using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SimpleDynamicVariables
{
    class Program
    {
        static void Main(string[] args)
        {
            DemoDeclaring();
            DemoAccessingMembers();
            DemoRunTimeExceptions();
            Console.ReadLine();
        }


        private static void DemoDeclaring()
        {
            Console.WriteLine("Declaring dynamic variables");
            Console.WriteLine("===========================");

            // Declare a dynamic variable and assign it a string initially.
            dynamic t = "Hello world!";
            Console.WriteLine("t is of type: {0}", t.GetType());

            // Now assign an int to the dynamic variable.
            t = 180;
            Console.WriteLine("t is of type: {0}", t.GetType());

            // Now assign a List<string> to the dynamic variable.
            t = new List<string>();
            Console.WriteLine("t is of type: {0}", t.GetType());
        }


        private static void DemoAccessingMembers()
        {
            Console.WriteLine("\nAccessing members on dynamic variables");
            Console.WriteLine("======================================");

            // Declare a dynamic variable and assign it a string initially.
            dynamic t = "Hello world!";
            t = t.ToUpper();
            Console.WriteLine("t is {0}", t);

            // Now assign an int to the dynamic variable.
            t = 180;
            t = t * 2;
            Console.WriteLine("t is {0}", t);

            // Now assign a List<string> to the dynamic variable.
            t = new List<string>();
            t.Add("Huey");
            t.Add("Lewey");
            t.Add("Dewey");
            Console.WriteLine("t has {0} items", t.Count);
        }


        private static void DemoRunTimeExceptions()
        {
            Console.WriteLine("\nRun time exceptions can occur...");
            Console.WriteLine("======================================");

            // Declare a dynamic variable and assign it a string initially.
            dynamic t = "Hello world!";     // It's a string :-)
            t = t.ToUpper();                // This will work fine.
            t.Add("Huey");                  // This will cause an exception.
            Console.WriteLine("t is {0}", t);
        }
    }
}