c# help using system.uri functions
<p>i have a STRING in C# with a long url such as:
<a href="http://mysite.com/testing/testingPages/area/ten/p1.aspx" rel="nofollow">http://mysite.com/testing/testingPages/area/ten/p1.aspx</a></p>

<p>how can i use system.uri class to get the <a href="http://mysite.com" rel="nofollow">http://mysite.com</a> part only ?</p>
