(C#) ASP.Net Excel & EPPlus Generate Excel Report from Database

            string strConnString = @"Server=localhost;UID=sa;PASSWORD=;database=mydatabase";
            var objConn = new SqlConnection(strConnString);
            var dtAdapter = new SqlDataAdapter();
            var dt = new DataTable();
            objConn.Open();

            string strSQL = "SELECT * FROM myTable";
            dtAdapter = new SqlDataAdapter(strSQL, objConn);
            dtAdapter.Fill(dt);

            FileInfo template = new FileInfo(Server.MapPath(@"Xls/Template.xlsx"));
            using (var package = new ExcelPackage(template))
            {
                var workbook = package.Workbook;

                //*** Sheet 1
                var worksheet = workbook.Worksheets.First();
                int startRows = 3;
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    worksheet.Cells["A" + (i + startRows)].Value = dt.Rows[i]["Column1"].ToString();
                    worksheet.Cells["B" + (i + startRows)].Value = dt.Rows[i]["Column2"].ToString();
                    worksheet.Cells["C" + (i + startRows)].Value = dt.Rows[i]["Column3"].ToString();
                    worksheet.Cells["D" + (i + startRows)].Value = dt.Rows[i]["Column4"].ToString();
                    worksheet.Cells["E" + (i + startRows)].Value = dt.Rows[i]["Column5"].ToString();
                }

                package.SaveAs(new FileInfo(Server.MapPath(@"Xls/myExcel.xlsx")));
            }

            dtAdapter = null;
            objConn.Close();