C# Console.Readkey - wait for specific input

Question

I have a small C# console app I am writing.

I would like the app to wait for instruction from the user regarding either a Y or a N keypress (if any other key is pressed the app ignores this and waits for either a Y or a N and then runs code dependent on the Y or N answer.

I came up with this idea,

while (true)
{
    ConsoleKeyInfo result = Console.ReadKey();
    if ((result.KeyChar == "Y") || (result.KeyChar == "y"))
    {
         Console.WriteLine("I'll now do stuff.");
         break;
    }
    else if ((result.KeyChar == "N") || (result.KeyChar == "n"))
    {
        Console.WriteLine("I wont do anything");
        break;
    }
}

Sadly though VS says its doesnt like the result.Keychat == as the operand cant be applied to a 'char' or 'string'

Any help please?

Thanks in advance.

Solution 1

KeyChar is a char while "Y" is a string.

You want something like KeyChar == 'Y' instead.

Solution 2

Check this instead

string result = Console.ReadLine();

And after check the result

Solution 3

What you're looking for is something like this:

void PlayAgain()
{
    Console.WriteLine("Would you like to play again? Y/N: ");
    string result = Console.ReadLine();
    if (result.Equals("y", StringComparison.OrdinalIgnoreCase) || result.Equals("yes", StringComparison.OrdinalIgnoreCase))
    {
        Start();
    }
    else
    {
        Console.WriteLine("Thank you for playing.");
        Console.ReadKey();
    }
}

Comments

[tripbrock]

Thank you so much. A schoolboy error on my part. Still struggling with C# after the php move! Thanks again.

[Carol]

An alternative would be this: result.Key == ConsoleKey.Y

[Gabe]

@K_Rol: That might work. I'd be concerned that it would accept not just Y and Shift+Y, but also Ctrl+Y.

[Carol]

You are right, I just tested it and it does accept Shift+Y (or any combination).