How to center a WPF CheckBox within a ListBoxItem - wpf

Question

I have a ListBox that uses an ItemContainerStyle. I have tried everything I can think of to get a CheckBox control to center vertically and horizontally. Any ideas?
<ListBox
IsSynchronizedWithCurrentItem="True"
Height="Auto" Width="Auto" DockPanel.Dock="Top"
ItemContainerStyle="{StaticResource lbcStyle}" />
<Style TargetType="ListBoxItem" x:Key="lbcStyle">
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="ContentTemplate" Value="{StaticResource editable}"/>
</Trigger>
</Style.Triggers>
<Setter Property="ContentTemplate" Value="{StaticResource nonEditable}"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/> '//i have tried stretch here also
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
</Style>
CheckBoxes get this style:
<Style x:Key="editorCheckBox" TargetType="{x:Type CheckBox}">
<Setter Property="MinWidth" Value="67" />
<Setter Property="Height" Value="25" />
<Setter Property="Margin" Value="5,0,5,0" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
Here are editable / non-editable:
<DataTemplate x:Key="editable">
<Border x:Name="brdEditable" Width="Auto" HorizontalAlignment="Stretch">
<DockPanel x:Name="dpdEditable" LastChildFill="True" Width="Auto" Height="Auto">
<Grid x:Name="grdEditable" Width="Auto" Height="Auto">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25" />
<ColumnDefinition Width="25" />
<ColumnDefinition Width="100" />
<ColumnDefinition Width="100" />
<ColumnDefinition Width="80" />
<ColumnDefinition Width="110" />
<ColumnDefinition Width="110" />
<ColumnDefinition Width="60" />
<ColumnDefinition Width="90" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
'...
<CheckBox x:Name="chkActive" Grid.Column="7" Height="25" Style="{StaticResource editorCheckBox}" ToolTip="Is Construction Active?" IsEnabled="true" Validation.ErrorTemplate="{StaticResource validationTemplate}">
<CheckBox.IsChecked>
<Binding Path="Active">
<Binding.ValidationRules>
<DataErrorValidationRule></DataErrorValidationRule>
<ExceptionValidationRule></ExceptionValidationRule>
</Binding.ValidationRules>
</Binding>
</CheckBox.IsChecked>
</CheckBox>
'...
<ContentControl Name="ExpanderContent" Visibility="Collapsed" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="14"></ContentControl>
</Grid>
</DockPanel>
</Border>
</DataTemplate>
<DataTemplate x:Key="nonEditable">
<Border x:Name="brdNonEditable" Width="Auto" HorizontalAlignment="Stretch">
<DockPanel Width="Auto" Height="25">
<Grid Width="Auto" Height="25">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25" />
<ColumnDefinition Width="25" />
<ColumnDefinition Width="100" />
<ColumnDefinition Width="100" />
<ColumnDefinition Width="80" />
<ColumnDefinition Width="110" />
<ColumnDefinition Width="110" />
<ColumnDefinition Width="60" />
<ColumnDefinition Width="90" />
</Grid.ColumnDefinitions>
<CheckBox x:Name="chkActive" Grid.Column="7" Height="25" Style="{StaticResource editorCheckBox}" ToolTip="Is Construction Active?" IsEnabled="false" Validation.ErrorTemplate="{StaticResource validationTemplate}">
<CheckBox.IsChecked>
<Binding Path="Active">
<Binding.ValidationRules>
<DataErrorValidationRule></DataErrorValidationRule>
<ExceptionValidationRule></ExceptionValidationRule>
</Binding.ValidationRules>
</Binding>
</CheckBox.IsChecked>
</CheckBox>
<Label Content="calCompDate" Style="{StaticResource editorLabelList}" Grid.Column="8" ToolTip="{Binding Path= CompDate}" />
</Grid>
</DockPanel>
</Border>
</DataTemplate>
And thanks so much to everyone who has tried to help me solve this!

Answer 1

Try setting the ScrollViewer.HorizontalScrollBarVisibility property to "Disabled" on the ListBox. This forces the item containers to have a fixed width; otherwise, they can have any horizontal size, and horizontal alignment cannot be calculated sensibly.
Vertical alignment should be a matter of modifying the ListBoxItem style, as per Donnelle's answer.
Edit: In your code snippets, the CheckBox is inside a Grid which is inside a DockPanel which is inside a Border. Which element are you trying to center exactly? Are you sure the rest of them don't interfere? Here's how it looks for me with my suggestion and HorizontalContentAlignment="Center", and only the checkbox in the data template:
One more edit: I copy/pasted your grid/dockpanel/border exactly as they appear in the snippets you pasted, and the result is exactly the same - items centered horizontally.

Answer 2

I've had the same issue to. Have you tried setting "HorizontalAlignment" directly on the ListBoxItem in the style? (not HorizontalContentAlignment)

Answer 3

Have you tried setting HorizontalContentAlignment to "Stretch" on the ListBox itself? I believe this is necessary to make each ListBoxItem fill the width of the ListBox.

Answer 4

Setting the height on the ListBoxItem style-- rather than the checkbox-- does what I think you're after.

Answer 5

The checkbox is aligned top-left. For a quick and dirty, I have updated the margin on the checkbox to 4,3,0,0 on a row heigh of 20. May need to be adjusted depending upon your row height and if you want a buffer on the left. The margin attribute can get you out of odd format situations if you don't have time to write your own template or use other controls/containers.