Bonus Scores

/*
 * Write a program that applies bonus scores to given scores in the range [1..9]. The program reads a digit as an input. If the digit is between 1 and 3, the program multiplies it by 10; if it is between 4 and 6, multiplies it by 100; if it is between 7 and 9, multiplies it by 1000. If it is zero or if the value is not a digit, the program must report an error.
        Use a switch statement and at the end print the calculated new value in the console.
*/

using System;

class BonusScores
{
    static void Main()
    {
        byte digit;
        int result = 0;

        digit = InputData();

        switch (digit)
        {
            case 1:
            case 2:
            case 3:
                {
                    result = digit * 10;
                    break;
                }
            case 4:
            case 5:
            case 6:
                {
                    result = digit * 100;
                    break;
                }
            case 7:
            case 8:
            case 9:
                {
                    result = digit * 1000;
                    break;
                }
            default:
                {
                    Console.WriteLine("Error! Please enter a value between 1 and 9" + Environment.NewLine);
                    break;
                }
        }
        if (result != 0)
        {
            OutputData(result);
        }
        Main();
    }

    static byte InputData()
    {
        byte digit;
        string invalidInput = "Please enter a value between 1 and 9" + Environment.NewLine;
        Console.WriteLine("Enter a digit : ");
        while (!(byte.TryParse(Console.ReadLine(), out digit) && digit >=0 && digit <= 9))
        {
            Console.WriteLine(invalidInput);
            Console.WriteLine("Enter a digit: ");
        }
        return digit;
    }

    static void OutputData(int result)
    {
        Console.WriteLine("Result: {0}" + Environment.NewLine, result);
    }
}