WPF - ListBox ignores Style When ItemsSource is bound
- by Andy T
Hi,
I have created styled a ListBox in WPF so that it is rendered as a checkbox list.
When I populate the ListBox's items manually, the styling works perfectly. However, when I instead bind the ItemsSource of the ListBox to a static resource (an ItemsControl containing the required items), the styling is completely dropped.
Here's the style:
<Style x:Key="CheckBoxListStyle" TargetType="ListBox">
<Style.Resources>
<Style TargetType="ListBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Grid Margin="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<CheckBox IsChecked="{Binding IsSelected, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"/>
<ContentPresenter
Grid.Column="1"
Margin="2,0,0,0" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Style.Resources>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<WrapPanel Orientation="Vertical" />
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Background" Value="Transparent" />
</Style>
Here's the code for the ListBox that shows the style correctly:
<ListBox x:Name="ColumnsList"
Grid.Column="0"
Grid.Row="0"
Style="{StaticResource CheckBoxListStyle}"
BorderThickness="1">
<ListBox.Items>
<ListBoxItem>Test</ListBoxItem>
<ListBoxItem>Test2</ListBoxItem>
<ListBoxItem>Test3</ListBoxItem>
</ListBox.Items>
</ListBox>
Here's the code for the ListBox that ignores the style:
<ListBox x:Name="ColumnsList2"
Grid.Column="0"
Grid.Row="0"
Style="{StaticResource CheckBoxListStyle}"
BorderThickness="1"
ItemsSource="{Binding Source={StaticResource Test1}, Path=Items}">
</ListBox>
Hoping someone can help - I'm pretty new to all this and have tried everything I can think of, but everything I've read leads me to believe that setting ItemsSource should have the same outcome as setting the items manually, so I can't see any reason why this would not work.
Thanks,
AT
