<p>Vous devez charger l’assembly <code>System.Web</code>. Utilisez l’applet de commande <code>Add-Type</code> comme ceci :</p>
<pre><code class="lang-auto">PS C:> [System.Web.HttpUtility]::UrlEncode("www.google.com")
Unable to find type [System.Web.HttpUtility].
PS C:> Add-Type -AssemblyName System.Web
PS C:> [System.Web.HttpUtility]::UrlEncode("www.google.com")
www.google.com
</code></pre>