C#

g_amol wrote:

excel open error "no overload for method Open takes 13 arguements"

George_George wrote:

But I am not sure whether I am correct.

delegate int Foo(string bar);

int Bar(string foo)
{
  return 0;
}

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int i = 0;
            i = i.ToMax(); //pointless example : i = int.MaxValue
            Console.Write(i);
            Console.Read();
        }
    }
    public static class Extensions
    {
        public static int ToMax(this int i)
        {
            i = int.MaxValue;
            return i;
        }
    }
}

The spec wrote:

An expression is classified as one of the following:
...
• A method group, which is a set of overloaded methods resulting from a member lookup (§7.3). A method group may have an associated instance expression and an associated type argument list. When an instance method is invoked, the result of evaluating the instance expression becomes the instance represented by this (§7.5.7). A method group is only permitted in an invocation-expression (§7.5.5) or a delegate-creation-expression (§7.5.10.3). In any other context, an expression classified as a method group causes a compile-time error.
...