Question

I’ve created a listbox, to which i can add and delete items dynamically UI changes accordingly and it works fine.

<ListBox Name="MsgsList" ItemsSource="{Binding Items}" Style="{StaticResource MsgsBoxStyle}">
    <ListBox.ItemTemplate>
        <DataTemplate x:Name="MsgsDataTemplate">
            <StackPanel Tag="{Binding MsgTagInfo}" ManipulationCompleted="StackPanel_Msgs_ManipulationCompleted">

                <toolkit:GestureService.GestureListener>
                    <toolkit:GestureListener Hold="GestureListener_Hold" Tap="GestureListener_Tap"/>
                </toolkit:GestureService.GestureListener>

                <Grid x:Name="ContentPanelInner" Grid.Row="1" Width="500">
                    <StackPanel x:Name="stackPanelInner" Width="500">

                        <Grid VerticalAlignment="Top" Width="500">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition />
                                <ColumnDefinition />
                            </Grid.ColumnDefinitions>

                            <TextBlock Grid.Column="0" Text="{Binding MsgTitle}" Style="{StaticResource MsgLine1}"  />
                            <TextBlock Grid.Column="1" Text="{Binding MsgDate}" Style="{StaticResource MsgDate}" />
                        </Grid>
                        <TextBlock Text="{Binding MsgBody}" Style="{StaticResource MsgLine2}" />
                    </StackPanel>
                </Grid>
            </StackPanel>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

but i didn’t understand how to change a style for a particular item’s textblock, say based on some condition, if i want to change color of specific item’s textbox(s), not sure how to access that.

can somebody please help me with this? thanks.

Answer 1

I If you just want to change on aspect of an items style, for example its color, you could expose that as property of the model object you are binding. For example, add a property TextColor and bind it as follows:

<TextBlock Text="{Binding MsgBody}" Style="{StaticResource MsgLine2}">
  <TextBlock.Color>
    <SolidColorBrush Color="{Binding TextColor}"/>
  </TextBlock.Color>
</TextBlock>

This will take precedence over the colour defined via the style.