绑定到 ListView 中项目的颜色属性不起作用

Question

我有这个代码。 ListView 中的每个项目都包含 Label 和 CheckBox 元素。 Label 代表绑定的Lineseries item 的标题，Checkbox 绑定到LineSeries item 的IsVisible 属性。

我希望当 LineSeries 元素可见时，触发器会将（Checkbox ControlTemplate 中 Border 元素的）背景属性设置为 LineSeries 元素的颜色。设置为 LightGray 颜色有效，更改 IsVisible 属性也有效，但 Border 的背景不会改变。

  <ListView Name="MyListView"  HorizontalAlignment="Left" Height="253" Margin="445,10,0,0" VerticalAlignment="Top" Width="72" ItemsSource="{Binding Path=Model.Series}">
        <ListView.ItemTemplate>
            <DataTemplate>
                <Grid Margin="2" Background="{Binding Color}">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="20"/>
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="auto" />
                    </Grid.RowDefinitions>
                    <CheckBox Grid.Row="0" Grid.Column="0" HorizontalAlignment="Center" VerticalAlignment="Center"  IsChecked="{Binding IsVisible, Mode=TwoWay}">
                        <CheckBox.Style>
                            <Style TargetType="{x:Type CheckBox}">
                                <Setter Property="Cursor" Value="Hand"/>
                                <Setter Property="Template">
                                    <Setter.Value>
                                        <ControlTemplate TargetType="{x:Type CheckBox}">
                                            <Border Width="15" Height="15" BorderBrush="Gray" BorderThickness="2" CornerRadius="3" />
                                            <ControlTemplate.Triggers>
                                                <Trigger Property="IsChecked" Value="True">
                                                    <Setter Property="Background" Value="{Binding Color, Converter={StaticResource OxycolorToColorConverter}}"/>
                                                </Trigger>
                                            </ControlTemplate.Triggers>
                                        </ControlTemplate>
                                    </Setter.Value>
                                </Setter>
                            </Style>
                        </CheckBox.Style>
                    </CheckBox>
                    <Label Grid.Row="0" Grid.Column="1" Content="{Binding Title}" Padding="1" />

                </Grid>
            </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>

转换器：

[ValueConversion(typeof(OxyColor), typeof(Brush))]
class OxycolorToColor: IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var ox = (OxyColor) value;
        var color = Color.FromArgb(ox.A, ox.R, ox.G, ox.B);
        var brush = new SolidColorBrush(color);
        return brush;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return OxyColors.Purple;
    }
}

Answer 1

您定义了一个 ControlTemplate 但在其中您没有使用背景属性因此它从未显示。

<ControlTemplate TargetType="{x:Type CheckBox}">
    <Border Width="15" 
            Height="15" 
            BorderBrush="Gray" 
            BorderThickness="2" 
            CornerRadius="3"
            Background="{TemplateBinding Background}"/>
    <ControlTemplate.Triggers>
        <Trigger Property="IsChecked" Value="True">
            <Setter Property="Background" Value="{Binding Color, Converter={StaticResource OxycolorToColorConverter}}"/>
        </Trigger>
    </ControlTemplate.Triggers>
</ControlTemplate>

绑定到 ListView 中项目的颜色属性不起作用

Binding to Color property of Item in ListView doesn't work

c#

wpf

xaml

binding

绑定到 ListView 中项目的颜色 属性 不起作用

Binding to Color property of Item in ListView doesn't work

c#

wpf

xaml

binding

绑定到 ListView 中项目的颜色属性不起作用