C#

STATUS LNPUBLIC NSFItemAppend(
NOTEHANDLE note_handle,
WORD item_flags,
char far *item_name,
WORD name_len,
WORD item_type,
void far *item_value,
DWORD value_len);

using DWORD = UInt32;
using HANDLE = IntPtr;
using STATUS = UInt16;
using WORD = UInt16;
...
[DllImport("nnotes.dll")]
public static extern STATUS NSFItemAppend(HANDLE note_handle, WORD item_flags, String item_name, WORD name_len,WORD item_type, HANDLE item_value, DWORD value_len);

class Program {

public delegate void MyMulticast();

static void Main(string[] args)
{
    MyMulticast multi;
    Test t1 = new Test();
    MethodInfo[] methodList = t1.GetType().GetMethods();

    foreach (MethodInfo info in methodList)
    {
        foreach (object o in info.GetCustomAttributes(true))
        {
            if (o is MyAttribute)
            {
                //TODO This is where I need help
                multi += info ???
            }
}   }   }
}

class Test
{
    public Test() {}
    
    [MyAttribute()]
    public void ConformsToMyMulticast() {}
}

class Program
    {
        static List<IProduct> productList = new List<IProduct>();
        static void Main(string[] args)
        {
            Console.WriteLine("What product would you like to purchase");
            Console.WriteLine("1 Xbox");
            Console.WriteLine("2 Ps3");
            Console.Write("Number: ");
            char choice = Console.ReadLine()[0];
            Choice ch = Makedescision(choice);
            EvaluateDescision(ch);
            Console.ReadKey();
        }
        enum Choice { xbox = 1, ps3 = 2, nothing };

        static Choice Makedescision(char input)
        {
            if (input.Equals('1'))
            {
                return Choice.xbox;
            }
            else if (input.Equals('2'))
            {
                return Choice.ps3;
            }

            return Choice.nothing;

        }
        static void EvaluateDescision(Choice ch)
        {
            if (ch == Choice.xbox)
            {
                MakeNewXbox();
            }
            else if (ch == Choice.ps3)
            {
                MakeNewPs3();
            }
        }

        static void MakeNewXbox()
        {
            Xbox product = new Xbox();
            Console.WriteLine("Name your xbox");
            product.Name = Console.ReadLine();
            product.quantity = 2;
            product.Cost = 129.99m;
            productList.Add(product);
            ShowDetail(0);

        }
        static void MakeNewPs3()
        {
            Ps3 product = new Ps3();
            Console.WriteLine("Is new?");
            bool isNew = bool.Parse(Console.ReadLine());
            product.IsNew = isNew;
            product.Cost = 129.99m;
            productList.Add(product);
            ShowDetail(0);

        }

        static void ShowDetail(int i)
        {
            int quantity;
            bool detail;
            IProduct prod = (IProduct)productList[i];
            try
            {
                quantity = ((Xbox)(prod)).quantity;
                Console.WriteLine("quantity is " + quantity);
                
            }catch(Exception e)
            {
            }
            try
            {
                detail = ((Ps3)(prod)).IsNew;
                Console.WriteLine("is new? " + detail);
            }
            catch (Exception e)
            {
            }


        }
        
    }