public static string GetDomainName(string url)
{
if (string.IsNullOrWhiteSpace(url))
{
return(string.Empty);
}
if (url.StartsWith("."))
{
url = url.Remove(0, 1);
}
if (!url.Contains("www."))
{
url = "www." + url;
}
if (!url.Contains("://"))
{
url = "http://" + url;
}
var host = new System.Uri(url).Host;
return(host.Substring(host.LastIndexOf('.', host.LastIndexOf('.') - 1) + 1));
}