How to convert Quoted-Print String
<p>I'm working on French String in .NET
Decoding a Mail body , I receive "Chasn=C3=A9 sur illet"
I would like to get "Chasné sur illet" 
and i don't find any solution aver 2 days web search.</p>

<p>C# ou VB.NET
Can anyone helps me ?</p>

<p>thanks </p>