Get Portless Url

            Uri urlnew =new Uri( "http://igrid103:1990");
            string split = urlnew.Scheme + Uri.SchemeDelimiter + urlnew.Host+ ":" + uri.Port;
            Console.WriteLine(split);
            Console.ReadLine();
The Detail of the above code comes below

             //urinew.scheme==http
            //uri.schemedelimiter=://
            //urlnew.Host=igrid103
              uri.port=1990;