Question

我有一个包含数据网格的WPF应用程序。 datagrid绑定到我的对象OrderBlock，它包含一个Orders类型的List。

<DataGrid DataContext="{Binding OrderBlock}"
              Name="dataGridOrdersGood" 
              ItemsSource="{Binding Orders}"

这很好用，在我的数据网格中很好地显示。我的列表中有一个属性（StatusGood）虽然我想显示为一个组合框，其中只有两个值，“发送”或“保持”。

如果组合框中的值是“保持”，我希望该行变成不同的颜色。理想情况下使用从银色到黄色的线性渐变。我已经尝试了下面的代码 - 实际上只是试图将行变为红色，但没有任何反应。我无法看到下面的代码有什么问题。触发器部分非常接近下面代码的底部。我是WPF的新手，目前正在努力解决这个问题。下面的代码主要来自一个非常好的帖子，可以在这里找到http://www.codeproject.com/Articles/586132/WPF-DataGrid-Custommization-using-Style-and-Templa

    <!-- Data grid formatting Grid Row template -->
    <Style x:Key="DG_Row" TargetType="{x:Type DataGridRow}">
        <Setter Property="Background" Value="LightGreen"/>
        <Setter Property="Opacity" Value="1"/>
        <Setter Property="Padding" Value="3,2,2,3"/>
        <Setter Property="Validation.ErrorTemplate" Value="{x:Null}"/>            
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type DataGridRow}">
                    <Border x:Name="DGR_Border"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}"
                            SnapsToDevicePixels="True">
                        <Border.Background>
                            <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
                                <GradientStop Offset="0" Color="Transparent"/>
                                <GradientStop Offset="1" Color="Silver"/>
                            </LinearGradientBrush>                                
                        </Border.Background>
                        <SelectiveScrollingGrid>
                            <SelectiveScrollingGrid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="*" />
                            </SelectiveScrollingGrid.ColumnDefinitions>
                            <SelectiveScrollingGrid.RowDefinitions>
                                <RowDefinition Height="20" />
                                <RowDefinition Height="Auto" />
                            </SelectiveScrollingGrid.RowDefinitions>
                            <DataGridCellsPresenter Grid.Column="1"
                                ItemsPanel="{TemplateBinding ItemsPanel}"
                                SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                            <DataGridDetailsPresenter Grid.Row="1"
                                Grid.Column="1"
                                SelectiveScrollingGrid.SelectiveScrollingOrientation="{Binding AreRowDetailsFrozen, ConverterParameter={x:Static SelectiveScrollingOrientation.Vertical},
                                  Converter={x:Static DataGrid.RowDetailsScrollingConverter},
                                  RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"
                                Visibility="{TemplateBinding DetailsVisibility}" />
                                                    <DataGridRowHeader Grid.RowSpan="2" SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
                                                        Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.Row},
                                                                        Converter={x:Static DataGrid.HeadersVisibilityConverter},
                            RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
                        </SelectiveScrollingGrid>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal" />
                                <VisualState x:Name="Normal_AlternatingRow">
                                    <Storyboard>
                                        <ColorAnimationUsingKeyFrames Storyboard.TargetName="DGR_Border" 
                                            Storyboard.TargetProperty="(Panel.Background).(GradientBrush.GradientStops)[0].(GradientStop.Color)">
                                            <EasingColorKeyFrame KeyTime="0" Value="#AAF0C570" />
                                        </ColorAnimationUsingKeyFrames>
                                        <ColorAnimationUsingKeyFrames Storyboard.TargetName="DGR_Border" 
                                            Storyboard.TargetProperty="(Panel.Background).(GradientBrush.GradientStops)[1].(GradientStop.Color)">
                                            <EasingColorKeyFrame KeyTime="0" Value="#AAFF7F00" />
                                        </ColorAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Normal_Selected">
                                    <Storyboard>
                                        <!-- ColorAnimation here same as Normal_AlternatingRow state -->
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <!-- ColorAnimation here same as Normal_AlternatingRow state -->
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Border>                        
                </ControlTemplate>
            </Setter.Value>
          <Style.Triggers>
              <DataTrigger Binding="{Binding Active}" Value="Hold">
                 <Setter Property="Background" Value="Red" />
             </DataTrigger>
        </Style.Triggers>
        </Setter>                
    </Style>

一如既往，任何帮助都会很棒。谢谢中号

Answer 1

您是否需要更改DataGridRow的行为，或者是否足以改变样式？

如果您只需要更改基于属性的行突出显示，那么您应该能够使用更简单的Style，如下所示：

    <!-- A brush -->
    <LinearGradientBrush x:Key="BgBrush1" StartPoint="0,0" EndPoint="0,1">
        <GradientStop Offset="0" Color="#888888"/>
        <GradientStop Offset="1" Color="#FFFFF86E"/>
    </LinearGradientBrush>

    <!-- Your row style -->
    <Style x:Key="HighlightRow" TargetType="{x:Type DataGridRow}">
        <Style.Triggers>
            <DataTrigger Binding="{Binding StatusGood}" Value="Hold">
                <Setter Property="Background" Value="{StaticResource BgBrush1}" />
            </DataTrigger>
        </Style.Triggers>
    </Style>

您应该能够在DataGrid中根据需要将样式用作StaticResource RowStyle属性的<DataGrid DataContext="{Binding OrderBlock}" Name="dataGridOrdersGood" ItemsSource="{Binding Orders}" RowStyle="{StaticResource HighlightRow}" />来应用样式：

DataTrigger

编辑：

如果您想保留其余样式并使用控件模板，可以将ControlTemplate.Triggers放在TargetName中，还必须提供 <Style x:Key="DG_Row" TargetType="{x:Type DataGridRow}"> <Setter Property="Template"> <Setter.Value>  <ControlTemplate TargetType="{x:Type DataGridRow}"> <Border x:Name="DGR_Border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" SnapsToDevicePixels="True">  </Border> <ControlTemplate.Triggers> <DataTrigger Binding="{Binding StatusGood}" Value="Send"> <Setter TargetName="DGR_Border" Property="Background" Value="{StaticResource BgBrush1}"/> </DataTrigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style>属性，指定您希望触发器操作的元素，因此使用我的上面的画笔和您的初始代码：

DGR_Border

{{1}}是你给现有渐变边界的名称。

WPF Datagrid根据值触发行颜色

1 个答案: