MySqlDataReader dataReader1 = sqlCommand2.ExecuteReader();
MySqlDataReader dataReader2 = sqlCommand3.ExecuteReader();
如何保证这2句代码在同一方法下执行不会出异常。
dataReader1 和dataReader2访问的是同一张表。
MySqlDataReader dataReader2 = sqlCommand3.ExecuteReader();
如何保证这2句代码在同一方法下执行不会出异常。
dataReader1 和dataReader2访问的是同一张表。
MySqlCommand sqlCommand2 = new MySqlCommand();
sqlCommand2.CommandType = System.Data.CommandType.Text;
sqlCommand2.Connection = sqlConn2;
sqlCommand2.CommandText = "select * from " + mTableName;
MySqlDataReader dataReader1 = sqlCommand2.ExecuteReader(); MySqlConnection sqlConn3 = new MySqlConnection();
MySqlCommand sqlCommand3 = new MySqlCommand();
sqlCommand3.CommandType = System.Data.CommandType.Text;
sqlCommand3.Connection = sqlConn3;
sqlCommand3.CommandText = "select * from " + mTableName;
MySqlDataReader dataReader2 = sqlCommand3.ExecuteReader();