Get domain name of a url in C# / .NET [duplicate]

Answer 1

You can try this. This can handle many kind of root domain if you define it in an array.

string sURL = "http://subdomain.website.com/index.htm";
var host = new System.Uri(sURL).Host.ToLower();

string[] col = { ".com", ".cn", ".co.uk"/*all needed domain in lower case*/ };
foreach (string name in col)
{
    if (host.EndsWith(name))
    {
        int idx = host.IndexOf(name);
        int sec = host.Substring(0, idx - 1).LastIndexOf('.');
        var rootDomain = host.Substring(sec + 1);
    }
}