Struct in .Net:-

1.) Struct are value types.
2.) Struct in .Net are sealed i.e. they cannot be inherited.
3.) The members of a Struct are by default private and not public.
4.) Struct can have Main method also just like a class.
5.) Struct can even have a constructor but Struct can only have parametrized constructors. In early days Struct had default constructors but they were re-moved due to some reasons known only to creators ?

  public struct MyStruct
    {
        int a;
        public int b;
        public MyStruct(int i, int j)
        {
            this.a = i;
            this.b = j;
        }
        public void foo()
        {
            Console.WriteLine("Hi");
        }
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new Form1());
        }
    }