public void GetDataFromAccessDb() { string sql = @"SELECT * FROM T_EmailInfo"; DataSet ds = _accessDBConnection.GetDataFromDb(sql); var dt = ds.Tables[0]; foreach (DataRow dtRow in dt.Rows) { string to = dtRow["To"].ToString(); string cc = dtRow["CC"].ToString(); string subject = dtRow["Subject"].ToString(); string body = dtRow["Body"].ToString(); insertIntoExcel(to, cc, subject, body); } _accessDBConnection.CloseDbConnection(); }