c# - How to convert IDN to ASCII?

Question

What is the best way to convert an internationalized domain name to its ASCII-form?

I want to convert Bücher.ch into xn--bcher-kva.ch by using some sort of (free) .net code.

Answer 1

using System.Globalization;
...
IdnMapping idn = new IdnMapping();
MessageBox.Show(idn.GetAscii("www.kraków.pl"));