How do I create a terminable while loop in console application?

Question

I am currently looking for a solution for this c# console application function

I tried searching for a method for creating a while loop that can terminate for the co

Answer 1

One option can be to create method and keep calling until valid input comes:

public static void ProcessInput(string input)
{
    int choice = Convert.ToInt32(input);
    switch (choice)
    {
        case 1:
            Console.WriteLine("");
            Console.WriteLine("You have chosen Defult Empire 1");
            break;
        case 2:
            Console.WriteLine("");
            Console.WriteLine("You have chosen Defult Empire 2");
            break;
        case 3:
            Console.WriteLine("");
            Console.WriteLine("You have chosen Defult Empire 3");
            break;
        case 4:
            Console.WriteLine("");
            Console.WriteLine("You have chosen Defult Empire 4");
            break;
        default:
            Console.WriteLine("");
            Console.WriteLine("Input Invalid, Please press the number from the corresponding choices to try again");
            ProcessInput(Console.ReadLine());
            break;
    }

and in your main program:

public static void Main()
{
    Console.WriteLine("Hello World");
    ProcessInput(Console.ReadKey());
}