Getting Status Code of a Web Request "MKCOL"

try
{

System.Net.HttpWebRequest Request = System.Net.HttpWebRequest)HttpWebRequest.Create(folderURI);
Request.Method = "MKCOL";
System.Net.HttpWebResponse Response = (System.Net.HttpWebResponse)Request.GetResponse();
}
catch (WebException ex)
{
HttpWebResponse response = (HttpWebResponse)ex.Response;
if (response.statusCode == 405)
{
Console.WriteLine("The MKCOL method can only be performed on a deleted or non-existent resource.");
}
}