protected void LogFileGridView_HtmlDataCellPrepared(object sender, ASPxGridViewTableDataCellEventArgs e) { { if (SessionWrapper.LoggedUser.Calendar_id != null) { if (SessionWrapper.LoggedUser.Calendar_id != 1)// if He select Hijri calender { if (e.DataColumn.FieldName != "Log_Date") { return; } else { DateTime date = DateTime.Parse(e.CellValue.ToString()); string Hijri_date = UC.ConvertDateCalendar(date, "Hijri", "ar-SA"); //new_date = UC.ConvertDateCalendar(date, "Gregorian", "en-US"); int index = Hijri_date.IndexOf(" "); if (index > 0) { Hijri_date = Hijri_date.Substring(0, index); } e.Cell.Text = Hijri_date + " " + date.ToShortTimeString(); } } } } }