Wpf datatrigger绑定到viewmodel属性

我试图创建一个简单的样式数据触发器，从viewmodel属性中提取其绑定值，如下所示：

        <StackPanel Name="stackTextPanel" Orientation="Horizontal" Margin="0,8,0,0">
            <StackPanel.Style>
                <Style TargetType="{x:Type StackPanel}">
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="False">
                            <Setter Property="Margin" Value="0,8,0,0" />
                        </DataTrigger>
                        <DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="True">
                            <Setter Property="Margin" Value="0,48,0,0" />
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </StackPanel.Style>

但是，当我按下更改QuickDrucarPinned属性的按钮时，这仍然不起作用。我做错了什么

我实现了如下属性：

    private bool _quickDrawBarPinned = false;
    /// <summary>
    /// Indicates if the Quick Draw Bar is pinned (stuck) or unpinned (retractable)
    /// </summary>
    public bool QuickDrawBarPinned
    {
        get { return _quickDrawBarPinned; }
        set
        {
            _quickDrawBarPinned = value;
            OnPropertyChanged("QuickDrawBarPinned");
        }
    }

---

您可能会错过属性更改中的通知。请确认您的viewmodel是否实现INotifyPropertyChanged

public class ViewModel : INotifyPropertyChanged
{
    private bool quickDrawBarPinned;

    public bool QuickDrawBarPinned
    {
        get { return quickDrawBarPinned; }
        set { quickDrawBarPinned = value; RaisePropertyChanged("QuickDrawBarPinned"); }
    }

    public void RaisePropertyChanged(string propertyname)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyname));
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;
}

---

我认为你必须改用当地风格来赚取利润

    <StackPanel Name="stackTextPanel" Orientation="Horizontal">
        <StackPanel.Style>
            <Style TargetType="{x:Type StackPanel}">
                <Setter Property="Margin" Value="0,8,0,0" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="False">
                        <Setter Property="Margin" Value="0,8,0,0" />
                    </DataTrigger>
                    <DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="True">
                        <Setter Property="Margin" Value="0,48,0,0" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </StackPanel.Style>

我已更新了问题，以包含有关我的解决方案/问题的更多信息，该解决方案/问题确实实现了这一点。答对了，谢谢！我认为这两个答案的结合帮助了我，我忘记了首先包括变更通知，因为我以前尝试删除本地保证金属性，但它不起作用。因此，通过实现这两个答案，我解决了这个问题，谢谢！

public class ViewModel : INotifyPropertyChanged
{
    private bool quickDrawBarPinned;

    public bool QuickDrawBarPinned
    {
        get { return quickDrawBarPinned; }
        set { quickDrawBarPinned = value; RaisePropertyChanged("QuickDrawBarPinned"); }
    }

    public void RaisePropertyChanged(string propertyname)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyname));
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;
}

    <StackPanel Name="stackTextPanel" Orientation="Horizontal">
        <StackPanel.Style>
            <Style TargetType="{x:Type StackPanel}">
                <Setter Property="Margin" Value="0,8,0,0" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="False">
                        <Setter Property="Margin" Value="0,8,0,0" />
                    </DataTrigger>
                    <DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="True">
                        <Setter Property="Margin" Value="0,48,0,0" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </StackPanel.Style>