Load data and add new data loop through difference

Question

when insert data is finished into a table A and loop through table A to get the value compared with the data on the datagridview, which is table B. table B only retrieves 1 field of information and adds new as many new columns as you like. why when inserting is done, browse the data in table B in turn are the columns add new and then the remaining fields in table B. but the load event to get the data out again browses the fields in table B then the columns are add new as shown below when I debug 2 cases, add new data and load with the same code.

The data should also be browsed from columns1, column2... to Id, Status... to the end, but it's browsing from Id, status...

then column1,column2