ConsoleKey.Backspace
using System; using System.Collections.Generic; class MainClass { public static void Main() { ConsoleKeyInfo key; List<char> input = new List<char>(); do{ key = Console.ReadKey(true); if (key.Key == ConsoleKey.F1) { Console.WriteLine("F1"); } if (key.Key == ConsoleKey.Backspace) { if (input.Count > 0) { input.RemoveAt(input.Count - 1); Console.Write(key.KeyChar); } }else if (key.Key == ConsoleKey.Escape){ Console.Clear(); Console.WriteLine("Input: {0}\n\n",new String(input.ToArray())); input.Clear(); }else if (key.Key >= ConsoleKey.A && key.Key <= ConsoleKey.Z){ input.Add(key.KeyChar); Console.Write(key.KeyChar); } } while (key.Key != ConsoleKey.X || key.Modifiers != ConsoleModifiers.Alt); } }