Url Available

public static bool UrlAvailable(this string httpUrl)
{
if (!httpUrl.StartsWith("http://") || !httpUrl.StartsWith("https://"))
httpUrl = "http://" + httpUrl;
try
{
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(httpUrl);
myRequest.Method = "GET"
myRequest.ContentType = "application/x-www-form-urlencoded"
HttpWebResponse myHttpWebResponse =
   (HttpWebResponse)myRequest.GetResponse();
return true;
}
catch
{
return false;
}
}