Button不会更新其风格

Question

所以我对XAML很陌生，我需要一些帮助解决以下问题。

我有三个按钮，只要一个项目有效并准备好保存就应该更新，这对于按钮和＃34;保存＆＃34;和＆＃34;关闭＆＃34;但按钮＆＃34; SaveAndClose＆＃34;不会与其他人一起更新，为什么会这样？

<Window.CommandBindings>
    ...
    <CommandBinding Command="{x:Static l:PartWindow.SaveAndCloseCommand}" Executed="SaveAndCloseExecuted" CanExecute="SaveAndCloseCanExecute"/>
</Window.CommandBindings>
...
<Grid>
    ...
    <np:NewPartsDetailsControl x:Name="NewPartsDetailsCtrl" Margin="30" Visibility="{Binding Path=DataContext.Part.IsNew, ElementName=thisCntrl, Converter={StaticResource VisibilityConverter}}"/>
    ...
    <Grid Grid.Row="1">
        ...
        <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Right">
            <StackPanel.Resources>
                <Style TargetType="Button" BasedOn="{StaticResource MainButton}">
                    <Setter Property="CommandTarget" Value="{Binding ElementName=PartsDetailsCtrl}" />
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding Path=Part.IsNew}" Value="True">
                            <Setter Property="CommandTarget" Value="{Binding ElementName=NewPartsDetailsCtrl}" />
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </StackPanel.Resources>

            ...
            <Button Command="{x:Static l:PartWindow.SaveAndCloseCommand}" 
                    Content="{x:Static p:Resources.SaveAndClose}"  
                    IsCancel="True"/>
            <Button Command="ApplicationCommands.Save" 
                    Content="{x:Static p:Resources.Save}"  />
            <Button Command="ApplicationCommands.Close" 
                    Content="{x:Static p:Resources.Close}"  
                    IsCancel="True"/>
        </StackPanel>
        ...
    </Grid>

using System.Windows.Input;

namespace WpfApp.Views.Parts
{
    public partial class PartWindow : SizeAdjustableWindow
    {
        public static RoutedCommand SaveAndCloseCommand = new RoutedCommand();
    }
}