How, using the Wapper (Decorator/Wrapper) pattern, to inherit a sealed class?

Question

WPF

There is a PathFigureCollection class, it is sealed, I need to inherit it using Wrapper.

Answer 1

It is sealed for this, so that it is not inherited. Wrapper is not a way to inherit. You can completely reproduce the class interface on the wrapper (even better if PathFigureCollection has a declared interface - implement it) and use this wrapper instead of PathFigureCollection.
Something like this:

public class PathFigureCollectionWrapper
{
  private PathFigureCollection _pfc;

  public PathFigureCollectionWrapper(PathFigureCollection pfc)
  {
    _pfc = pfc;
  }

  public int Method()
  {
    return _pfc.Method();
  }
}

the desired wrapper methods simply contain calls to the wrapped class instance.
Resharper, by the way, generates wrappers in one click.