LINQ

Populating data-rows into a collection list (Class)



    public class TaskStep
    {
        public int stepId {get; set;}
        public string stepName {get; set;}
        public string connectionString {get; set;}

    }

-------
                List<TaskStep> taskSteps = steps.Rows
                .Cast<DataRow>()
                .Select(row => new MyDomain.Client.Data.TaskStep
                {
                    stepId = (int)row[0],
                    stepName = (string)row[1],
                    connectionString = (string)row[2]

                })
                .ToList();

Tic Tac Toe

---------------------------------
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace MvcApplication3.Models
{
    public class TicTacToe
    {


        public char[] ticBoard;
        public int Player = 1; // player 1 is X; player 2
        public static int turns { get; set; }

        public TicTacToe()
        {
            ticBoard = new char[10];
            for (int iSquare = 1; iSquare <= 9; iSquare++)  //program wil ignor the 0 index
            {
                //Player = 2;
                ticBoard[iSquare] = '-'; //empty char
            }
        }

        public void makeATic()
        {
            //// for winning for testing
            //if (turns == 0)
            //{
            //    ticBoard[1] = 'O';
            //    ticBoard[2] = 'O';
            //    ticBoard[3] = 'O';
            //    ticBoard[4] = 'X';
            //    ticBoard[8] = 'X';
            //    ticBoard[9] = 'X';
            //    turns = 5;

            //}

            turns++;
            // bool validPos = false;
            Random _r = new Random();
            //int iPos = _r.Next(1, 10); // no ze index    
            List<char> listTicBoard = new List<char>();
            listTicBoard = ticBoard.ToList();
            int iSquare = listTicBoard.IndexOf('-');
            do  // (int iSquare = listTicBoard.IndexOf('-'); iSquare <= 9; iSquare++)  //program wil ignor the 0 index
            {

                if (ticBoard[iSquare] == '-')  // this square is yet to play
                {
                    //bool playThis = _r.Next(0, 1) == 0 ? false : true; // you wanna play this
                    if (((_r.Next(1, 100) % 2) == 1) || (turns == 9))  // if odd then play
                    {
                        ticBoard[iSquare] = Player == 1 ? 'X' : 'O'; //place the tick
                        Player = Player == 1 ? 2 : 1;   //switch the player
                        break;  //played
                    }
                }
                iSquare = iSquare < 9 ? iSquare + 1 : iSquare;
                iSquare = listTicBoard.IndexOf('-', iSquare);
            } while (iSquare != -1); // all being palyed      

        }

        public int doWeHaveAWinner()
        {
            if (hasAWinningCombination() == false && turns <= 9)
            {
                return 0;  //draw
            }
            else
                return Player == 1 ? 2 : 1;   //here is the winnder

        }

        public bool hasAWinningCombination()
        {
            if (turns <= 4) // cannot have a winner
                return false;

            List<string> winningCombination = new List<string>();
            winningCombination.Add("123");
            winningCombination.Add("456");
            winningCombination.Add("789");
            winningCombination.Add("147");
            winningCombination.Add("258");
            winningCombination.Add("369");
            winningCombination.Add("357");
            winningCombination.Add("159");


            for (int iCounter = 0; iCounter <= winningCombination.Count - 1; iCounter++)
            {
                bool hasAWinner = true;
                List<char> t = winningCombination[0].ToList();
                foreach (char pos in t)
                {

                    char PlayerChar = Player == 2 ? 'X' : 'O'; //player is switched at this point
                    if (ticBoard[Convert.ToInt16(pos.ToString())] != PlayerChar)
                    {
                        hasAWinner = false;  //not this combination                
                        break;
                    }
                }
                if (hasAWinner == true)
                    return true;
            }

            return false;
        }

    }

}

-----------------------------------
--Home Controller About Action Method
--------------------------------
        public ActionResult About()
        {
            TicTacToe ticboard = new TicTacToe();
            int hasAWinner = 0;
            TicTacToe.turns = 0;
            ViewBag.WinningPlayer = ", OOPS It's a draw";
            while (hasAWinner == 0 && TicTacToe.turns < 9)
            {
                ticboard.makeATic();
                if (TicTacToe.turns > 4) // cannot have a winner
                    hasAWinner = ticboard.doWeHaveAWinner();
                if (hasAWinner != 0)
                {
                    ViewBag.WinningPlayer = "Player " + hasAWinner;
                    break;
                }

            }

            var Lines = ticboard.ticBoard;

            foreach(char n in Lines)
            {
                break;
            }
       
            ViewBag.Line1 = ticboard.ticBoard[1].ToString() + ticboard.ticBoard[2].ToString() + ticboard.ticBoard[3].ToString();
            ViewBag.Line2 = ticboard.ticBoard[4].ToString() + ticboard.ticBoard[5].ToString() + ticboard.ticBoard[6].ToString();
            ViewBag.Line3 = ticboard.ticBoard[7].ToString() + ticboard.ticBoard[8].ToString() + ticboard.ticBoard[9].ToString();
 
            ViewBag.Message = "Play tic tac toe.";

            return View();
        }

-------------------------------------------

--About.chtml

------------------------------------------

@{

    ViewBag.Title = "Tic Tac Toe";

}

<hgroup class="title">

    <h1>@ViewBag.Title.</h1>

    <h2>@ViewBag.Message</h2>

</hgroup>

<article>

    <p> @ViewBag.Line1</p>

    <p> @ViewBag.Line2</p>

    <p> @ViewBag.Line3</p>

    <p><b>Winner is @ViewBag.WinningPlayer</b></p>

</article>

<aside>

    <h3>Aside Title</h3>

    <p>

        Use this area to provide additional information.

    </p>

    <ul>

        <li>@Html.ActionLink("Home", "Index", "Home")</li>

        <li>@Html.ActionLink("About", "About", "Home")</li>

        <li>@Html.ActionLink("Contact", "Contact", "Home")</li>

    </ul>

</aside>