Use do while to read console input

   
 
using System;

public class MainClass {
    static void Main() {
        string resp;
        do {
            Console.WriteLine("Menu

1 - Task A");
            Console.WriteLine("2 - Task B");
            Console.WriteLine("E - E(xit)");
            resp = (Console.ReadLine()).ToLower();
        }
        while (resp != "e");
    }
}