private void loadSales() { DataTable data = getService.getSaleWithFilter("CONVERT(VARCHAR(10), transaction_date, 111) BETWEEN '" + range.from.Date.ToString("yyyy/MM/dd") + "' AND '" + range.to.Date.ToString("yyyy/MM/dd") + "'"); if (data.Rows.Count > 0) { salesGridView.DataSource = data; } }