How to deal with a sealed class when I wanted to inherit and add properties

Question

In a recent question on Stack Overflow, I asked how I might parse through a file name to extra meta info about a file.

After I worked through that problem, I decided

Answer 1

You could just expose the properties on FileInfo you care about. Something like this:

public long Length { get { return FileInfo.Length; } }

This obviously becomes less practical if you want to delegate a lot of properties to FileInfo.