Expando Object sample code

ExpandoObjectSample.cs

using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DynamicObjectExample
{
    class Program
    {
        static void Main(string[] args)
        {
            dynamic d = CreateDynamicObject2();

            Console.WriteLine("Prop1: {0}", d.Prop1);
            Console.WriteLine("Prop2: {0}", d.Prop2);
            Console.WriteLine("Prop3: {0}", d.Prop3);

            d.InvokeVoid();
            var e = d.InvokeAdd(1, 2);

            Console.WriteLine("e={0}", e);

            Console.Read();
        }

        static dynamic CreateDynamicObject()
        {
            dynamic d = new ExpandoObject();

            // assign property
            d.Prop1 = 1;
            d.Prop2 = 2;
            d.Prop3 = 3;

            // assign void method.
            d.InvokeVoid = new Action(() => Console.WriteLine("InvokeVoid."));

            // assign returnable method.
            d.InvokeAdd = new Func<int, int, int>((a, b) => a + b);

            return d;
        }

        static dynamic CreateDynamicObject2()
        {
            dynamic d = new ExpandoObject();
            IDictionary<string, object> item = d as IDictionary<string, object>;

            // assign property
            item.Add("Prop1", 1);
            item.Add("Prop2", 2);
            item.Add("Prop3", 3);

            // assign void method.
            item.Add("InvokeVoid", new Action(() => Console.WriteLine("InvokeVoid.")));

            // assign returnable method.
            item.Add("InvokeAdd", new Func<int, int, int>((a, b) => a + b));

            return d;
        }
    }
}