An introduction to Tuple

using System;
using System.Reflection;
using System.Linq;

namespace CSharpDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            int number = 5;

            #region Multiplication Table without REFLECTION 
            var tuple = MultiplicationTable(number);

            string format1 =
               "Multiplcation Table of {0} is" + Environment.NewLine +
               "------------------------------" + Environment.NewLine + Environment.NewLine +
               "{0} * 1     = {1} " + Environment.NewLine +
               "{0} * 2     = {2} " + Environment.NewLine +
               "{0} * 3     = {3} " + Environment.NewLine +
               "{0} * 4     = {4} " + Environment.NewLine +
               "{0} * 5     = {5} " + Environment.NewLine +
               "{0} * 6     = {6} " + Environment.NewLine +
               "{0} * 7     = {7} " + Environment.NewLine +
               "{0} * 8     = {8} " + Environment.NewLine +
               "{0} * 9     = {9} " + Environment.NewLine +
               "{0} * 10    = {10} " + Environment.NewLine;

            string result = string.Format(
                format1
                , number
                , tuple.Item1
                , tuple.Item2
                , tuple.Item3
                , tuple.Item4
                , tuple.Item5
                , tuple.Item6
                , tuple.Item7
                , tuple.Rest.Item1
                , tuple.Rest.Item2
                , tuple.Rest.Item3

                );
            Console.WriteLine(result);

            #endregion

            #region Multiplication table using REFLECTION

            string format2 =
               "Multiplcation Table of {0} is" + Environment.NewLine +
               "------------------------------" + Environment.NewLine ;
            Console.WriteLine(format2, number);
            string[] multipliers = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" };
            
            Type t = typeof(CSharpDemo.Program);
            
            t.InvokeMember(
            "MultiplicationTable"
            , BindingFlags.InvokeMethod
            , null
            , Activator.CreateInstance(t)
            , new object[] { number })
            .ToString()
            .Replace("(", string.Empty)
            .Replace(")", string.Empty)
            .Split(',')
            .Zip(multipliers,(first, second) => number.ToString() + "*" + second + "=" + first)
            .ToList().ForEach(i => Console.WriteLine(i));

            #endregion

            #region TupleExtension To get the Tuple length and Item Values
            Tuple<int,object> testTuple = new Tuple<int,object> (0,null);
            var resultantTuple = testTuple.GetLengthAndMemeberValues("MultiplicationTable", new object[] { number });
            Console.WriteLine(Environment.NewLine);
            Console.WriteLine("Number of TupleItems" + resultantTuple.Item1);
            Console.WriteLine("Items of Tuple" + resultantTuple.Item2);
            #endregion

            Console.ReadKey(true);
        }

        /// <summary>
        /// MultiplicationTable
        /// </summary>
        /// <returns></returns>
        public static Tuple<int,int,int,int,int,int,int,Tuple<int, int, int>> 
            MultiplicationTable(int number)
        {
           Tuple<int, int, int, int, int, int, int, Tuple<int, int,int>> multiplicationTable =
                new Tuple<int, int, int, int, int, int, int, Tuple<int, int,int>>
                (
                 number * 1
                , number * 2
                , number * 3
                , number * 4
                , number * 5
                , number * 6
                , number * 7
                , new Tuple<int, int, int>(number * 8, number * 9, number * 10));
           return multiplicationTable;
        }
    }
}