ArrayList to Variable Conversion in C#

Here are the following methods to get Year Number along with Week number from two date difference.

We are tried to use two ways to get the result using Array List and Generic List. I hope you will get some helpful information about ArrayList conversion (from arraylist to variable) and Generic List conversion.

Let me know your feedback and suggestions.

List<WeekYear> myWeek = new List<WeekYear>();     //declaration above page load

protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

                        //get year & week number using Array List

            ArrayList arryWeek = GetWeekNumberYearByArrayList();

            for (int i=0; i

            {

                 int weekNo = Convert.ToInt32(((string[])(arryWeek[i]))[0]);  //week no.

                int yearNo = Convert.ToInt32(((string[])(arryWeek[i]))[1]); //year no.

                Response.Write("Week " + weekNo + " Year " + yearNo + "
");

            }

                        //get year & week number using Generic List

            myWeek = GetWeekNumberYear();

            for (int i = 0; i < myWeek.Count; i++)

            {

                int weekNo = Convert.ToInt32(myWeek[i].wkNumber);

                int yearNo = Convert.ToInt32(myWeek[i].yrNumber);

                Response.Write("Week " + weekNo + "Year " + yearNo + "
");

            }

}

}

//using Array List

   protected ArrayList GetYearWeekByArrayList()

    {

        DateTime dt1 = new DateTime();

        DateTime dt2 = new DateTime();

        dt1 = Convert.ToDateTime("08/04/2012"); //Date format in dd/mm/yyyy

        dt2 = Convert.ToDateTime("08/04/2014"); //Date format in dd/mm/yyyy

        var result = new ArrayList();

        for (DateTime dtWeek = dt1; dtWeek <= dt2; dtWeek = dtWeek.AddDays(7))

        {

            String[] arr = new String[2];

            int WeekNo = (int)((dtWeek - new DateTime(dt1.Year, dt1.Month, 1)).TotalDays / 7);

            int yearNo = dtWeek.Year;

            arr[0] = WeekNo.ToString();

            arr[1] = yearNo.ToString();

            result.Add(arr);

        }

        return result;

    }

//using Generic List

    protected List<WeekYear> GetWeekNumberYear()

    {

        DateTime dt1 = new DateTime();

        DateTime dt2 = new DateTime();

        dt1 = Convert.ToDateTime("08/04/2012");

        dt2 = Convert.ToDateTime("08/04/2014");

        for (DateTime dtWeek = dt1; dtWeek <= dt2; dtWeek=dtWeek.AddDays(7))

        {

               int WeekNo = (int)((dtWeek - new DateTime(dt1.Year, dt1.Month, 1)).TotalDays/7);

            int yearNo = dtWeek.Year;

                    myWeek.Add(new WeekYear((int)WeekNo, (int)yearNo));

        }

        return myWeek;

    }

//Generic list class declaration

    public class WeekYear

    {

        public WeekYear(int weekNumber, int yearNumber)

        {

            this.wkNumber = weekNumber;

            this.yrNumber = yearNumber;

        }

        public int wkNumber;

        public int yrNumber;

    }

Thanks & Regards,

Ved Pathak