我如何更改所选wpf组合项的前景色 我有一个组合项目的数据模板，文本块有前景黑色，其中项目被选中我喜欢前景变为白色
<ComboBox view:ComboBoxDropdownBehavior.OpenDropDownAutomatically="True" OverridesDefaultStyle="False"
ItemsSource="{Binding TopButtonMenuItems}" IsEditable="False" >
<ComboBox.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}">Transparent</SolidColorBrush>
</ComboBox.Resources>
<ComboBox.Template>
<ControlTemplate TargetType="ComboBox">
<Grid>
<Border FocusVisualStyle="{x:Null}" x:Name="Border" Grid.ColumnSpan="2" CornerRadius="2" BorderThickness="1" BorderBrush="#647887">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CheckStates">
<VisualState x:Name="Checked">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="Border">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush>#FFFFFF</SolidColorBrush>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unchecked" />
<VisualState x:Name="Indeterminate" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<!--<Border.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFFFFF" />
<GradientStop Color="#D3D8DD" Offset="1.0" />
</GradientStopCollection>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Border.Background>-->
</Border>
<StackPanel>
<view:SmartAgentPopup PlacementTarget="{Binding ElementName=ContentSite}"
x:Name="PART_Popup" Placement="Bottom" StaysOpen="True"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True" Focusable="False" PopupAnimation="Slide"
VerticalOffset="-1">
<Grid x:Name="DropDown" SnapsToDevicePixels="True" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border Width="180" x:Name="DropDownBorder" SnapsToDevicePixels="True" BorderThickness="1"
BorderBrush="White" Background="#E6E6E6">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
<!--Margin="4,6,4,6"-->
</Border>
</Grid>
</view:SmartAgentPopup>
<Button >
<Button.Template>
<ControlTemplate>
<StackPanel>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup Name ="CommonStates">
<VisualState Name="Normal"/>
<VisualState Name="MouseOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ActiveImage" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MouseOverImage" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ActiveImage" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PressedImage" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ActiveImage" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="DisabledImage" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Image FocusVisualStyle="{x:Null}" Name="ActiveImage" Height="50" Width="16" Source="/dbMotion.SmartAgent.Client.Viewer;component/Resources/TopButtonMenu.PNG"/>
<Image FocusVisualStyle="{x:Null}" Name="MouseOverImage" Height="50" Width="16" Source="/dbMotion.SmartAgent.Client.Viewer;component/Resources/TopButtonMenuPressed.PNG" Visibility="Collapsed"/>
<Image FocusVisualStyle="{x:Null}" Name="PressedImage" Height="50" Width="16" Source="/dbMotion.SmartAgent.Client.Viewer;component/Resources/TopButtonMenuPressed.PNG" Visibility="Collapsed"/>
<Image FocusVisualStyle="{x:Null}" Name="DisabledImage" Height="50" Width="16" Source="/dbMotion.SmartAgent.Client.Viewer;component/Resources/TopButtonMenu.PNG" Visibility="Collapsed"/>
</StackPanel>
</ControlTemplate>
</Button.Template>
</Button>
</StackPanel>
</Grid>
</ControlTemplate>
</ComboBox.Template>
<ComboBox.ItemTemplate>
<DataTemplate>
<Button HorizontalAlignment="Stretch">
<Button.Template>
<ControlTemplate>
<Grid MinWidth="{TemplateBinding ActualWidth}" Focusable="False" HorizontalAlignment="Stretch">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup Name="CommonStates">
<VisualState Name="Normal"/>
<VisualState Name="MouseOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MouseOverRect" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Name="MouseOverRect" Visibility="Hidden" Fill="{StaticResource HighlightBrush}" />
<Border Background="Transparent">
<StackPanel Margin="2" Orientation="Vertical">
<view:SmartAgentTextBlock x:Name="Text" Foreground="Black"
Text="{x:Static Viewer:Messages.CollaborateMenuItem}" VerticalAlignment="Center" Margin="4,0,0,0"
FontFamily="{Binding Source={x:Static Properties:Settings.Default}, Path=VPOFontFamily, Mode=OneTime}"
FontSize="12"
MinWidth="76"/>
<Rectangle Height="1" Margin="2" Fill="#FFCECBCB" Width="178" />
</StackPanel>
</Border>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
由于
答案 0 :(得分：1)
解决方案很简单。我刚刚在comobo框项目模板中的按钮的控制模板中添加了另一个ObjectAnimationUsingKeyFrames.ObjectAnimationUsingKeyFrames将设置前景白色MouseOver
<ComboBox.ItemTemplate>
<DataTemplate>
<Button Name="btn" HorizontalAlignment="Stretch">
<Button.Template>
<ControlTemplate>
<Grid MinWidth="{TemplateBinding ActualWidth}" Focusable="False" HorizontalAlignment="Stretch">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup Name="CommonStates">
<VisualState Name="Normal"/>
<VisualState Name="MouseOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MouseOverRect" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Text" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" >
<DiscreteObjectKeyFrame.Value>
<Brush>White</Brush>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Name="MouseOverRect" Visibility="Hidden" Fill="{StaticResource HighlightBrush}" />
<Border Background="Transparent">
<StackPanel Margin="2" Name="MainGrid" Orientation="Vertical">
<TextBlock Name="Text" Foreground="Black"
Text="{x:Static Viewer:Messages.CollaborateMenuItem}" VerticalAlignment="Center" Margin="4,0,0,0"
FontFamily="{Binding Source={x:Static Properties:Settings.Default}, Path=VPOFontFamily, Mode=OneTime}"
FontSize="12"
MinWidth="76"/>
<Rectangle Height="1" Margin="2" Fill="#FFCECBCB" Width="178" />
</StackPanel>
</Border>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
</DataTemplate>
</ComboBox.ItemTemplate>