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

 do {
  key = Console.ReadKey(true);

  if (key.Key != ConsoleKey.Backspace) {
   pass += key.KeyChar;
   Console.Write("*");
  } else {
   Console.Write("\b \b");
   char[] pas = pass.ToCharArray();
   string temp = "";
   for (int i = 0; i < pass.Length - 1; i++) {
    temp += pas[i];
   }
   pass = temp;
  }
 }
 // Stops Receving Keys Once Enter is Pressed
 while (key.Key != ConsoleKey.Enter);

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

(我的)nuget包来做这个，基于上面的答案:

安装包PanoramicData。ConsoleExtensions

用法:

using PanoramicData.ConsoleExtensions;

...

Console.Write("Password: ");
var password = ConsolePlus.ReadPassword();
Console.WriteLine();

项目网址:https://github.com/panoramicdata/PanoramicData.ConsoleExtensions

欢迎拉请求。

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);
            }

采取顶部的答案，以及从其评论的建议，并将其修改为使用SecureString而不是String，测试所有控制键，而不是错误或在密码长度为0时向屏幕写入额外的“*”，我的解决方案是:

public static SecureString getPasswordFromConsole(String displayMessage) {
    SecureString pass = new SecureString();
    Console.Write(displayMessage);
    ConsoleKeyInfo key;

    do {
        key = Console.ReadKey(true);

        // Backspace Should Not Work
        if (!char.IsControl(key.KeyChar)) {
            pass.AppendChar(key.KeyChar);
            Console.Write("*");
        } else {
            if (key.Key == ConsoleKey.Backspace && pass.Length > 0) {
                pass.RemoveAt(pass.Length - 1);
                Console.Write("\b \b");
            }
        }
    }
    // Stops Receving Keys Once Enter is Pressed
    while (key.Key != ConsoleKey.Enter);
    return pass;
}

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);

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

 do {
  key = Console.ReadKey(true);

  if (key.Key != ConsoleKey.Backspace) {
   pass += key.KeyChar;
   Console.Write("*");
  } else {
   Console.Write("\b \b");
   char[] pas = pass.ToCharArray();
   string temp = "";
   for (int i = 0; i < pass.Length - 1; i++) {
    temp += pas[i];
   }
   pass = temp;
  }
 }
 // Stops Receving Keys Once Enter is Pressed
 while (key.Key != ConsoleKey.Enter);

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