C# WebClient, Fiddler not working

[도한]

I try to download xml file through C# WebClient Class, and I try to view xml content body through Fiddler

WebClient client = new WebClient();

string xml = client.DownloadString(url);

but, Fiddler do not capturing the url

How can I capture that url?

Ask for help.

Thanks

[EricLaw]

Please see http://docs.telerik.com/fiddler/configure-fiddler/tasks/configuredotnetapp/ and http://blogs.telerik.com/fiddler/posts/13-01-08/capturing-traffic-from-.net-services-with-fiddler