2

我有一个小问题，我创建了一个ListBox只包含 2 个项目的项目。每个项目都是一个属性设置为黑色的Path控件。Fill

现在，我要做的是，当您选择列表框中的一项时更改此 Fill 属性的颜色...我认为这应该使用Style. 但是这样做时，样式包含一个ContentPresenter映射到路径的内容，并且此 ContentPresenter 没有Fill属性可以通过IsSelected触发器进行更改！

所以换句话说，我怎样才能仍然使用映射填充属性的样式？

我当前Window在WPF项目中的 XAML 代码：

<Window
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="XAMLPathStyleProblem.MainWindow"
    x:Name="Window"
    Title="MainWindow"
    Width="640" Height="480">
    <Window.Resources>
        <Style x:Key="ListBoxItemStyle" TargetType="{x:Type ListBoxItem}">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
            <Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
            <Setter Property="Padding" Value="2,0,0,0"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ListBoxItem}">
                        <Border x:Name="Bd" SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsSelected" Value="true">
                                <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/>                             
                            </Trigger>
                            <MultiTrigger>
                                <MultiTrigger.Conditions>
                                    <Condition Property="IsSelected" Value="true"/>
                                    <Condition Property="Selector.IsSelectionActive" Value="false"/>
                                </MultiTrigger.Conditions>
                                <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
                            </MultiTrigger>
                            <Trigger Property="IsEnabled" Value="false">
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>

    <Grid x:Name="LayoutRoot">
            <ListBox x:Name="ImageBar" ItemContainerStyle="{DynamicResource ListBoxItemStyle}">
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal" VerticalAlignment="Top" />
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
            <ListBoxItem>
                <Path Data="M15.992466,14.680105C20.892824,14.680104 23.97299,17.360288 28.013305,17.360288 31.943504,17.360288 34.333683,14.680104 39.994102,14.680105 44.274425,14.680104 48.804641,17.000391 52.034961,21.0308 41.454162,26.831151 43.174373,41.942682 53.865043,45.983101 52.394974,49.24342 51.694851,50.703518 49.794819,53.583672 47.154625,57.614079 43.424389,62.624561 38.803959,62.664604 34.703705,62.704647 33.643696,59.994431 28.073246,60.024464 22.50292,60.054249 21.342806,62.714657 17.23254,62.674614 12.622241,62.634571 9.0819604,58.104115 6.441766,54.083717 -0.95864094,42.822647 -1.7287129,29.611443 2.8315349,22.590761 6.0717456,17.600301 11.19209,14.680104 15.992466,14.680105z M38.751411,0C39.321331,3.8093758 37.761547,7.538764 35.701835,10.178331 33.502144,12.997869 29.702673,15.197509 26.033186,15.077528 25.373277,11.438125 27.093038,7.6887398 29.172746,5.1591539 31.462427,2.3696117 35.39188,0.23996067 38.751411,0z"
                      Fill="Black" />
            </ListBoxItem>
            <ListBoxItem>
                <Path Data="M32.127438,4.0459317E-05C34.679321,-0.0059787218,51.370113,0.63573532,60.553993,18.050023L60.522991,18.050023 60.543671,18.086075C61.200066,19.24132 68.004066,31.93957 59.575981,47.967091 59.575981,47.967091 51.176838,64.148377 30.558096,63.870453L29.65756,63.847004 29.649204,63.861397C29.644096,63.870198,29.641504,63.874661,29.641504,63.874661L29.638971,63.874695 29.681444,63.800747C30.804413,61.84562,39.865662,46.068413,42.345753,41.710415L42.378082,41.653572 42.392643,41.638874 42.472183,41.501145 42.692501,41.246766C44.087284,39.55642,45.09919,37.538369,45.595421,35.325478L45.613995,35.233231 45.681602,34.931549C45.857914,34.084336,45.977459,33.046578,45.939392,31.839535L45.927822,31.607016 45.927765,31.604247 45.927345,31.597495 45.913135,31.311926 45.901112,31.172703 45.89138,31.015126 45.867527,30.783802 45.865814,30.76396 45.8638,30.747662 45.831325,30.432713C45.783504,30.046782,45.720222,29.665644,45.64212,29.289938L45.605244,29.129017 45.579826,29.001641C45.3101,27.769034 44.871658,26.423209 44.200989,24.977549 43.870582,24.491171 43.539108,24.000555 43.182049,23.514327L42.899601,23.140976 60.287002,18.042616C60.287002,18.042616,39.292564,18.022913,34.351002,18.039915L34.393581,18.050023 34.172077,18.050023C33.849613,18.050023,33.54248,18.050023,33.252323,18.050023L33.158501,18.050023 32.880497,18.023783C32.497307,17.992794 32.109821,17.977 31.718649,17.977 31.350422,17.977 30.985464,17.990992 30.624279,18.018473L30.292705,18.050023 30.278829,18.050023C30.225145,18.050023 30.197481,18.050023 30.197481,18.050023 30.197481,18.050023 30.175093,18.049284 30.131918,18.049599 29.747402,18.052403 27.714258,18.138693 25.166611,19.573328L25.156681,19.579142 25.090729,19.612418C22.198151,21.138638,19.8955,23.632718,18.613605,26.663617L18.496868,26.959704 5.5749997,14.177C5.5749997,14.177,15.021078,30.765849,17.85829,35.692574L17.988001,35.917668 18.035503,36.093228C19.728666,42.05547 25.213291,46.422997 31.718649,46.422997 32.332252,46.422997 32.936783,46.384125 33.529907,46.308712L33.816097,46.268658 29.596954,63.874993 29.542429,63.874833C28.213777,63.865578 13.814976,63.407895 4.1510181,48.093563 4.1510176,48.093563 -5.6624084,32.728032 4.8882693,15.012328L5.3907794,14.192161 5.3934535,14.187385C5.6228327,13.780242 13.109029,0.74591898 31.796461,0.0057129142 31.796461,0.0057133239 31.911178,0.00055203911 32.127438,4.0459317E-05z"
                      Fill="Black" />
            </ListBoxItem>
        </ListBox>
    </Grid>
</Window>
4

2 回答 2

1

我建议您将 MVVM 模式与 MVVM Light Toolkit 一起使用。然后，您应该创建要在列表中显示的数据集合。在您的情况下，它可以是数据和填充（颜色）。然后你需要处理 Click 事件，仅此而已。我有提供这种功能的代码，所以如果你想要它，请询问。

但在你的情况下（没有 MVVM Light 工具包）我宁愿这样做：

<Style x:Key="Path" TargetType="{x:Type Path}">
    <Style.Triggers>
         <DataTrigger Binding="{Binding RelativeSource={RelativeSource, AncestorType={x:Type ListBoxItem}}, Path=IsSelected" Value="True">
             <Setter Property="Fill" Value="YouColor"/>
          </DataTrigger>
          <DataTrigger Binding="{Binding RelativeSource={RelativeSource, AncestorType={x:Type ListBoxItem}}, Path=IsSelected" Value="False">
             <Setter Property="Fill" Value="YouAnotherColor"/>
          </DataTrigger>
    </Style.Triggers>
</Style>

此致。马特乌什

于 2013-07-05T08:26:21.907 回答
0

好的...自己找到了答案！将 Path 控件内的 Fill 值更改为绑定值时，一切都按预期工作！

Fill="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"
于 2013-07-05T08:27:02.220 回答