Go4Expert - Switch Case Options Problem

Hi If i have switch statement look like this and after getting or display function or by entering wrong character(default) how can i go to same screen which will display different options. As i know there are goto statements but that is not recommended? So please can anybody recommend me what to use or to do?

Code:

switch (s)

            {

                case "g":

                uname.getUserName();

                break;

    

                case "v":

                uname.DisplayUserName();

                break;

               

                default:

                Console.WriteLine("Please select correct choice...");

Thanks