WPF: How to autosize Path to its container?

Question

I have a Path that must resize to its StackPanel container.

Answer 1

If you want this with a constant stroke width that isn't scaled, you can use a custom Shape. Shapes in WPF effectively encapsulate scaling a geometry and applying a stroke afterwards, which means you can have a scaled path that also always has the same stroke width.

Creating a shape is quite easy:

public class MyShape : Shape
{
  public override Geometry DefiningGeometry
  {
    get
    {
      // Create your geometry here
    }
  }
}