Using Readline() and ReadKey() Simultaneously

Question

Is there any way to detect both Readline and ReadKey, so that in most cases it behaves as a readline, except for some special key inputs that should be detected?

I need some "parallel" implementation to introduce simultaneity. The code below is synchronous and does not meet my need

while ((line = Console.ReadLine()) != "x")
{    
    if (line == "BLABLA")
    {
        //Stuff
    }

    else
    {
        //Stuff
    }

    ConsoleKeyInfo ki = Console.ReadKey(true);
    if ((ki.Key == ConsoleKey.V) && (ki.Modifiers == ConsoleModifiers.Control))
    {
        //Stuff
    }
}

Answer 1

Here's a function I just made to do this.

Right now it only handles Backspace, Enter and Esc, but it could easily be modified to handle other keys if you deem them necessary.

    // returns null if user pressed Escape, or the contents of the line if they pressed Enter.
    private static string ReadLineOrEsc()
    {
        string retString = "";

        int curIndex = 0;
        do
        {
            ConsoleKeyInfo readKeyResult = Console.ReadKey(true);

            // handle Esc
            if (readKeyResult.Key == ConsoleKey.Escape)
            {
                Console.WriteLine();
                return null;
            }

            // handle Enter
            if (readKeyResult.Key == ConsoleKey.Enter)
            {
                Console.WriteLine();
                return retString;
            }

            // handle backspace
            if (readKeyResult.Key == ConsoleKey.Backspace)
            {
                if (curIndex > 0)
                {
                    retString = retString.Remove(retString.Length - 1);
                    Console.Write(readKeyResult.KeyChar);
                    Console.Write(' ');
                    Console.Write(readKeyResult.KeyChar);
                    curIndex--;
                }
            }
            else
            // handle all other keypresses
            {
                retString += readKeyResult.KeyChar;
                Console.Write(readKeyResult.KeyChar);
                curIndex++;
            }
        }
        while (true);
    }