Check if a Url exists

UrlExists.cs

public static bool UrlExists(string url)
{
   try
   {
      var request = WebRequest.Create(url) as HttpWebRequest;
      if (request == null) return false;
      request.Method = "HEAD";
      using (var response = (HttpWebResponse)request.GetResponse())
      {
         return response.StatusCode == HttpStatusCode.OK;
      }
   }
   catch (UriFormatException)
   {
      //Invalid Url
      return false;
   }
   catch (WebException)
   {
      //Unable to access url
      return false;
   }
}