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POWP7: Change Textblock Foreground color based on another Textblock's value
 

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  1. POWP7: Change Textblock Foreground color based on another Textblock's value
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    <p>Say I have this XAML:</p> <pre><code>&lt;TextBlock Name="t1" Text="{Binding team1}" Foreground="White" FontSize="32" /&gt; &lt;ListBox Name="lbBooks" Width="441" Height="490" &gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate x:Name="d1" &gt; &lt;StackPanel Name="spMain"&gt; &lt;StackPanel Orientation="Horizontal" &gt; &lt;HyperlinkButton Content="{Binding BookName}" Margin="5" Width="230" TargetName="_blank" NavigateUri="{Binding BookWebsite}"/&gt; &lt;StackPanel Orientation="Vertical" HorizontalAlignment="Right" Margin="0,0,0,0" &gt; &lt;TextBlock Name="b1" Text="{Binding BookLine1}" Margin="5" Width="160" HorizontalAlignment="Right"&gt;&lt;/TextBlock&gt; &lt;TextBlock Name="b1U" Text="{Binding BookLine2}" Margin="5" Width="160" Foreground="Wheat" HorizontalAlignment="Right"&gt;&lt;/TextBlock&gt; &lt;TextBlock Name="b3" Text="{Binding BookLine3}" Margin="5" Width="160" DataContext="{Binding team1,Converter={StaticResource tbConverter}, ElementName=b3, Mode=TwoWay}" HorizontalAlignment="Right"&gt;&lt;/TextBlock&gt; &lt;/StackPanel&gt; &lt;/StackPanel&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; &lt;/ListBox&gt; </code></pre> <p>I want to change the foreground color of the TextBlock named "b3" depending on the value of TextBlock "t1". I know I need to implement a converter kind of like the one below:</p> <pre><code>public class TBConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { //do I need to check against the Textblock t1 value in here? if (value != null &amp;&amp; t1.Text == "Text that triggers change" ) { //need code to change Textblock foreground color } return null; } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } } </code></pre> <p>So,(1) what is the code I need in the converter to change the foreground color of the Textblock b3? And (2), am I calling the converter correctly in the datacontext of Textblock "b3"? Thank you!</p>
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