XAML de mi ListBox

<ListBox x:Name="ListBoxTransaction" Grid.Column="2" HorizontalAlignment="Left" Height="511" Margin="0,119,0,0" Grid.Row="1" VerticalAlignment="Top" Width="475" Grid.RowSpan="2">
                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <StackPanel x:Name="StackPanelListBox" Orientation="Horizontal" Width="Auto" Height="Auto">
                            <CheckBox IsChecked="{Binding cleared}" Width="100"></CheckBox>
                            <TextBlock Text="{Binding date}" Width="100"></TextBlock>
                            <TextBlock Text="{Binding Amount}" Width="100"> </TextBlock>
                            <TextBlock Text="{Binding descripcion}" Width="100"></TextBlock>
                        </StackPanel>
                    </DataTemplate>
                </ListBox.ItemTemplate>
            </ListBox>