Retrieve domain from wildcard URI

I need a suggestion on how could I retrieve the domain from the following :

• *.yahoo.co.uk

• *.yahoo.com

so, in both cases, my method mus开发者_StackOverflow中文版t return yahoo.co.uk and yahoo.com.

Is there an easy way to do this, or I just have to struggle with strings and counting characters from the "." and stuff like that?

Thank you in advance.

Regards,

Andrei

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You can use TrimStart if you are lokking for stripping just the '.' and '*' characters:

String testString = "*.yahoo.co.uk";
Console.WriteLine(testString.TrimStart(new char[]{'.','*'}));

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if (s.StartsWith("*.")) s = s.Substring(2)