namespace System { public abstract class UriParser { protected UriParser(); protected virtual string GetComponents(Uri uri, UriComponents components, UriFormat format); protected virtual void InitializeAndValidate(Uri uri, out UriFormatException parsingError); protected virtual bool IsBaseOf(Uri baseUri, Uri relativeUri); public static bool IsKnownScheme(string schemeName); protected virtual bool IsWellFormedOriginalString(Uri uri); protected virtual UriParser OnNewUri(); protected virtual void OnRegister(string schemeName, int defaultPort); public static void Register(UriParser uriParser, string schemeName, int defaultPort); protected virtual string Resolve(Uri baseUri, Uri relativeUri, out UriFormatException parsingError); } }