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PODataTemplate Binding for ListBox to ViewModel property
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  1. PODataTemplate Binding for ListBox to ViewModel property
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    copied!<p>I'm using a ListBox with a DataTemplate.</p> <pre><code> &lt;ListBox Grid.Row="1" Grid.ColumnSpan="3" Grid.RowSpan="3" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ItemsSource="{Binding Order.OrderLines}" &gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;Grid&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition /&gt; &lt;RowDefinition /&gt; &lt;RowDefinition /&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition /&gt; &lt;ColumnDefinition /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;TextBlock Grid.Column="0"&gt;Qty&lt;/TextBlock&gt; &lt;TextBox Text="{Binding LineQty, Mode=TwoWay}" Grid.Column="1" /&gt; &lt;TextBlock Grid.Row="1" Grid.Column="0"&gt;Weight&lt;/TextBlock&gt; &lt;TextBox Text="{Binding Path=LineWeight}" Grid.Row="1" Grid.Column="1" /&gt; &lt;TextBlock Grid.Column="0" Grid.Row="2"&gt;Pallet Weights&lt;/TextBlock&gt; &lt;TextBox Text="{Binding PalletWeights}" Grid.Row="2" Grid.Column="1" /&gt; &lt;/Grid&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; &lt;/ListBox&gt; </code></pre> <p>The TextBox value is binding properly. The problem is I have a property on my ViewModel called "ViewMode" which I have the IsEnabled property of the TextBox bound to an App.xaml Style DataTrigger:</p> <pre><code> &lt;Style TargetType="{x:Type TextBox}"&gt; &lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding ViewMode}" Value="Add"&gt; &lt;Setter Property="BorderBrush" Value="White"&gt;&lt;/Setter&gt; &lt;Setter Property="BorderThickness" Value="2,2,0,0"&gt;&lt;/Setter&gt; &lt;Setter Property="BorderBrush" Value="Black"&gt;&lt;/Setter&gt; &lt;Setter Property="BorderThickness" Value="0,0,2,2"&gt;&lt;/Setter&gt; &lt;Setter Property="Background" Value="LightBlue"&gt;&lt;/Setter&gt; &lt;Setter Property="Foreground" Value="Black"&gt;&lt;/Setter&gt; &lt;Setter Property="FontWeight" Value="Bold"&gt;&lt;/Setter&gt; &lt;Setter Property="IsEnabled" Value="true"&gt;&lt;/Setter&gt; &lt;/DataTrigger&gt; &lt;DataTrigger Binding="{Binding ViewMode}" Value="Edit"&gt; &lt;Setter Property="BorderBrush" Value="White"&gt;&lt;/Setter&gt; &lt;Setter Property="BorderThickness" Value="2,2,0,0"&gt;&lt;/Setter&gt; &lt;Setter Property="BorderBrush" Value="Black"&gt;&lt;/Setter&gt; &lt;Setter Property="BorderThickness" Value="0,0,2,2"&gt;&lt;/Setter&gt; &lt;Setter Property="Background" Value="LightBlue"&gt;&lt;/Setter&gt; &lt;Setter Property="Foreground" Value="Black"&gt;&lt;/Setter&gt; &lt;Setter Property="FontWeight" Value="Bold"&gt;&lt;/Setter&gt; &lt;Setter Property="IsEnabled" Value="true"&gt;&lt;/Setter&gt; &lt;/DataTrigger&gt; &lt;DataTrigger Binding="{Binding ViewMode}" Value="View"&gt; &lt;Setter Property="IsEnabled" Value="false"&gt;&lt;/Setter&gt; &lt;Setter Property="Foreground" Value="Gray"&gt;&lt;/Setter&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;Setter Property="Margin" Value="2" /&gt; &lt;/Style&gt; </code></pre> <p>This works for all of my other TextBoxes. How do I get the IsEnabled property to work from within the DataTemplate? The DataContext of the ListBox is referencing the ViewModel property "Order", so I would think it should be able to see the ViewModel property "ViewMode".</p> <p>Thanks, -Sid.</p>
 

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