在控制台应用程序中异常用户的密码

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using System; using System.Text; class KeyNumber{ public static void Main(){ Console.Write("Input a password: "); StringBuilder sb = new StringBuilder(); while (true){ ConsoleKeyInfo cki = Console.ReadKey(true); if (cki.Key == ConsoleKey.Enter){ Console.WriteLine(); break; } if (cki.Key == ConsoleKey.Backspace){ if (sb.Length > 0){ Console.Write("/b/0/b"); sb.Length--; } continue; } Console.Write('*'); sb.Append(cki.KeyChar); } Console.WriteLine("Your password is: {0}", sb.ToString()); } }