the purpose of the main method in c# code example

Example 1: c# main method

static void Main(string[] args)  
{  
//...  
}

Example 2: static void main(string args) c# meaning

class TestClass
{
    static void Main(string[] args)
    {
        // Display the number of command line arguments.
        Console.WriteLine(args.Length);
    }
}