private void btnSetToday_Click(object sender, EventArgs e) { DateTime startDate = new DateTime(dtpStart.Value.Year, dtpStart.Value.Month, dtpStart.Value.Day, 0, 0, 0); DateTime dtTemp = dtpEnd.Value.AddDays(1); DateTime endDate = new DateTime(dtTemp.Year, dtTemp.Month, dtTemp.Day, 0, 0, 0); endDate = endDate.AddSeconds(-1); List<ItemVoid> aOrderVoids = new List<ItemVoid>(); OrderVoidDAO aOrderVoidDao = new OrderVoidDAO(); aOrderVoids = aOrderVoidDao.GetAllItemVoid(startDate, endDate); itemVoiddataGridView.DataSource = aOrderVoids; }