DataTable - Remove the unwanted Cell space in C#

/// <summary>

        /// Remove the unwanted space in filtering dataTable

        /// </summary>

        /// <param name="datable"></param>

        private void ClearSpace(DataTable datable)

        {

            List<List<object>> listTemp = new List<List<object>>();

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

            {

                List<object> stack = new List<object>();

                for (int j = 0; j < datable.Rows.Count; j++)

                {

                    object obj = datable.Rows[j][i];

                    if (obj.ToString() != "")

                    {

                        stack.Add(obj);

                    }

                }

                listTemp.Add(stack);

            }

            datable.Clear();

            while (hasData(listTemp) == true)

            {

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

                {

                    DataRow dr = datable.NewRow();

                    for (int j = 0; j < listTemp.Count; j++)

                    {

                        if (listTemp[j].Count != 0)

                        {

                            dr[j] = listTemp[j][0];

                            listTemp[j].RemoveAt(0);

                        }

                    }

                    datable.Rows.Add(dr);

                }

            }

        }

        /// <summary>

        /// Delete the empty row from the table

        /// </summary>

        /// <param name="dt"></param>

        public static void RemoveNullColumnFromDataTable(DataTable dt)

        {

            for (int i = dt.Rows.Count - 1; i >= 0; i--)

            {

                if (dt.Rows[i][1] == DBNull.Value)

                    dt.Rows[i].Delete();

            }

            dt.AcceptChanges();

        }

        /// <summary>

        /// temp data

        /// </summary>

        /// <param name="listTemp"></param>

        /// <returns></returns>

        private bool hasData(List<List<object>> listTemp)

        {

            foreach (var item in listTemp)

            {

                if (item.Count != 0)

                {

                    return true;

                }

            }

            return false;

        }