System.UriParser.Resolve C# (CSharp) Method

        protected virtual string Resolve(Uri baseUri, Uri relativeUri, out UriFormatException parsingError)
        {
            if (baseUri.UserDrivenParsing)
                throw new InvalidOperationException(SR.Format(SR.net_uri_UserDrivenParsing, this.GetType().ToString()));

            if (!baseUri.IsAbsoluteUri)
                throw new InvalidOperationException(SR.net_uri_NotAbsolute);


            string newUriString = null;
            bool userEscaped = false;
            Uri result = Uri.ResolveHelper(baseUri, relativeUri, ref newUriString, ref userEscaped, out parsingError);

            if (parsingError != null)
                return null;

            if (result != null)
                return result.OriginalString;

            return newUriString;
        }