What is “string[] args” in Main class for?

Question

In C# the Main class has string[] args parameter.

What is that for and where does it get used?

Answer 1

It's an array of the parameters/arguments (hence args) that you send to the program. For example ping 172.16.0.1 -t -4

These arguments are passed to the program as an array of strings.

string[] args // Array of Strings containing arguments.

Answer 2

Further to everyone else's answer, you should note that the parameters are optional in C# if your application does not use command line arguments.

This code is perfectly valid:

internal static Program
{
    private static void Main()
    {
        // Get on with it, without any arguments...
    }
}