setter Property="Background" Value="#DA34AE"/>
                        <Setter Property="Foreground" Value="Black"/>
                        <Setter Property="BorderBrush" Value="#DA34AE"/>
                    </Style>
                    <Style TargetType="DataGrid">
                        <Style.Triggers>
                            <Trigger Property="DataGridCell.IsSelected" Value="True">
                                <Setter Property="Background" Value="Blue" />
                            </Trigger>
                        </Style.Triggers>
                    </Style>
                    
                </DataGrid.Resources>
                
            </DataGrid>

Answer 1

我只需将

<Trigger Property="DataGridCell.IsSelected" Value="True"> <Setter Property="Background" Value="Blue" /> </Trigger>

移动到目标类型 datagridcell

Answer 2

<Style TargetType="DataGridCell">
       <Setter Property="Background" Value="#DA34AE"/>
       <Setter Property="Foreground" Value="Black"/>
       <Setter Property="BorderBrush" Value="#DA34AE"/>
       <!-- Add trigger for IsSelected property -->
       <Style.Triggers>
          <Trigger Property="IsSelected" Value="True">
                    <!-- Change the background color when selected -->
                    <Setter Property="Background" Value="Blue"/>
                    <Setter Property="Foreground" Value="White"/>
                </Trigger>
       </Style.Triggers>
</Style>

您正在尝试在

DataGrid

本身上设置触发器，这不是

IsSelected

属性的正确目标。您应该修改

DataGridCell

样式以包含

IsSelected

属性的触发器。