完整的解决方案，香草c# .net 3.5+

剪切粘贴 ：）

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    namespace ConsoleReadPasswords
    {
        class Program
        {
            static void Main(string[] args)
            {
                Console.Write("Password:");

                string password = Orb.App.Console.ReadPassword();

                Console.WriteLine("Sorry - I just can't keep a secret!");
                Console.WriteLine("Your password was:\n<Password>{0}</Password>", password);

                Console.ReadLine();
            }
        }
    }

    namespace Orb.App
    {
        /// <summary>
        /// Adds some nice help to the console. Static extension methods don't exist (probably for a good reason) so the next best thing is congruent naming.
        /// </summary>
        static public class Console
        {
            /// <summary>
            /// Like System.Console.ReadLine(), only with a mask.
            /// </summary>
            /// <param name="mask">a <c>char</c> representing your choice of console mask</param>
            /// <returns>the string the user typed in </returns>
            public static string ReadPassword(char mask)
            {
                const int ENTER = 13, BACKSP = 8, CTRLBACKSP = 127;
                int[] FILTERED = { 0, 27, 9, 10 /*, 32 space, if you care */ }; // const

                var pass = new Stack<char>();
                char chr = (char)0;

                while ((chr = System.Console.ReadKey(true).KeyChar) != ENTER)
                {
                    if (chr == BACKSP)
                    {
                        if (pass.Count > 0)
                        {
                            System.Console.Write("\b \b");
                            pass.Pop();
                        }
                    }
                    else if (chr == CTRLBACKSP)
                    {
                        while (pass.Count > 0)
                        {
                            System.Console.Write("\b \b");
                            pass.Pop();
                        }
                    }
                    else if (FILTERED.Count(x => chr == x) > 0) { }
                    else
                    {
                        pass.Push((char)chr);
                        System.Console.Write(mask);
                    }
                }

                System.Console.WriteLine();

                return new string(pass.Reverse().ToArray());
            }

            /// <summary>
            /// Like System.Console.ReadLine(), only with a mask.
            /// </summary>
            /// <returns>the string the user typed in </returns>
            public static string ReadPassword()
            {
                return Orb.App.Console.ReadPassword('*');
            }
        }
    }

我对退格做了一些修改

        string pass = "";
        Console.Write("Enter your password: ");
        ConsoleKeyInfo key;

        do
        {
            key = Console.ReadKey(true);

            // Backspace Should Not Work
            if (key.Key != ConsoleKey.Backspace)
            {
                pass += key.KeyChar;
                Console.Write("*");
            }
            else
            {
                pass = pass.Remove(pass.Length - 1);
                Console.Write("\b \b");
            }
        }
        // Stops Receving Keys Once Enter is Pressed
        while (key.Key != ConsoleKey.Enter);

        Console.WriteLine();
        Console.WriteLine("The Password You entered is : " + pass);

如果我理解正确，你试图使退格删除屏幕上可见的*字符和缓存字符在你的传递变量?

如果是这样，那么只需将你的else块更改为:

            else
            {
                Console.Write("\b");
                pass = pass.Remove(pass.Length -1);
            }

读取控制台输入是困难的，你需要处理特殊的键，如Ctrl, Alt，还有光标键和退格/删除。在一些键盘布局中，像瑞典式Ctrl甚至需要输入直接存在于美国键盘上的键。我相信尝试使用“低级”console . readkey (true)来处理这个问题是非常困难的，所以最简单和最健壮的方法是在输入密码时禁用“控制台输入回声”，使用一点WINAPI。

下面的示例是基于从std::cin问题读取密码的答案。

    private enum StdHandle
    {
        Input = -10,
        Output = -11,
        Error = -12,
    }

    private enum ConsoleMode
    {
        ENABLE_ECHO_INPUT = 4
    }

    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern IntPtr GetStdHandle(StdHandle nStdHandle);

    [DllImport("kernel32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    private static extern bool GetConsoleMode(IntPtr hConsoleHandle, out int lpMode);

    [DllImport("kernel32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    private static extern bool SetConsoleMode(IntPtr hConsoleHandle, int dwMode);

    public static string ReadPassword()
    {
        IntPtr stdInputHandle = GetStdHandle(StdHandle.Input);
        if (stdInputHandle == IntPtr.Zero)
        {
            throw new InvalidOperationException("No console input");
        }

        int previousConsoleMode;
        if (!GetConsoleMode(stdInputHandle , out previousConsoleMode))
        {
            throw new Win32Exception(Marshal.GetLastWin32Error(), "Could not get console mode.");
        }

        // disable console input echo
        if (!SetConsoleMode(stdInputHandle , previousConsoleMode & ~(int)ConsoleMode.ENABLE_ECHO_INPUT))
        {
            throw new Win32Exception(Marshal.GetLastWin32Error(), "Could not disable console input echo.");
        }

        // just read the password using standard Console.ReadLine()
        string password = Console.ReadLine();

        // reset console mode to previous
        if (!SetConsoleMode(stdInputHandle , previousConsoleMode))
        {
            throw new Win32Exception(Marshal.GetLastWin32Error(), "Could not reset console mode.");
        }

        return password;
    }

您可以将键附加到一个累加链表中。

当接收到退格键时，从列表中删除最后一个键。

当您接收到enter键时，将列表折叠成字符串并执行其余工作。

我只是改进代码从问我简单，只是工作

    string pass = ""; //create empty password string
    Console.Write("Enter your password: ");
    ConsoleKeyInfo key;
    int passLen = 0; // base password length

    do
    {
        key = Console.ReadKey(true); //reading keyboard key

        if (key.Key == ConsoleKey.Escape) Environment.Exit(0); // If key is escape console will close (optional)

        if (key.Key != ConsoleKey.Backspace && key.Key != ConsoleKey.Enter) // on key with is not bacspase and enter 
        {
            pass += key.KeyChar; //password string add key value
            Console.Write("*"); // and print star as masked char 
            passLen++; // upgrading password length
        }
        else if (passLen > 0 && key.Key == ConsoleKey.Backspace) //if password have a any symbol and u press Backspace
        {   
                Console.Write("\b \b"); //Backspace delete star symbol and coursor back in line 
                passLen--; // password length is one less
                pass = pass[0..^1]; // new string passowrd is string without last charter 
        }
    } 
    while (key.Key != ConsoleKey.Enter); // if you press enter this stop execute with your password

    Console.WriteLine();
    Console.WriteLine("The Password You entered is : " + pass);