.net简单的三层实现功能(11)

303         /// </summary>
304         /// <param name="sqlCommand"></param>
305         /// <returns></returns>
306         public static DbDataReader GetReader(string sqlCommand)
307         {
308
309             try
310             {
311
312                 DbConnection connection = GetConnection();
313
314                 DbCommand command = GetCommand(sqlCommand, CommandType.Text, connection);
315
316                 connection.Open();
317
318                 DbDataReader reader = command.ExecuteReader(CommandBehavior.CloseConnection);
319
320                 command.Parameters.Clear();
321
322                 return reader;
323
324             }
325
326             catch (Exception ex)
327             {
328
329                 Console.Write("" + ex.Message);
330
331                 return null;
332
333             }
334
335         }
336
337         #endregion
338         /// <summary>
339         /// 执行有参数的sql语句,返回DbDataReader对象
340         /// </summary>
341         /// <param name="sqlCommand"></param>
342         /// <param name="parameters"></param>
343         /// <returns></returns>
344         public static DbDataReader GetReader(string sqlCommand, Dictionary<string, object> parameters)