HttpWebRequest Unable to connect to remote server

Let's write an example:

String url = "http://127.0.0.1"

HttpWebRequest request = (HttpWebRequest) httpwebrequest.create (URL);
Request. Method = "POST";
Request. ContentType = "application/x-www-form-urlencoded";
Request. ContentLength = Postdata.length;
Request. Timeout = 6000;

HttpWebResponse response = null;
Try
{
StreamWriter SW = newstreamwriter (Request. GetRequestStream ());

...

}

catch (Exception ex)

{

Return ex.    Message; Unable to connect to remote server

}

Then try to enter "http://127.0.0.1" or "http://localhost/" in the Web page to be told that you cannot connect. The workaround is to:

I am using the Win7. Open Control Panel, open or close Windows features, if shown:

Wait a moment, tick the "Internet Information Services" system will be checked by default on the "Web management Tools" and "World Wide Web Services", the system will be automatic update installation. After success, enter "http://127.0.0.1" or "http://localhost/" again to see the following effect:

Represents ok!

HttpWebRequest Unable to connect to remote server