How do I call Main from another class?

Question

So I am making a C# Console Program that is a simple calculator, I am just learning C#.

Here is where I want to call main:

if (info.Key == ConsoleKey.Escape)
{
    Environment.Exit(0);
}
else
{
}

I want to call main for the Addition, Subtraction, Multiplication and Division classes so it goes back to the start to where it asks 'Press 'A' for Addition' etc.

I tried putting "Main();" in else but it gives me and error saying "There is no argument given that corresponds to the required formal parameter 'args' of 'Program.Main(String[])"

How could I go about calling main in this class so it goes to the start of main?

Why do you want to call Main? Have main call another function to start your app. You can then call that function instead of Main. — Steve, Oct 11 '15 at 11:52
Possible duplicate of [Calling Main( ) from another class](http://stackoverflow.com/questions/6723558/calling-main-from-another-class) — Reuben Mallaby, Oct 11 '15 at 11:52

score 6 · Answer 1 · edited Dec 18 '18 at 13:51

You wouldn't call Main yourself it's used as an entry-point into the application. Usually you'd call out to the other methods, for example:

static void Main(string[] args)
{
   while (true) 
   {
        Console.Write("> ");
        string command = Console.ReadLine().ToLower();

        if (command == "add")
        {
            Add(); // Call our Add method
        }
        else if (command == "subtract")
        {
            Subtract(); // Call our Subtract method
        }
        else if (command == "multiply")
        {
            Multiple(); // Call our Multiply method
        }
        else if (command == "exit")
        {
            break; // Break the loop
        }
   }
}

static void Add()
{
    // to-be-implemented
}

static void Subtract()
{
    // to-be-implemented
}

static void Multiply()
{
    // to-be-implemented
}

Another thing to note here is it's Main(string[] args), the args parameter contains an array of arguments passed on the command line to the console application.

If you were to call Main yourself you would need to pass a value to this, for example:

Main(null); // No array
Main(new string[0]); // An empty array
Main(new string[] {}); // Another empty array
Main(new string[] { "Something" }); // An array with a single entry

Whilst this works, I think it would be much better to have a method along the lines of `GetCommand` rather than placing the logic in `Main` — Steve, Oct 11 '15 at 11:57

How do I call Main from another class?

1 Answers1