public static bool OpenCSVFile(ref DataTable mycsvdt, string filepath)
        {
            string strpath = filepath;
            int intColCount = 0;
            bool blnFlag = true;

            DataColumn mydc;
            DataRow mydr;

            string strline;
            string[] aryline;
            System.IO.StreamReader mysr = new System.IO.StreamReader(strpath, System.Text.Encoding.Default);

            while ((strline = mysr.ReadLine()) != null)
            {
                aryline = strline.Split(new char[] { ',' });

                if (blnFlag)
                {
                    blnFlag = false;
                    intColCount = aryline.Length;
                    int col = 0;
                    for (int i = 0; i < aryline.Length; i++)
                    {
                        col = i + 1;
                        mydc = new DataColumn(aryline[i]);
                        mycsvdt.Columns.Add(mydc);
                    }
                }

                mydr = mycsvdt.NewRow();
                for (int i = 0; i < intColCount; i++)
                {
                    mydr[i] = aryline[i];
                }
                mycsvdt.Rows.Add(mydr);
            }
            return true;
        }
}