你能在数据绑定的WPF样式中做"数学"吗？

我有一个按钮控件样式,我想从数据绑定版本更改填充,以调整需要2像素偏移的字形.我将使用SimpleStyles.xaml中的SimpleButton作为示例(...显示为了简洁而删除触发器代码的位置):

我想要做的是在Padding ="{TemplateBinding Padding}"中添加一些额外的边距.像Padding ="{TemplateBinding Padding} + 2,0,0,0"之类的东西.

是否有XAML语法？如果没有,在代码(Decorator？)中执行此操作时是否有最好的方法？

目前XAML不解析Binding语法等中的表达式.但是,您可以使用IValueConverter或IMul​​tiValueConverter来帮助自己:

XAML:

    
       
         
             
         
         
             
                 
                     
                         2,0,0,0
                     
                 
             
         
 ...
  

IValueConverter代码背后:

public class ThicknessAdditionConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (value == null) return new Thickness(0, 0, 0, 0);
        if (!(value is Thickness)) throw new ArgumentException("Value not a thickness", "value");
        if (!(parameter is Thickness)) throw new ArgumentException("Parameter not a thickness", "parameter");

        var thickness = new Thickness(0, 0, 0, 0);
        var t1 = (Thickness)value;
        var t2 = (Thickness)parameter;

        thickness.Left = t1.Left + t2.Left;
        thickness.Top = t1.Top + t2.Top;
        thickness.Right = t1.Right + t2.Right;
        thickness.Bottom = t1.Bottom + t2.Bottom;

        return thickness;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}