Using API

I am attempting to use an api using C#.

Sample call is:

https://www.namesilo.com/apibatch/registerDomainDrop?version=1&type=xml&key=12345&domain=namesilo.com&years=2&private=1&auto_renew=1

I then need to read the response that comes back in the format:

<namesilo>
    <request>
        <operation>registerDomainDropoperation>
        <ip>55.555.55.55ip>
    request>
    <reply>
        <code>300code>
        <detail>successdetail>
        <message>Your domain registration was successfully processed.message>
        <domain>namesilo.comdomain>
        <order_amount>7.77order_amount>
    reply>
namesilo>

Appreciate if someone could point me in right direction in terms of c# classes that I would use to make the api call. Thanks.