In WPF is there a way to change the Foreground of specific ListBoxItem from code behind?
I have this ListBox:
<ListBox x:Name="songsListBox" Background="{DynamicResource Gray}" Foreground="{DynamicResource TextColor}" HorizontalContentAlignment="Stretch" Style="{DynamicResource musicListBox}">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem" BasedOn="{StaticResource {x:Type ListBoxItem}}">
<EventSetter Event="MouseDoubleClick" Handler="ListBoxItem_MouseDoubleClick"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="{DynamicResource LigthGray}"/>
<Setter Property="BorderBrush" TargetName="Bd" Value="{DynamicResource LigthGray}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Selector.IsSelectionActive" Value="False"/>
<Condition Property="IsSelected" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="BorderBrush" TargetName="Bd" Value="{x:Null}"/>
<Setter Property="Background" Value="{DynamicResource LigthGray}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Selector.IsSelectionActive" Value="True"/>
<Condition Property="IsSelected" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="BorderBrush" TargetName="Bd" Value="{x:Null}"/>
<Setter Property="Background" Value="{DynamicResource LigthGray}"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="35*"/>
<ColumnDefinition Width="25*"/>
<ColumnDefinition Width="30*"/>
<ColumnDefinition Width="60"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Name}" Padding="4,0,4,0" Grid.Column="0"/>
<TextBlock Text="{Binding Artist}" Padding="4,0,4,0" Grid.Column="1"/>
<TextBlock Text="{Binding Album}" Padding="4,0,4,0" Grid.Column="2"/>
<TextBlock Text="{Binding Year}" Padding="4,0,4,0" Grid.Column="3"/>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
This ListBox is for showing a music library. I also have the same ListBox for a Queue.
I want to change foreground of ListBoxItem, when the song is playing in both ListBoxes. Is there any way to do it?
I don't want to have it using SelectedItem, because I would like to have a different color for the playing song than of the SelectedItem.
Assuming that the data model has a property IsPlaying, you could use the following DataTrigger to toggle the item container's foreground:
<ListView>
<ListView.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="Foreground" Value="Black" />
<Style.Triggers>
<DataTrigger Binding="{Binding IsPlaying}" Value="True">
<Setter Property="Foreground" Value="Red" />
</DataTrigger>
</Style.Triggers>
</Style>
</ListView.ItemContainerStyle>
</ListView>