C# 其长度自调整至主面板的直线'；s ActualWidth属性（数据绑定）

我有一个垂直的StackPanel，我希望它包含行子级，其.X2值绑定到父StackPanel的实际宽度。比如：

StackPanel sp = new StackPanel();
sp.Orientation = Orientation.Vertical;
(...)
Line line = new Line();
line.X1 = 0;
line.X2 = <Some binding to sp.ActualWidth>;
// line.Y1 = line.Y2 - will it set it's value to 0 by default?
line.StrokeThickness = 2;
(...)
sp.Children.Add(line);

StackPanel sp=new StackPanel（）；
sp.方向=方向垂直；
(...)
行=新行（）；
line.X1=0；
line.X2=；
//line.Y1=line.Y2-默认情况下是否将其值设置为0？
line.StrokeThickness=2；
(...)
sp.Children.Add（行）；

---

我应该使用INotifyPropertyChanged接口吗？这是最合适的方法吗？

无需更改InotifyProperty

只需创建一个绑定并将其设置为行的X2属性

        StackPanel sp = new StackPanel();
        sp.Orientation = Orientation.Vertical;
        Line line = new Line();
        line.X1 = 0;
        var bind = new Binding()
        {
            Source = sp,
            Path = new PropertyPath("ActualWidth")
        };
        BindingOperations.SetBinding(line, Line.X2Property, bind);
        line.StrokeThickness = 2;
        line.Stroke=Brushes.Black;
        line.Margin=new Thickness(10);
        sp.Children.Add(line);

---

INotifyPropertyChanged不是必需的

只需创建一个绑定并将其设置为行的X2属性

        StackPanel sp = new StackPanel();
        sp.Orientation = Orientation.Vertical;
        Line line = new Line();
        line.X1 = 0;
        var bind = new Binding()
        {
            Source = sp,
            Path = new PropertyPath("ActualWidth")
        };
        BindingOperations.SetBinding(line, Line.X2Property, bind);
        line.StrokeThickness = 2;
        line.Stroke=Brushes.Black;
        line.Margin=new Thickness(10);
        sp.Children.Add(line);

---

除了具有bound

X2

属性和

StrokeThickness

为2的行之外，另一种选择是高度为2的矩形。其宽度自动设置为StackPanel宽度

var sp = new StackPanel
{
    Orientation = Orientation.Vertical
};
...
var line = new Rectangle
{
    Height = 2,
    Fill = Brushes.Black
};
sp.Children.Add(line);

---

除了具有bound

X2

属性和

StrokeThickness

为2的行之外，另一种选择是高度为2的矩形。其宽度自动设置为StackPanel宽度

var sp = new StackPanel
{
    Orientation = Orientation.Vertical
};
...
var line = new Rectangle
{
    Height = 2,
    Fill = Brushes.Black
};
sp.Children.Add(line);